content: SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
  
  
                                   FORM 8-K
  
  
                                CURRENT REPORT
                Pursuant to Section 13 or 15(d) of the Securities
                             Exchange Act of 1934
  
  
     Date of Report (Date of earliest event reported): April 18, 2005
  
  
                              SONEX RESEARCH, INC.
                (Exact name of registrant as specified in Charter)
  
  
           Maryland                  000-14465              52-1188993
        (State or other           (Commision file         (IRS employer
        jurisdiction of               number)           identification no.)
         incorporation)
  
  
                       23 Hudson Street, Annapolis, MD 21401
                      (Address of principal executive offices)
  
  
                                (410) 266-5556
               (Registrant's telephone number, including area code)
  
  
                                      N/A
           (Former name or former address, if changed since last report)
  
  
  
  Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
  simultaneously  satisfy the filing obligation of the registrant under any of the
  following   provisions  (see  General  Instruction  A.2.  below):
  
  [ ]  Written communications  pursuant to Rule 425 under the Securities Act
       (17 CFR 230.425)
  [ ]  Soliciting  material  pursuant to Rule 14a-12  under the Exchange Act
       (17 CFR 240.14a-12)
  [ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
       Exchange  Act (17 CFR  240.14d-2(b))
  [ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
       Exchange Act (17 CFR 240.13e-4(c))
  
  
  
  
  
  
  ITEM 8.01 - OTHER EVENTS
  On April 18, 2005, the Registrant  posted  the  following  announcement  on its
  website (www.sonexresearch.com):
  
  
                       LOCAL SONEX SHAREHOLDERS FILE LAWSUIT;
                         COMPANY CALLS IT A MISUNDERSTANDING
  
  
  ANNAPOLIS,  MARYLAND,  April 18, 2005 - SONEX  RESEARCH,  INC. (OTC BB: SONX), a
  leader in the field of combustion technology,  announced that it was served last
  week with a lawsuit filed by three Maryland shareholders alleging the fraudulent
  transfer of ownership of the Company's patents to its officers. Sonex vehemently
  denies  the  allegations,  and  asserts  instead  that these  shareholders  have
  misunderstood  the facts  concerning  recent actions taken by management to keep
  Sonex in  operation  during a period  of cash  flow  difficulties,  and that the
  Company maintains title to its patents.
  
  Plaintiffs Robert T. Emmet of Annapolis,  Sidney L. Gulick, III of Adelphi,  and
  Robert  Martin,  Jr. of  Myersville,  filed a Complaint in the Circuit Court for
  Anne Arundel County against Sonex, Dr. Andrew A. Pouring, Chairman of the Board,
  CEO and President,  and George E.  Ponticas,  CFO,  Secretary and director.  The
  Plaintiffs seek a $1 million  judgment in their favor for alleged  violations of
  Maryland law regarding  actions by directors who have a financial  interest in a
  particular  transaction or contract  approved by the Board.  Dr. Pouring and Mr.
  Ponticas  currently  are the only officers and members of the Board of Directors
  of Sonex, as a vacancy in the Board has existed since November 2004.
  
  Sonex notes that the lawsuit seeks damages only for the three shareholders,  not
  for the benefit of any other shareholder or creditor.
  
  At issue is the grant by the  Company of a security  interest  in its patents to
  Dr. Pouring,  Mr. Ponticas,  and Michael I. Keller, the consultant who serves as
  the Company's  Director of Business  Development and technical  program manager,
  disclosed  by Sonex in a Form 8-K filed with the SEC in March 2005.  The Company
  continues to  experience  cash flow problems and has been unable for an extended
  period of time to keep  current with its  compensation  payments to its officers
  and Mr. Keller. Steps were needed to insure that key personnel would continue to
  provide  services  and make loans to Sonex in order for the Company to remain in
  operation.  Thus,  the Board of Directors  took this action to secure payment of
  compensation  being  deferred on an ongoing and future basis,  new loans made to
  the Company,  and  additional  personal  financial  guaranties by Dr. Pouring of
  Company  credit  card  obligations.
  
  Dr.  Pouring  states  "We have acted for the  mutual  benefit of the Sonex,  its
  creditors, its shareholders, and ourselves, to keep the Company in operation. We
  intend  to see that  Sonex  fulfills  its  obligations  under  current  military
  contracts,  and are  doing  everything  we can to take  advantage  of  potential
  business  opportunities and generate  additional  revenues to create shareholder
  value and  satisfy  outside  creditors.  I regret  that our fellow  shareholders
  thought it necessary to take legal action  rather than permit us to address what
  appears to be a  misunderstanding,  and I hope we will be able to  resolve  this
  matter  without damage to the Company." A response to the Complaint is currently
  due by May 13, 2005.
  
  Sonex reports that from January through March 2005, the first security  interest
  in  the  patents  applies  to  total   accumulated   financial   obligations  of
  approximately $157,000, consisting of loans received of $37,000 from Mr. Keller,
  $5,000 from Dr. Pouring,  and $5,000 from Mr. Ponticas,  unpaid  compensation of
  approximately  $92,000,  and new  personal  guaranties  of Company  credit  card
  obligations of approximately $18,000.
  
