Granted Patent
Utility
US 4,946,964 · App. 07/131,911
Photographic compounds
Inventors:
Roger A. Boggs, John B. Mahoney, Avinash C. Mehta, William C. Schwarzel, Lloyd D. Taylor
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Dec 11, 1987
Inventors
Roger A. Boggs
John B. Mahoney
Avinash C. Mehta
William C. Schwarzel
Lloyd D. Taylor
Assignee (at issue)
Polaroid 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.