Invention Grant
- Patent Title: Purification of benzenetetracarboxylic dianhydrides
- Patent Title (中): 苯四羧酸二酐的纯化
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Application No.: US42419065Application Date: 1965-01-08
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Publication No.: US3344152APublication Date: 1967-09-26
- Inventor: VANDERWERFF WILLIAM D
- Applicant: SUN OIL CO
- Assignee: Sunoco Inc
- Current Assignee: Sunoco Inc
- Priority: US42419065 1965-01-08
- Main IPC: C07C51/573
- IPC: C07C51/573
Information query
