Granted Patent
Utility
US 5,081,182 · App. 07/488,312
Cationic monomer delayed addition process
Inventors:
Peter M. Robinson, Nguyen Van-Det
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Mar 5, 1990
Inventors
Peter M. Robinson
Nguyen Van-Det
Assignee (at issue)
Exxon Chemical Patents, Inc.
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.