Granted Patent
Utility
US 5,616,449 · App. 08/531,486
Lithographic printing plates with dispersed rubber additives
Inventors:
Chieh-Min Cheng, Anthony C. Giudice, Rong-Chang Liang, William C. Schwarzel, Leonard C. Wan
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Sep 21, 1995
Inventors
Chieh-Min Cheng
Anthony C. Giudice
Rong-Chang Liang
William C. Schwarzel
Leonard C. Wan
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.