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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 : LUHMANN, ERHARD
Total Assignments: 25
Assignment: 1
Reel/Frame:004053/0375   Pages: 1
Recorded: 09/30/1982
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LUHMANN, ERHARD
Exec Dt:
09/17/1982
2
HOPPE, LUTZ
Exec Dt:
09/17/1982
3
SZABLIKOWSKI, KLAUS
Exec Dt:
09/17/1982
4
LAMPERT, FRIEDRICH-KARL
Exec Dt:
09/17/1982
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT, A CORP. OF GERMANY
WALSRODE,, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4517324
NONE
06429469
Correspondence name and address
CONNOLLY & HUTZ
THE FARMERS BANK BLDG.
WILMINGTON, DE 19899
Assignment: 2
Reel/Frame:004307/0770   Pages: 1
Recorded: 09/02/1984
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LUHMANN, ERHARD
Exec Dt:
08/29/1984
2
HOPPE, LUTZ
Exec Dt:
08/29/1984
3
SZABLIKOWSKI, KLAUS
Exec Dt:
08/29/1984
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT A CORP. OF GERMANY
WALSRODE,, GERMANY D-3030
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4590019
NONE
06647340
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
600 THIRD AVE.
NEW YORK, NY 10016
Assignment: 3
Reel/Frame:004436/0982   Pages: 1
Recorded: 07/30/1985
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LUHMANN, ERHARD
Exec Dt:
07/15/1985
2
HOPPE, LUTZ
Exec Dt:
07/15/1985
Assignee
1
WOLFF WALSRODE AG, A CORP. OF GERMANY
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4659387
NONE
06760373
Correspondence name and address
SPRUNG, HORN, KRAMER & WOODS
600 THIRD AVE.,
NEW YORK, NY 10016
Assignment: 4
Reel/Frame:004499/0458   Pages: 1
Recorded: 11/22/1985
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LUHMANN, ERHARD
Exec Dt:
11/12/1985
2
HOPPE, LUTZ
Exec Dt:
11/12/1985
3
SZABLIKOWSKI, KLAUS
Exec Dt:
11/12/1985
4
TRAENCKNER, HANS-JOACHIM
Exec Dt:
11/12/1985
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT
A CORP OF GERMANY
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4731121
NONE
06801176
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
600 THIRD AVE.
NEW YORK, NY 10016
Assignment: 5
Reel/Frame:004992/0476   Pages: 1
Recorded: 12/12/1988
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
PIEPHO, MICHAEL
Exec Dt:
11/15/1988
2
LUHMANN, ERHARD
Exec Dt:
11/15/1988
3
HOPPE, LUTZ
Exec Dt:
11/15/1988
4
SZABLIKOWSKI, KLAUS
Exec Dt:
