Granted Patent
Utility
US 5,233,003 · App. 07/963,880
Process for the preparation of gel-free self-crosslinking copolymers derived from blocked isopropenyl-alpha, alpha-dimethylbenzyl isocyanate
Inventors:
Howard R. Lucas, Kuang-Jong Wu
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Oct 20, 1992
Inventors
Howard R. Lucas
Kuang-Jong Wu
Assignee (at issue)
American Cyanamid Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.