Granted Patent
Utility
US 5,350,669 · App. 08/183,486
Silver-carboxylate/1,2-diazine compounds as silver sources in photothermographic and thermographic elements
Inventors:
David R. Whitcomb, William C. Frank
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Jan 19, 1994
Inventors
David R. Whitcomb
William C. Frank
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.