11/15/1988
Assignee
1
WOLFF WALSRODE AG, WALSRODE, GERMANY, A CORP. OF GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4933428
NONE
07283346
Correspondence name and address
SPRUNG, HORN, KRAMER & WOODS
600 THIRD AVE.
NEW YORK, NY 10016
Assignment: 6
Reel/Frame:005053/0856   Pages: 1
Recorded: 03/13/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
HOPPE, LUTZ
Exec Dt:
03/29/1989
2
KOCH, WOLFGANG
Exec Dt:
03/29/1989
3
LUHMANN, ERHARD
Exec Dt:
03/29/1989
4
PIEPHO, MICHAEL
Exec Dt:
03/29/1989
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4970247
NONE
07337245
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
600 THIRD AVENUE
NEW YORK, NY 10016
Assignment: 7
Reel/Frame:005114/0886   Pages: 1
Recorded: 08/16/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
PIEPHO, MICHAEL
Exec Dt:
08/02/1989
2
HOPPE, LUTZ
Exec Dt:
08/02/1989
3
LUHMANN, ERHARD
Exec Dt:
08/02/1989
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5089586
NONE
07394601
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
600 THIRD AVE.,
NEW YORK, NY 10016
Assignment: 8
Reel/Frame:005157/0649   Pages: 1
Recorded: 10/10/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
HOPPE, LUTZ
Exec Dt:
09/28/1989
2
KOCH, WOLFGANG
Exec Dt:
09/28/1989
3
LUHMANN, ERHARD
Exec Dt:
09/28/1989
4
PIEPHO, MICHAEL
Exec Dt:
09/28/1989
Assignee
1
WOLFF WALSRODE AKTIENGESELLSCHAFT
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5011874
NONE
07419070
Correspondence name and address
SPRUNG HORN KRAMER AND WOODS
600 THIRD AVENUE
NEW YORK, NY 10016
Assignment: 9
Reel/Frame:005658/0023   Pages: 2
Recorded: 03/29/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
KRESSDORF, BURKHARD
Exec Dt:
02/08/1991
2
LUHMANN, ERHARD
Exec Dt:
02/08/1991
3
HOPPE, LUTZ
Exec Dt:
02/08/1991
4
KOCH, WOLFGANG
Exec Dt:
02/08/1991
5
SZABLIKOWSKI, KLAUS
Exec Dt:
02/08/1991
Assignee
1
WOLFF WALSRODE AG, A CORP OF GERMANY
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5274067
NONE
07677199
Correspondence name and address
SPRUNG, HORN, KRAMER & WOODS
1140 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 10
Reel/Frame:005658/0721   Pages: 2
Recorded: 03/29/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
KRESSDORF, BURKHARD
Exec Dt:
02/08/1991
2
LUHMANN, ERHARD
Exec Dt:
02/08/1991
3
HOPPE, LUTZ
Exec Dt:
02/08/1991
Assignee
1
WOLFF WALSRODE AG, A CORP. OF GERMANY
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5102976
NONE
07677046
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
1140 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 11
Reel/Frame:006151/0267   Pages: 2
Recorded: 06/05/1992
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
LUHMANN, ERHARD
Exec Dt:
05/05/1992
2
KRESSDORF, BURKHARD
Exec Dt:
05/07/1992
3
HOPPE, LUTZ
Exec Dt:
05/05/1992
4
SZABLIKOWSKI, KLAUS
Exec Dt:
05/05/1992
5
WEBER, GUNTER
Exec Dt:
05/05/1992
6
MEYER-STORK, SEBASTIAN
Exec Dt:
05/05/1992
Assignee
1
WOLFF WALSRODE AG, A CORP. OF GERMANY
WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5352730
NONE
07894387
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
LEONARD HORN
1140 AVE. OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 12
Reel/Frame:006582/0615   Pages: 2
Recorded: 06/10/1993
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KRESSDORF, BURKHARD
Exec Dt:
04/15/1993
2
DANNHORN, WOLFGANG
Exec Dt:
04/15/1993
3
LUHMANN, ERHARD
Exec Dt:
04/20/1993
4
HOPPE, LUTZ
Exec Dt:
03/14/1993
Assignee
1
WOLFF WALSRODE AG
D 3030
WALSRODE,, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5459196
NONE
08075208
Correspondence name and address
SPRUNG ET AL
LEONARD HORN, ESQ.
660 WHITE PLAINS ROAD
TARRYTOWN, NY 10591
Assignment: 13
Reel/Frame:007348/0626   Pages: 2
Recorded: 02/10/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LUHMANN, ERHARD
Exec Dt:
12/12/1994
2
HOPPE, LUTZ
Exec Dt:
12/16/1994
3
DANNHORN, WOLFGANG
Exec Dt:
12/12/1994
4
JUHL, HANS-JURGEN
Exec Dt:
12/15/1994
Assignee
1
WOLFF WALSRODE AG
WALSRODE D-29655, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5539018
NONE
08386791
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
LEONARD HORN, ESQ.
