Granted Patent
Utility
US 5,185,385 · App. 07/685,197
Polymerization process
Inventors:
Ratana Kanluen, Brigitte H. Licht
Patented Case
View Patent ↗
Granted: Feb 9, 1993
Filed: Apr 15, 1991
Inventors
Ratana Kanluen
Brigitte H. Licht
Assignee (at issue)
Texaco Chemical 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.