Patent Assignment Abstract of Title
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Total Assignments:
2
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Patent #:
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Issue Dt:
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11/03/1992
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Application #:
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07529026
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Filing Dt:
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05/25/1990
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Inventors:
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JOHN A. SCHIELD, MICHAEL I. NAIMAN, GARY A. SCHERUBEL
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Title:
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POLYIMIDE QUATERNARY SALTS AS CLAY STABILIZATION AGENTS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST.
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| 100 NORTH BROADWAY |
| ST. LOUIS, MISSOURI 63102 |
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| PETROLITE CORP., |
| 369 MARSHALL AVE., |
| ST. LOUIS, MO 63119 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| 3900 ESSEX LANE |
| HOUSTON, TEXAS 77027 |
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| BAKER HUGHES INCORPORATED |
| MARYLN DAWSON |
| 3900 ESSEX LANE, SUITE 1200 |
| HOUSTON, TX 77027 |
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