4TH FLOOR
660 WHITE PLAINS ROAD
TARRYTOWN, NY 10591-5144
Assignment: 14
Reel/Frame:007661/0817   Pages: 5
Recorded: 05/23/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DANNHORN, WOLFGANG
Exec Dt:
03/14/1995
2
HOPPE, LUTZ
Exec Dt:
03/28/1995
3
LUHMANN, ERHARD
Exec Dt:
03/14/1995
4
JUHL, HANS-JURGEN
Exec Dt:
03/16/1995
Assignee
1
WOLFF WALSRODE AG
WALSRODE, GERMANY D 296
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5565504
NONE
08448215
Correspondence name and address
LEONARD HORN
SPRUNG HORN KRAMER & WOODS
660 WHITE PLAINS ROAD
TARRYTOWN, NY 10591-5144
Assignment: 15
Reel/Frame:008107/0027   Pages: 3
Recorded: 07/09/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DANNHORN, WOLFGANG
Exec Dt:
07/01/1996
2
HECHT, REINHOLD
Exec Dt:
07/01/1996
3
HOPPE, LUTZ
Exec Dt:
07/01/1996
4
LUHMANN, ERHARD
Exec Dt:
07/02/1996
Assignee
1
WOLFF WALSRODE AG
29655 WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5684081
NONE
08677289
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
LEONARD HORN
660 WHITE PLAINS ROAD
TARRYTOWN, NEW YORK 10594-5144
Assignment: 16
Reel/Frame:008356/0876   Pages: 3
Recorded: 02/10/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DANNHORN, WOLFGANG
Exec Dt:
01/20/1997
2
HOPPE, LUTZ
Exec Dt:
01/20/1997
3
LUHMANN, ERHARD
Exec Dt:
01/20/1997
4
JUHL, HANS-JURGEN
Exec Dt:
01/20/1997
Assignee
1
WOLFF WALSRODE AG
D 29655 WALRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5711793
NONE
08759204
Correspondence name and address
SPRUNG HORN KRAMER & WOODS
WILLIAM C. GERSTENZANG
660 WHITE PLAINS ROAD
TARRYTOWN, NY 10591-5144
Assignment: 17
Reel/Frame:009720/0192   Pages: 2
Recorded: 01/21/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
IRLE, CHRISTOPH
Exec Dt:
12/15/1998
2
BLUM, HARALD
Exec Dt:
12/17/1998
3
BRAHM, MARTIN
Exec Dt:
01/05/1999
4
KREMER, WOLFGANG
Exec Dt:
01/06/1999
5
ROSCHU, ROLF
Exec Dt:
01/07/1999
6
LUHMANN, ERHARD
Exec Dt:
01/07/1999
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENTE UND LIZENZEN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6197874
NONE
09234866
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15235-9741
Assignment: 18
Reel/Frame:010363/0143   Pages: 2
Recorded: 09/07/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HECHT, REINHOLD
Exec Dt:
08/18/1999
2
HOPPE, LUTZ
Exec Dt:
08/18/1999
3
LUHMANN, ERHARD
Exec Dt:
08/30/1999
Assignee
1
WOLFF WALSRODE AG
D-29655 WALSRODE, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6274653
NONE
09380859
Correspondence name and address
BAYER CORPORATION
ARON PREIS
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 19
Reel/Frame:011002/0680   Pages: 2
Recorded: 06/23/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
IRLE, CHRISTOPH
Exec Dt:
04/10/2000
2
LAAS, HANS-JOSEF
Exec Dt:
04/10/2000
3
KREMER, WOLFGANG
Exec Dt:
04/10/2000
4
ROSCHU, ROLF
Exec Dt:
04/10/2000
5
LUHMANN, ERHARD
Exec Dt:
04/10/2000
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PENNSYLVANIA 15205
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6420478
NONE
09602281
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 20
Reel/Frame:011337/0045   Pages: 2
Recorded: 11/20/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEIKARD, JAN
