IP Library › Granted Patent US 5,179,135
Granted Patent Utility
US 5,179,135 · App. 07/604,857

Poly(vinylphosphonic acid) glass ionomer cement

Inventors: John Ellis, Alan D. Wilson
Patented Case View Patent ↗
Granted: Jan 12, 1993 Filed: Oct 26, 1990
Inventors
John Ellis
Alan D. Wilson
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION

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Quick Facts
Patent No.
US 5,179,135
App. No.
07/604,857
Filed
1990-10-26
Granted
1993-01-12
Kind
A