  
  About Sonex
  
  Sonex  Research,  Inc.,  a leader  in the  field of  combustion  technology,  is
  developing its patented Sonex Combustion  System (SCS)  piston-based  technology
  for in-cylinder  control of ignition and  combustion,  designed to increase fuel
  mileage and reduce  emissions  of internal  combustion  engines.  Sonex plans to
  complete  development,  commercialize  and  market  its  Sonex  Controlled  Auto
  Ignition (SCAI)  combustion  process to the automotive  industry to improve fuel
  efficiency of gasoline powered vehicles.  Additionally,  independent third-party
  testing has confirmed the potential of the SCS application  for  direct-injected
  diesel  engines  to  significantly   reduce  harmful  soot  in-cylinder  without
  increasing  fuel  consumption.  Other  SCS  designs  are being  used to  convert
  gasoline engines of various sizes to operate on safer, diesel-type "heavy fuels"
  for use in military and commercial  applications requiring light weight and safe
  handling and storage of fuel, such as in UAVs (unmanned aerial vehicles).
  
  
  Caution Regarding Forward-Looking Statements
  
  "Forward-looking"  statements  contained  in this  announcement,  as well as all
  publicly disseminated material about the Company, are made pursuant to the "safe
  harbor" provisions of the Private Securities Litigation Act. Such statements are
  based  on  current  expectations,  estimates,  projections  and  assumptions  by
  management  with respect to matters  such as  commercial  acceptance  of the SCS
  technology, the impact of competition,  and the Company's financial condition or
  results of  operations.  Readers  are  cautioned  that such  statements  are not
  guarantees of future  performance and involve risks and uncertainties that could
  cause  actual  results to differ  materially  from those  expressed  in any such
  forward-looking statements.  Additional information regarding the risks faced by
  Sonex is provided in the  Company's  periodic  filings with the  Securities  and
  Exchange Commission under the heading "Risk Factors". Such filings are available
  upon request from the Company or online in the EDGAR database at www.sec.gov.
  
  
  SIGNATURES
  
  Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
  registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
  undersigned hereunto duly authorized.
  
  
  April 18, 2005
  
  SONEX RESEARCH, INC.
  Registrant
  
  
  /s/ George E. Ponticas
  ----------------------
  George E. Ponticas
  Chief Financial Officer and Secretary
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metadata_filer: {"company-data": {"conformed-name": "SONEX RESEARCH INC", "cik": "0000723312", "assigned-sic": "8731", "irs-number": "521188993", "state-of-incorporation": "MD", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-14465", "film-number": "05756480"}, "business-address": {"street1": "23 HUDSON ST", "city": "ANNAPOLIS", "state": "MD", "zip": "21401", "phone": "4102665556"}, "mail-address": {"street1": "23 HUDSON STREET", "city": "ANNAPOLIS", "state": "MD", "zip": "21401"}}
text: SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
  
                                   FORM 8-K
  
                                CURRENT REPORT
                Pursuant to Section 13 or 15(d) of the Securities
                             Exchange Act of 1934
  
     Date of Report (Date of earliest event reported): April 18, 2005
  
                              SONEX RESEARCH, INC.
                (Exact name of registrant as specified in Charter)
  
           Maryland                  000-14465              52-1188993
        (State or other           (Commision file         (IRS employer
        jurisdiction of               number)           identification no.)
         incorporation)
  
                       23 Hudson Street, Annapolis, MD 21401
                      (Address of principal executive offices)
  
                                (410) 266-5556
               (Registrant's telephone number, including area code)
  
                                      N/A
           (Former name or former address, if changed since last report)
  
  Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
  simultaneously  satisfy the filing obligation of the registrant under any of the
  following   provisions  (see  General  Instruction  A.2.  below):
  
  [ ]  Written communications  pursuant to Rule 425 under the Securities Act
       (17 CFR 230.425)
  [ ]  Soliciting  material  pursuant to Rule 14a-12  under the Exchange Act
       (17 CFR 240.14a-12)
  [ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
       Exchange  Act (17 CFR  240.14d-2(b))
  [ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
       Exchange Act (17 CFR 240.13e-4(c))
  
  ITEM 8.01 - OTHER EVENTS
  On April 18, 2005, the Registrant  posted  the  following  announcement  on its
  website (www.sonexresearch.com):
  
                       LOCAL SONEX SHAREHOLDERS FILE LAWSUIT;
                         COMPANY CALLS IT A MISUNDERSTANDING
  
  ANNAPOLIS,  MARYLAND,  April 18, 2005 - SONEX  RESEARCH,  INC. (OTC BB: SONX), a
  leader in the field of combustion technology,  announced that it was served last
  week with a lawsuit filed by three Maryland shareholders alleging the fraudulent
  transfer of ownership of the Company's patents to its officers. Sonex vehemently
  denies  the  allegations,  and  asserts  instead  that these  shareholders  have
  misunderstood  the facts  concerning  recent actions taken by management to keep
  Sonex in  operation  during a period  of cash  flow  difficulties,  and that the
  Company maintains title to its patents.
  
