IP Library › Granted Patent US 4,840,999
Granted Patent Utility
US 4,840,999 · App. 07/095,075

Dehydrogenated polyspiroheptadiene

Inventors: Bernd Tieke, Sheik A. Zahir
Patented Case View Patent ↗
Granted: Jun 20, 1989 Filed: Sep 11, 1987
Inventors
Bernd Tieke
Sheik A. Zahir
Assignee (at issue)
Ciba-Geigy

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Quick Facts
Patent No.
US 4,840,999
App. No.
07/095,075
Filed
1987-09-11
Granted
1989-06-20
Kind
A