UNITED STATES
                             SECURITIES AND EXCHANGE COMMISSION
                                  WASHINGTON, D.C. 20549




                                           FORM 15


  Certification and Notice of Termination of Registration under Section
  12(g) of the Securities Exchange Act of 1934 or Suspension of Duty to
  File Reports under Sections 13 and 15(d) of the Securities Exchange Act
  of 1934.




  Commission File Number:  333-117991-01


    IMPAC Secured Assets Corporation
    Mortgage Pass-Through Certificates,
    Series 2004-3  Trust

  (Exact name of Registrant as specified in its charter)




    c/o Wells Fargo Bank, N.A.
    9062 Old Annapolis Road
    Columbia, MD 21045
    (410) 884-2000



     (Address, including zip code, and telephone number, including area code,
     of Registrant's principal executive offices)


  1-A-1

  1-A-2

  1-A-3

  1-A-4

  1-A-5

  2-A-1

  2-A-2

  B

  M-1

  M-2

  M-3

  M-4

  M-5

  P

  R

  C


  (Title of each class of securities covered by this Form)

     None

  (Titles of all other classes of securities for which a duty to file
  reports under Section 13(a) or 15(d) remains)



  Please place an X in the box(es) to designate the appropriate rule
  provision(s) relied upon to terminate or suspend the duty to file reports:


     Rule 12g-4(a)(1)(i)           / /

     Rule 12g-4(a)(1)(ii)          / /

     Rule 12g-4(a)(2)(i)           / /

     Rule 12g-4(a)(2)(ii)          / /

     Rule 15d-6                    /X/

     Rule 12h-3(b)(1)(i)           /X/

     Rule 12h-3(b)(1)(ii)          / /

     Rule 12h-3(b)(2)(i)           / /

     Rule 12h-3(b)(2)(ii)          / /


  Approximate number of holders of record as of the certification or notice
  date:
                Less than 300 Holders




  Pursuant to the requirements of the Securities Exchange Act of 1934,

    IMPAC Secured Assets Corporation
    Mortgage Pass-Through Certificates,
    Series 2004-3  Trust


  has caused this certification/notice to be signed on its behalf by the
  undersigned duly authorized person.


  Date: 01/25/2005
  By: /s/ Beth Belfield, Assistant Vice President



  Instruction: This form is required by Rules 12g-4, 12h-3 and 15d-6 of
  the General Rules and Regulations under the Securities Exchange Act of
  1934. The Registrant shall file with the Commission three copies of
  Form 15, one of which shall be manually signed. It may be signed by an
  officer of the Registrant, by counsel or by any other duly authorized
  person. The name and title of the person signing the form shall be
  typed or printed under the signature.