Granted Patent
Utility
US 4,946,933 · App. 07/316,200
Elastomeric polyamide hot melt adhesive from low molecular weight polyoxyethylene diamine
Inventors:
George P. Speranza, Wei-Yang Su
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Feb 27, 1989
Inventors
George P. Speranza
Wei-Yang Su
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.