Granted Patent
Utility
US 4,609,683 · App. 06/747,521
Quasi-prepolymers from isatoic anhydride derivatives of polyoxyalkylene polyamines and rim products made therefrom
Inventors:
Robert A. Grigsby, Jr., Richard J. G. Dominguez
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Jun 21, 1985
Inventors
Robert A. Grigsby, Jr.
Richard J. G. Dominguez
Assignee (at issue)
Texaco 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.