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Patent Assignment Abstract of Title
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Total Assignments: 2
Patent #:
5658933
Issue Dt:
08/19/1997
Application #:
08332824
Filing Dt:
10/31/1994
Inventors:
KLAUS WEIDMANN, KARL-HEINZ BARINGHAUS, GEORG TSCHANK, MARTIN BICKEL
Title:
SUBSTITUTED HETEROCYCLIC CARBOXAMIDE ESTERS, THEIR PREPARATION AND THEIR USE AS PHARMACEUTICALS
Assignment: 1
Reel/Frame:
007328/0817Recorded: 01/19/1995Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
WEIDMANN, KLAUS
Exec Dt:
11/01/1994
BARINGHAUS, KARL-HEINZ
Exec Dt:
11/01/1994
TSCHANK, GEORG
Exec Dt:
11/01/1994
BICKEL, MARTIN
Exec Dt:
11/01/1994
Assignee:
HOECHST AKTIENGESELLSCHAFT
D-65926 FRANKFURT AM
MAIN, GERMANY
Correspondent:
MR. ERNEST F. CHAPMAN
FINNEGAN, HENDERSON, FARABOW, ET AL.
1300 I STREET, N.W.
WASHINGTON, D.C. 20005
Assignment: 2
Reel/Frame:
013158/0459Recorded: 08/07/2002Pages: 12
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
HOECHST AKTIENGESELLSCHAFT
Exec Dt:
06/10/2002
Assignee:
FIBROGEN, INC.
225 GATEWAY BLVD.
A CORPORATION DELAWARE
SOUTH SAN FRANCISCO, CALIFORNIA 94080
Correspondent:
FIBROGEN, INC.
LEANNE C. PRICE
IP DEPT.
225 GATEWAY BLVD.
SOUTH SAN FRANCISCO, CA 94080

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