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Patent Assignment Abstract of Title
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Total Assignments: 2
Patent #:
Issue Dt:
11/30/1993
Application #:
07580020
Filing Dt:
09/10/1990
Inventors:
JERRY J. WEERS, TIMOTHY J. O'BRIEN, CATHERINE E. THOMASSON
Title:
METHOD OF SUPPRESSION OF HYDROGEN SULFIDE WITH HETEROCYCLIC-AMINE ALDEHYDE REACTION PRODUCTS
Assignment: 1
Reel/Frame:
005438/0464Recorded: 09/10/1990Pages: 4
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors:
Exec Dt:
09/10/1990
Exec Dt:
09/10/1990
Exec Dt:
09/10/1990
Assignee:
100 NORTH BROADWAY
ST. LOUIS, MISSOURI 63102
Correspondent:
PATENT DEPT.,
PETROLITE CORP.
369 MARSHALL AVE.,
ST. LOUIS, MO 63119
Assignment: 2
Reel/Frame:
008709/0825Recorded: 09/22/1997Pages: 8
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
07/02/1997
Assignee:
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Correspondent:
BAKER HUGHES INCORPORATED
MARYLN DAWSON
3900 ESSEX LANE, SUITE 1200
HOUSTON, TX 77027

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