Granted Patent
Utility
US 4,489,205 · App. 06/507,976
Preparation of a glutaraldehyde precursor
Inventor:
Nan S. Chu
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Jun 28, 1983
Inventor
Nan S. Chu
Assignee (at issue)
Union Carbide Corporation
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.