IP Library › Granted Patent US 4,707,536
Granted Patent Utility
US 4,707,536 · App. 06/804,615

Catalytic preparation of aromatic polyketone from phosgene and aromatic ether or sulfide

Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Seiichi Nozawa
Patented Case View Patent ↗
Granted: Nov 17, 1987 Filed: Dec 5, 1985
Inventors
Norihiko Yoneda
Tsuyoshi Fukuhara
Seiichi Nozawa
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.

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Quick Facts
Patent No.
US 4,707,536
App. No.
06/804,615
Filed
1985-12-05
Granted
1987-11-17
Kind
A