IP Library › Granted Patent US 5,961,892
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US 5,961,892 · App. 09/151,982

Polyalkoxylated naphthopyrans

Inventors: Barry Van Gemert, Kevin J. Stewart
Patented Case View Patent ↗
Granted: Oct 5, 1999 Filed: Sep 11, 1998
Inventors
Barry Van Gemert
Kevin J. Stewart
Assignee (at issue)
PPG Industries Ohio, Inc.

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Quick Facts
Patent No.
US 5,961,892
App. No.
09/151,982
Filed
1998-09-11
Granted
1999-10-05
Kind
A