  Plaintiffs Robert T. Emmet of Annapolis,  Sidney L. Gulick, III of Adelphi,  and
  Robert  Martin,  Jr. of  Myersville,  filed a Complaint in the Circuit Court for
  Anne Arundel County against Sonex, Dr. Andrew A. Pouring, Chairman of the Board,
  CEO and President,  and George E.  Ponticas,  CFO,  Secretary and director.  The
  Plaintiffs seek a $1 million  judgment in their favor for alleged  violations of
  Maryland law regarding  actions by directors who have a financial  interest in a
  particular  transaction or contract  approved by the Board.  Dr. Pouring and Mr.
  Ponticas  currently  are the only officers and members of the Board of Directors
  of Sonex, as a vacancy in the Board has existed since November 2004.
  
  Sonex notes that the lawsuit seeks damages only for the three shareholders,  not
  for the benefit of any other shareholder or creditor.
  
  At issue is the grant by the  Company of a security  interest  in its patents to
  Dr. Pouring,  Mr. Ponticas,  and Michael I. Keller, the consultant who serves as
  the Company's  Director of Business  Development and technical  program manager,
  disclosed  by Sonex in a Form 8-K filed with the SEC in March 2005.  The Company
  continues to  experience  cash flow problems and has been unable for an extended
  period of time to keep  current with its  compensation  payments to its officers
  and Mr. Keller. Steps were needed to insure that key personnel would continue to
  provide  services  and make loans to Sonex in order for the Company to remain in
  operation.  Thus,  the Board of Directors  took this action to secure payment of
  compensation  being  deferred on an ongoing and future basis,  new loans made to
  the Company,  and  additional  personal  financial  guaranties by Dr. Pouring of
  Company  credit  card  obligations.
  
  Dr.  Pouring  states  "We have acted for the  mutual  benefit of the Sonex,  its
  creditors, its shareholders, and ourselves, to keep the Company in operation. We
  intend  to see that  Sonex  fulfills  its  obligations  under  current  military
  contracts,  and are  doing  everything  we can to take  advantage  of  potential
  business  opportunities and generate  additional  revenues to create shareholder
  value and  satisfy  outside  creditors.  I regret  that our fellow  shareholders
  thought it necessary to take legal action  rather than permit us to address what
  appears to be a  misunderstanding,  and I hope we will be able to  resolve  this
  matter  without damage to the Company." A response to the Complaint is currently
  due by May 13, 2005.
  
  Sonex reports that from January through March 2005, the first security  interest
  in  the  patents  applies  to  total   accumulated   financial   obligations  of
  approximately $157,000, consisting of loans received of $37,000 from Mr. Keller,
  $5,000 from Dr. Pouring,  and $5,000 from Mr. Ponticas,  unpaid  compensation of
  approximately  $92,000,  and new  personal  guaranties  of Company  credit  card
  obligations of approximately $18,000.
  
  About Sonex
  
  Sonex  Research,  Inc.,  a leader  in the  field of  combustion  technology,  is
  developing its patented Sonex Combustion  System (SCS)  piston-based  technology
  for in-cylinder  control of ignition and  combustion,  designed to increase fuel
  mileage and reduce  emissions  of internal  combustion  engines.  Sonex plans to
  complete  development,  commercialize  and  market  its  Sonex  Controlled  Auto
  Ignition (SCAI)  combustion  process to the automotive  industry to improve fuel
  efficiency of gasoline powered vehicles.  Additionally,  independent third-party
  testing has confirmed the potential of the SCS application  for  direct-injected
  diesel  engines  to  significantly   reduce  harmful  soot  in-cylinder  without
  increasing  fuel  consumption.  Other  SCS  designs  are being  used to  convert
  gasoline engines of various sizes to operate on safer, diesel-type "heavy fuels"
  for use in military and commercial  applications requiring light weight and safe
  handling and storage of fuel, such as in UAVs (unmanned aerial vehicles).
  
  Caution Regarding Forward-Looking Statements
  
  "Forward-looking"  statements  contained  in this  announcement,  as well as all
  publicly disseminated material about the Company, are made pursuant to the "safe
  harbor" provisions of the Private Securities Litigation Act. Such statements are
  based  on  current  expectations,  estimates,  projections  and  assumptions  by
  management  with respect to matters  such as  commercial  acceptance  of the SCS
  technology, the impact of competition,  and the Company's financial condition or
  results of  operations.  Readers  are  cautioned  that such  statements  are not
  guarantees of future  performance and involve risks and uncertainties that could
  cause  actual  results to differ  materially  from those  expressed  in any such
  forward-looking statements.  Additional information regarding the risks faced by
  Sonex is provided in the  Company's  periodic  filings with the  Securities  and
  Exchange Commission under the heading "Risk Factors". Such filings are available
  upon request from the Company or online in the EDGAR database at www.sec.gov.
  
  SIGNATURES
  
  Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
  registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
  undersigned hereunto duly authorized.
  
  April 18, 2005
  
  SONEX RESEARCH, INC.
  Registrant
  
  /s/ George E. Ponticas
  ----------------------
  George E. Ponticas
  Chief Financial Officer and Secretary