Granted Patent
Utility
US 5,075,503 · App. 07/576,826
Hydrazine terminated polyoxyalkylene amines
Inventors:
Jiang-Jen Lin, George P. Speranza
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Sep 4, 1990
Inventors
Jiang-Jen Lin
George P. Speranza
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.