IP Library › Granted Patent US 4,897,447
Granted Patent Utility
US 4,897,447 · App. 07/138,662

Thermoplastic compositions and impact modifiers for same

Inventor: William G. Williams
Patented Case View Patent ↗
Granted: Jan 30, 1990 Filed: Dec 28, 1987
Inventor
William G. Williams
Assignee (at issue)
Copolymer Rubber & Chemical Corporation

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Quick Facts
Patent No.
US 4,897,447
App. No.
07/138,662
Filed
1987-12-28
Granted
1990-01-30
Kind
A