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Patent Assignment Abstract of Title
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Total Assignments: 2
Patent #:
7250483
Issue Dt:
07/31/2007
Application #:
11169101
Filing Dt:
06/28/2005
Publication #:
20060004178
Pub Dt:
01/05/2006
Inventors:
Helmut-Werner Heuer, Melanie Mothrath, Peter Snobl, Lothar Bunzel, Lydia Simon et al
Title:
INHIBITION OF CATALYTICALLY ACTIVE IMPURITIES IN POLYCARBONATE BY THE MELT TRANSESTERIFICATION PROCESS
Assignment: 1
Reel/Frame:
017046/0261Recorded: 10/03/2005Pages: 5
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
HEUER, HELMUT-WERNER
Exec Dt:
08/19/2005
MOTHRATH, MELANIE
Exec Dt:
09/04/2005
SNOBL, PETER
Exec Dt:
08/19/2005
BUNZEL, LOTHAR
Exec Dt:
08/26/2005
PFINGST, THOMAS
Exec Dt:
08/22/2005
BUTS, MARC
Exec Dt:
08/24/2005
SIMON, LYDIA
Exec Dt:
08/15/2005
Assignee:
BAYER MATERIALSCIENCE AG
51368 LEVERKUSEN, GERMANY
Correspondent:
ARON PREIS
BAYER MATERIALSCIENCE LLC
100 BAYER ROAD
PATENT DEPARTMENT
PITTSBURGH, PA 15205-9741
Assignment: 2
Reel/Frame:
038353/0325Recorded: 04/05/2016Pages: 55
Conveyance:
CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor:
BAYER MATERIALSCIENCE AG
Exec Dt:
09/01/2015
Assignee:
COVESTRO DEUTSCHLAND AG
KAISER-WILHELM-ALLEE 60
LEVERKUSEN, GERMANY 51373
Correspondent:
DONALD R. PALLADINO
1 COVESTRO CIRCLE
BLDG 4
PITTSBURGH, PA 15205

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