skip navigationU S P T O SealUnited States Patent and Trademark Office AOTW logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
Assignments on the Web > Patent Query
Patent Assignment Assignor Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignor Name : SEIFFGE, DIRK
Total Assignments: 14
Assignment: 1
Reel/Frame:004433/0020   Pages: 1
Recorded: 07/19/1985
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
WEITHMANN, KLAUS ULRICH
Exec Dt:
07/02/1985
2
SEIFFGE, DIRK
Exec Dt:
07/02/1985
Assignee
1
HOECHST AKTIENGESELLSCHAFT, A CORP OF GERMANY
FRANKFURT AM MAIN 80,, GERMANY D-6230
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4694024
NONE
06756674
Correspondence name and address
FINNEGAN, HENDERSON, FARABOW,
GARRETT & DUNNER
1775 K ST., N.W.
WASHINGTON, DC 20006
Assignment: 2
Reel/Frame:004936/0309   Pages: 1
Recorded: 07/20/1988
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
WEITHMANN, KLAUS U.
Exec Dt:
07/04/1988
2
SEIFFGE, DIRK
Exec Dt:
07/04/1988
Assignee
1
HOECHST AKTIENGESELLSCHAFT D-6230 FRANKFURT AM MAIN 80, GERMANY A COMPANY OF GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4983514
NONE
07196600
Correspondence name and address
FINNEGAN, HENDERSON, FARABOW,
GARRETT & DUNNER
1775 K STREET, N. W.
WASHINGTON, DC 20006
Assignment: 3
Reel/Frame:005574/0874   Pages: 3
Recorded: 01/07/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
WEITHMANN, KLAUS-ULRICH
Exec Dt:
12/17/1990
2
WESS, GUNTHER
Exec Dt:
12/17/1990
3
SEIFFGE, DIRK
Exec Dt:
12/17/1990
Assignee
1
HOECHST AKTIENGESELLSCHAFT, A CORP. OF THE FED. REP. OF GERMANY
D-6230 FRANKFURT AM MAIN 80, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5318987
NONE
07638321
Correspondence name and address
FINNEGAN, HENDERSON, FARABOW,
GARRETT AND DUNNER
FRANKLIN SQUARE BLDG., STE. 700
1300 I STREET, N.W.
WASHINGTON, DC 20005-3315
Assignment: 4
Reel/Frame:005632/0492   Pages: 3
Recorded: 02/08/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
GRAEVE, ROLF
Exec Dt:
01/14/1991
2
OKYAYUZ-BAKLOUTI, ISMAHAN
Exec Dt:
01/14/1991
3
SEIFFGE, DIRK
Exec Dt:
01/14/1991
Assignee
1
HOECHST AKTIENGESELLSCHAFT, A CORP. OF THE FED. REP. OF GERMANY
D-6230 FRANKFURT AM MAIN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5232922
NONE
07652606
Correspondence name and address
FINNEGAN, HENDERSON, FARABOW,
GARRETT AND DUNNER
FRANKLIN SQUARE BLDG.
SUITE 700, 1300 I STREET, N.W.
WASHINGTON, DC 20005-3315
Assignment: 5
Reel/Frame:006974/0327   Pages: 3
Recorded: 04/21/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FURRER, HARALD
Exec Dt:
03/02/1994
2
SEIFFGE, DIRK
Exec Dt:
03/02/1994
3
OKYAYUZ-BAKLOUTI, ISMAHAN
Exec Dt:
03/02/1994
Assignee
1
HOECHST AKTIENGESELLSCHAFT
D-65926 FRANKFURT AM MAIN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5556854
NONE
08230811
Correspondence name and address
FINNEGAN, HENDERSON, FARABOW, ET AL.
MR. JOHN B. TURNER
MANAGER, FILING AND PROSECUTION DEPT.
1300 I STREET, N.W.
WASHINGTON, D.C. 20005
Assignment: 6
Reel/Frame:007663/0059   Pages: 2
Recorded: 05/12/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TOEPFER, ALEXANDER
Exec Dt:
04/07/1995
2
KRETZSCHMAR, GERHARD
Exec Dt:
04/07/1995
3
BARTNIK, ECKART
Exec Dt:
04/12/1995
4
SEIFFGE, DIRK
Exec Dt:
04/18/1995
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5693621
NONE
08403525
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K STREET, N.W.,STE. 500
WASHINGTON, D.C. 20007-5109
Assignment: 7
Reel/Frame:007767/0523   Pages: 3
Recorded: 10/12/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KRETZSCHMAR, GERHARD
Exec Dt:
09/19/1995
2
SCHMIDT, WOFGANG
Exec Dt:
09/19/1995
3
SPRENGARD, ULRICH
Exec Dt:
09/20/1995
4
BARTNIK, ECKART
Exec Dt:
09/26/1995
5
SEIFFGE, DIRK
Exec Dt:
09/26/1995
6
KUNZ, HORST
Exec Dt:
09/26/1995
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5858994
NONE
08509079
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K. STREET, N. W.
