Patent Assignment Details
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Reel/Frame: | 004670/0851 | |
| Pages: | 1 |
| | Recorded: | 01/28/1987 | | |
Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
1
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Patent #:
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Issue Dt:
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03/01/1988
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Application #:
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07007772
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Filing Dt:
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01/28/1987
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Title:
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MODIFIED LIGNOSULFONATE DRILLING FLUID DISPERSANTS AND PROCESS FOR THE PREPARATION THEREOF
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Assignee
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320 PARK AVENUE |
NEW YORK, NEW YORK 10022 |
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Correspondence name and address
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WELSH AND KATZ, LTD.,
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135 SOUTH LA SALLE ST.
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CHICAGO, IL 60603
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