Granted Patent
Utility
US 5,415,993 · App. 08/198,531
Thermoreversible organogels for photothermographic elements
Inventors:
Kenneth L. Hanzalik, George H. Crawford, Sharon M. Rozzi, David Scanlan
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Feb 17, 1994
Inventors
Kenneth L. Hanzalik
George H. Crawford
Sharon M. Rozzi
David Scanlan
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.