Patent Assignment Details
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| Reel/Frame: | 005461/0230 | |
| Pages: | 3 |
| | Recorded: | 10/02/1990 | | |
| 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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04/06/1993
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Application #:
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07557432
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Filing Dt:
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07/23/1990
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Title:
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PHOTOCHROMIC CHROMENE COMPOUNDS
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Correspondence name and address
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IRWIN M. STEIN, ESQ.
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PATENT DEPARTMENT
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PPG INDUSTRIES, INC.
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ONE PPG PLACE
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PITTSBURGH, PA 15272
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