IP Library › Granted Patent US 4,780,522
Granted Patent Utility
US 4,780,522 · App. 07/021,706

Sulfur-containing polyurethane base lens resin

Inventors: Nobuyuki Kajimoto, Akihiro Tamaki, Teruyuki Nagata
Patented Case View Patent ↗
Granted: Oct 25, 1988 Filed: Mar 4, 1987
Inventors
Nobuyuki Kajimoto
Akihiro Tamaki
Teruyuki Nagata
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated

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Quick Facts
Patent No.
US 4,780,522
App. No.
07/021,706
Filed
1987-03-04
Granted
1988-10-25
Kind
A