IP Library › Granted Patent US 4,612,191
Granted Patent Utility
US 4,612,191 · App. 06/643,405

Stain removal toothpaste

Inventors: Kuo-Chen Yeh, Joseph Synodis
Patented Case View Patent ↗
Granted: Sep 16, 1986 Filed: Aug 23, 1984
Inventors
Kuo-Chen Yeh
Joseph Synodis
Assignee (at issue)
BLOCK DRUG COMPANY INC.

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Quick Facts
Patent No.
US 4,612,191
App. No.
06/643,405
Filed
1984-08-23
Granted
1986-09-16
Kind
A