Manufacture of 3,3'4,4'-biphenyltetracarboxylic acid
IL99534A0Inactive Publication Date: 1992-08-18EI DU PONT DE NEMOURS & CO
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Patent Information
- Application Number
- IL99534
- Authority / Receiving Office
- IL · IL
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 1990-09-21
- Filing Date
- 1991-09-20
- Publication Date
- 1992-08-18
- Estimated Expiration
- Not applicable · inactive patent
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