IP Library › Granted Patent US 4,222,916
Granted Patent Utility
US 4,222,916 · App. 05/955,714

Rubberized coal tar pitch emulsion

Inventor: P. Richard Hergenrother
Patented Case View Patent ↗
Granted: Sep 16, 1980 Filed: Oct 30, 1978
Inventor
P. Richard Hergenrother
Assignee (at issue)
KOPPERS, INC.

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Quick Facts
Patent No.
US 4,222,916
App. No.
05/955,714
Filed
1978-10-30
Granted
1980-09-16
Kind
A