Patent Assignment Details
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Reel/Frame: | 004887/0857 | |
| Pages: | 1 |
| | Recorded: | 05/23/1988 | | |
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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07/04/1989
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Application #:
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07173408
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Filing Dt:
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03/25/1988
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Title:
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PROPANONE 1,3-DISULFONIC ACID AS AN ESTERIFICATION CATALYST
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Assignee
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THREE PARKWAY |
PHILADELPHIA, PENNSYLVANIA 19102 |
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Correspondence name and address
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BERNARD F. PLANTZ
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PENNWALT CORPORATION
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PATENT DEPARTMENT
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3 PARKWAY
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PHILADELPHIA, PA 19102
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