Exec Dt:
10/09/2000
2
LUHMANN, ERHARD
Exec Dt:
10/10/2000
3
ERDMANN, DIETER
Exec Dt:
10/14/2000
4
FISCHER, WOLFGANG
Exec Dt:
10/19/2000
5
KREMER, WOLFGANG
Exec Dt:
10/10/2000
Assignee
1
BAYER AKTIENGESELLSCHAFT
KONZERNBEREICH RP
PATENT UND LIZENZEN
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6521702
NONE
09716741
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 21
Reel/Frame:011685/0571   Pages: 3
Recorded: 03/27/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEIKARD, JAN
Exec Dt:
01/30/2001
2
LUHMANN, ERHARD
Exec Dt:
01/31/2001
3
KREMER, WOLFGANG
Exec Dt:
02/06/2001
4
MEIXNER, JURGEN
Exec Dt:
01/31/2001
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENT UND LIZENZEN
KONZERNBEREICH RP
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6541536
US20010038918
09818200
Correspondence name and address
BAYER CORPORATION
THOMAS W. ROY
PATENT DEPARTMENT
PITTSBURGH, PA 15205-9741
Assignment: 22
Reel/Frame:012561/0192   Pages: 2
Recorded: 01/28/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
PROBST, JOACHIM
Exec Dt:
11/08/2001
2
LUHMANN, ERHARD
Exec Dt:
11/12/2001
3
CLEMENS, HORST
Exec Dt:
11/21/2001
4
KREMER, WOLFGANG
Exec Dt:
12/09/2001
5
MEIXNER, JURGEN
Exec Dt:
11/12/2001
6
LAAS, HANS-JOSEF
Exec Dt:
11/12/2001
Assignee
1
BAYER AKTIENGESELLSCHAFT
D-51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6583215
US20020143101
09944447
Correspondence name and address
BAYER CORP.
THOMAS W. ROY
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 23
Reel/Frame:014166/0620   Pages: 2
Recorded: 06/14/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GERTZMANN, ROLF
Exec Dt:
04/24/2003
2
IRLE, CHRISTOPH
Exec Dt:
05/12/2003
3
WEIKARD, JAN
Exec Dt:
04/24/2003
4
ROSCHU, ROLF
Exec Dt:
05/07/2003
5
LUHMANN, ERHARD
Exec Dt:
05/05/2003
Assignee
1
BAYER AKTIENGESELLSCHAFT
PATENTE UND LIZENZEN
LEVERKUSEN, GERMANY D-51368
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6710120
US20030191273
10403222
Correspondence name and address
BAYER POLYMERS LLC
JOSEPH C. GIL
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 24
Reel/Frame:014174/0085   Pages: 3
Recorded: 06/10/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WEIKARD, JAN
Exec Dt:
05/08/2003
2
LUHMANN, ERHARD
Exec Dt:
05/13/2003
3
IRLE, CHRISTOPH
Exec Dt:
05/20/2003
4
RISCHE, THORSTEN
Exec Dt:
05/12/2003
5
NAUJOKS, KARIN
Exec Dt:
05/14/2003
6
FELLER, THOMAS
Exec Dt:
05/15/2003
7
MAZANEK, JAN
Exec Dt:
05/16/2003
Assignee
1
BAYER AKTIENGESELLSCHAFT
D 51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6960639
US20040006152
10458119
Correspondence name and address
BAYER POLYMERS LLC
JOSEPH C. GIL
PATENT DEPARTMENT
100 BAYER ROAD
PITTSBURGH, PA 15205-9741
Assignment: 25
Reel/Frame:017803/0681   Pages: 3
Recorded: 04/20/2006
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GERTZMANN, ROLF
Exec Dt:
02/16/2006
2
LUHMANN, ERHARD
Exec Dt:
02/20/2006
3
KOPP, RICHARD
Exec Dt:
02/17/2006
Assignee
1
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20060240264
11408233
Correspondence name and address
THOMAS W. ROY
BAYER MATERIALSCIENCE LLC
100 BAYER ROAD
PITTSBURGH, PA 15205-9741

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