Granted Patent
Utility
US 5,496,695 · App. 08/369,730
Hydrazide compounds useful as co-developers for black-and-white photothermographic elements
Inventors:
Sharon M. Simpson, Lori S. Harring
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Jan 6, 1995
Inventors
Sharon M. Simpson
Lori S. Harring
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.