Granted Patent
Utility
US 5,567,786 · App. 08/595,902
Polymerizable composition of vinylpyrrolidone and vinyl caprolactam
Inventors:
Susan Y. Tseng, Philip F. Wolf
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Feb 6, 1996
Inventors
Susan Y. Tseng
Philip F. Wolf
Assignee (at issue)
ISP INVESTMENTS LLC
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.