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 7, 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 7, 2005,  the  Registrant  posted  the  following  announcement  on its
  website (www.sonexresearch.com):
  
  
  
                        SONEX WON'T FILE FORM 10-KSB ON TIME,
                             BUT CEO REMAINS OPTIMISTIC
  
  
  ANNAPOLIS,  MARYLAND,  April 7, 2005 - SONEX  RESEARCH,  INC. (OTC BB: SONX),  a
  leader in the field of combustion  technology,  last week filed for an automatic
  extension of time to submit its Annual  Report on Form 10-KSB for the year ended
  December 31, 2004.  The date for filing the Form 10-KSB with the  Securities and
  Exchange Commission (SEC), originally March 31, 2005, is now April 15, 2005, but
  the Company now reports  that it will not make the filing by this  extended  due
  date.
  
  In  addition,  Dr.  Andrew A.  Pouring,  Sonex  Chairman  of the Board,  CEO and
  President,  reports that the Company has substantially  completed work under its
  ongoing  agreement with the Defense Advanced Research Projects Agency (DARPA) on
  a  project  to  develop a "heavy  fuel"  engine  (HFE)  combustion  process  for
  potential  Department  of Defense  (DoD)  applications  such as unmanned  aerial
  vehicles  (UAVs).  He explained  that Sonex has  demonstrated  the potential for
  lightweight,  multi-cylinder  engines running on JP-5,  military  kerosene-based
  heavy fuel by application of a Sonex Combustion System (SCS) unthrottled, direct
  fuel injection  combustion  process based on the Sonex Controlled  Auto-Ignition
  (SCAI)  technology.  The SCAI process is enabled by a  proprietary  Sonex piston
  technology that achieves in-cylinder chemical kinetics at a moderate compression
  ratio for auto ignition of the JP-5 to achieve engine stability and control, and
  fuel consumption substantially lower than a gasoline baseline engine.
  
  Dr.  Pouring  suggested  that outcomes from the DARPA program could validate the
  sparkless  SCAI process for  in-cylinder  control of ignition and combustion for
  potential  application  to gasoline  powered  automobiles to achieve better fuel
  economy.  He added that the Company  hopes to be in a position to announce  more
  specific project results in the near future following acceptance by DARPA of the
  Company's project report.
  
  In its SEC filing  for the  extension  of time to submit  the 2004 Form  10-KSB,
  Sonex  explained  that it did not  have  the  funds to  engage  its  independent
  accountants to conduct the audit of the December 31, 2004 financial  statements,
  and  that its  limited  staff  did not  have  time to  prepare  the Form  10-KSB
  document.  The Company had also  cautioned that it might not be in a position to
  file the Form 10-KSB by the extended due date, but it now indicates that it will
  not make the filing by April 15, 2005.
  
  Sonex CFO,  Secretary and board member George E. Ponticas  reports that the time
  spent this year by Dr. Pouring and he dealing with an investor lawsuit,  and the
  legal fees required, were among the factors resulting in the Company's inability
  to prepare  and file the Form  10-KSB.  He added  that  failure to file the Form
  10-KSB  by the  extended  due  date may have  significant  implications  for the
  Company until the filing is made, including the inability to register stock with
  the SEC and inability for shareholders to sell restricted stock.  Sonex will use
  its best efforts to file the report as soon as resources permit.
  
  While the Company  continues  to  experience  cash flow  problems,  Dr.  Pouring
  expressed optimism that revenue from the DARPA agreement,  the modest amounts of
  revenue  being  earned  from  work on  HFEs  for  small  UAV  applications,  and
  additional  short-term  loans from  shareholders  will provide Sonex the time to
  secure needed additional capital and/or revenue, and hire sufficient experienced
  personnel,  to take advantage of a number of potential  business  opportunities.
  There is no assurance,  however,  that the Company will be able to achieve these
  objectives.  The Company's  history of operating losses,  significant  financial
  liabilities,  and other risk factors mean that there still  remains  substantial
  doubt about the Company's ability to continue as a going concern.
  
