Granted Patent
Utility
US 4,422,914 · App. 06/225,809
Polymer composition having terminal alkene and terminal carboxyl groups
Inventors:
Jung-Hsien Tsao, Paul R. Hein
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Jan 16, 1981
Inventors
Jung-Hsien Tsao
Paul R. Hein
Assignee (at issue)
W. R. Grace & Co.
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.