Granted Patent
Utility
US 4,929,715 · App. 07/292,863
Reduction of carboxyl end groups in polyester with dilactim ethers
Inventors:
Yousef Mohajer, Stanley D. Lazarus
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Jan 3, 1989
Inventors
Yousef Mohajer
Stanley D. Lazarus
Assignee (at issue)
AlliedSignal, 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.