SUITE 500
WASHINGTON, D.C. 20007-5109
Assignment: 8
Reel/Frame:009440/0320   Pages: 4
Recorded: 09/10/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KRETZSCHMAR, GERHARD
Exec Dt:
09/19/1995
2
SCHMIDT, WOLFGANG
Exec Dt:
09/20/1995
3
SPRENGARD, ULRICH
Exec Dt:
09/26/1995
4
BARTNIK, ECKART
Exec Dt:
09/26/1995
5
SEIFFGE, DIRK
Exec Dt:
09/26/1995
6
KUNZ, HORST
Exec Dt:
09/26/1995
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5858994
NONE
08509079
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K STREET NW, SUITE 500
WASHINGTON, DC 20007-5109
Assignment: 9
Reel/Frame:008534/0912   Pages: 25
Recorded: 05/16/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TOEPFER, ALEXANDER
Exec Dt:
10/02/1996
2
KRETZSCHMAR, GERHARD
Exec Dt:
10/02/1996
3
SCHOELKENS, BERNWARD
Exec Dt:
10/02/1996
4
KLEMM, PETER
Exec Dt:
10/02/1996
5
HUELS, CHRISTOPH
Exec Dt:
10/02/1996
6
SEIFFGE, DIRK
Exec Dt:
10/02/1996
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5739300
NONE
08726142
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K ST., NW
SUITE 500
WASHINGTON, DC 20007-5109
Assignment: 10
Reel/Frame:008404/0606   Pages: 2
Recorded: 01/24/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
TOEPFER, ALEXANDER
Exec Dt:
01/21/1997
2
KRETZSCHMAR, GERHARD
Exec Dt:
01/21/1997
3
BARTNIK, ECKART
Exec Dt:
01/21/1997
4
HUELS, CHRISTOPH
Exec Dt:
01/21/1997
5
SEIFFGE, DIRK
Exec Dt:
01/21/1997
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5811405
NONE
08788269
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K STREET, N.W., SUITE 500
WASHINGTON, D.C. 20007-5109
Assignment: 11
Reel/Frame:009108/0949   Pages: 2
Recorded: 04/08/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
STILZ, HANS ULRICH
Exec Dt:
01/17/1998
2
WEHNER, VOLKMAR
Exec Dt:
03/02/1998
3
HUELS, CHRISTOPH
Exec Dt:
03/19/1998
4
SEIFFGE, DIRK
Exec Dt:
03/12/1998
Assignee
1
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5998447
NONE
08972031
Correspondence name and address
FOLEY & LARDNER
COLIN G. SANDERCOCK
3000 K STREET, N.W., SUITE 500
WASHINGTON, DC 20007-5109
Assignment: 12
Reel/Frame:009815/0127   Pages: 2
Recorded: 12/08/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEHNER, VOLKMAR
Exec Dt:
11/13/1998
2
STILZ, HANS ULRICH
Exec Dt:
11/13/1998
3
SCHMIDT, WOLFGANG
Exec Dt:
11/19/1998
4
SEIFFGE, DIRK
Exec Dt:
11/19/1998
Assignee
1
HOECHST MARION ROUSSEL DEUTSCHLAND GMBH
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6034238
NONE
09158772
Correspondence name and address
FOLEY & LARDNER
DAVID W. WOODWARD
3000 K STREET, N.W.
SUITE 500
WASHINGTON, D.C. 20007-2109
Assignment: 13
Reel/Frame:010364/0063   Pages: 2
Recorded: 12/03/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEHNER, VOLKMAR
Exec Dt:
11/13/1998
2
STILZ, HANS ULRICH
Exec Dt:
11/13/1998
3
SCHNIDT, WOLFGANG
Exec Dt:
11/19/1998
4
SEIFFGE, DIRK
Exec Dt:
11/19/1998
Assignee
1
HOECHST MARION ROUSSEL DEUTSCHLAND GMBH
FRANKFURT AM MAIN, GERMANY D-659
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6423712
NONE
09157241
Correspondence name and address
FOLEY & LARDNER
DAVID W. WOODWARD
3000 K STREET, N.W., SUITE 500
WASHINGTON, D.C. 20007-5109
Assignment: 14
Reel/Frame:011063/0014   Pages: 3
Recorded: 08/11/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEHNER, VOLKMAR
Exec Dt:
05/30/2000
2
STILZ, HANS ULRICH
Exec Dt:
06/02/2000
3
SCHMIDT, WOLFGANG
Exec Dt:
06/05/2000
4
SEIFFGE, DIRK
Exec Dt:
06/09/2000
Assignee
1
AVENTIS PHARMA DEUTSCHLAND GMBH
65926 FRANKFURT AM MAIN
GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6399643
NONE
09572273
Correspondence name and address
FOLEY & LARDNER
PATRICIA D. GRANADOS
WASHINGTON HARBOUR
3000 K STREET, N.W., SUITE 500
WASHINGTON, D.C. 20007-5109

Search Results as of: 05/01/2024 11:06 AM
If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6
Web interface last modified: August 25, 2017 v.2.6
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY STATEMENT