  
  
  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 7, 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": "05739125"}, "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 7, 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 7, 2005,  the  Registrant  posted  the  following  announcement  on its
  website (www.sonexresearch.com):
  
                        SONEX WON'T FILE FORM 10-KSB ON TIME,
                             BUT CEO REMAINS OPTIMISTIC
  
  ANNAPOLIS,  MARYLAND,  April 7, 2005 - SONEX  RESEARCH,  INC. (OTC BB: SONX),  a
  leader in the field of combustion  technology,  last week filed for an automatic
  extension of time to submit its Annual  Report on Form 10-KSB for the year ended
  December 31, 2004.  The date for filing the Form 10-KSB with the  Securities and
  Exchange Commission (SEC), originally March 31, 2005, is now April 15, 2005, but
  the Company now reports  that it will not make the filing by this  extended  due
  date.
  
  In  addition,  Dr.  Andrew A.  Pouring,  Sonex  Chairman  of the Board,  CEO and
  President,  reports that the Company has substantially  completed work under its
  ongoing  agreement with the Defense Advanced Research Projects Agency (DARPA) on
  a  project  to  develop a "heavy  fuel"  engine  (HFE)  combustion  process  for
  potential  Department  of Defense  (DoD)  applications  such as unmanned  aerial
  vehicles  (UAVs).  He explained  that Sonex has  demonstrated  the potential for
  lightweight,  multi-cylinder  engines running on JP-5,  military  kerosene-based
  heavy fuel by application of a Sonex Combustion System (SCS) unthrottled, direct
  fuel injection  combustion  process based on the Sonex Controlled  Auto-Ignition
  (SCAI)  technology.  The SCAI process is enabled by a  proprietary  Sonex piston
  technology that achieves in-cylinder chemical kinetics at a moderate compression
  ratio for auto ignition of the JP-5 to achieve engine stability and control, and
  fuel consumption substantially lower than a gasoline baseline engine.
  
  Dr.  Pouring  suggested  that outcomes from the DARPA program could validate the
  sparkless  SCAI process for  in-cylinder  control of ignition and combustion for
  potential  application  to gasoline  powered  automobiles to achieve better fuel
  economy.  He added that the Company  hopes to be in a position to announce  more
  specific project results in the near future following acceptance by DARPA of the
  Company's project report.
  
  In its SEC filing  for the  extension  of time to submit  the 2004 Form  10-KSB,
  Sonex  explained  that it did not  have  the  funds to  engage  its  independent
  accountants to conduct the audit of the December 31, 2004 financial  statements,
  and  that its  limited  staff  did not  have  time to  prepare  the Form  10-KSB
  document.  The Company had also  cautioned that it might not be in a position to
  file the Form 10-KSB by the extended due date, but it now indicates that it will
  not make the filing by April 15, 2005.
  
  Sonex CFO,  Secretary and board member George E. Ponticas  reports that the time
  spent this year by Dr. Pouring and he dealing with an investor lawsuit,  and the
  legal fees required, were among the factors resulting in the Company's inability
  to prepare  and file the Form  10-KSB.  He added  that  failure to file the Form
  10-KSB  by the  extended  due  date may have  significant  implications  for the
  Company until the filing is made, including the inability to register stock with
  the SEC and inability for shareholders to sell restricted stock.  Sonex will use
  its best efforts to file the report as soon as resources permit.
  
  While the Company  continues  to  experience  cash flow  problems,  Dr.  Pouring
  expressed optimism that revenue from the DARPA agreement,  the modest amounts of
  revenue  being  earned  from  work on  HFEs  for  small  UAV  applications,  and
  additional  short-term  loans from  shareholders  will provide Sonex the time to
  secure needed additional capital and/or revenue, and hire sufficient experienced
  personnel,  to take advantage of a number of potential  business  opportunities.
  There is no assurance,  however,  that the Company will be able to achieve these
  objectives.  The Company's  history of operating losses,  significant  financial
  liabilities,  and other risk factors mean that there still  remains  substantial
  doubt about the Company's ability to continue as a going concern.
  
  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 7, 2005
  
  SONEX RESEARCH, INC.
  Registrant
  
  /s/ George E. Ponticas
  ----------------------
  George E. Ponticas
  Chief Financial Officer and Secretary