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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08/03/1993
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Application #:
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07759097
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Filing Dt:
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09/06/1991
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Inventors:
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HEINZ MUELLER, CLAUS-PETER HEROLD, STEPHAN VON TAPAVICZA, DOUGLAS J. GRIMES et al
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Title:
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THE USE OF SELECTED ESTER OILS IN DRILLING FLUIDS AND MUDS
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Assignment:
1
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| HENKELSTRASSE 67 |
| DUESSELDORF, GERMANY D-405 |
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| COGNIS CORPORATION |
| JOHN E. DRACH |
| 2500 RENAISSANCE BLVD. |
| SUITE 200 |
| GULPH MILLS, PA 19406 |
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Assignment:
2
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ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
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| HENKELSTRASSE 67 |
| DUESSELDORF, GERMANY 40589 |
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| COGNIS DEPARTMENT |
| AARON R. ETTELMAN |
| PATENT DEPARTMENT |
| 300 BROOKSIDE AVENUE |
| AMBLER, PA 19002 |
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