Granted Patent
Utility
US 4,609,617 · App. 06/544,992
Polyester film support having epoxy copolymer coating for photographic use
Inventors:
Toshiaki Yamazaki, Takanori Nakadate, Kenichi Kitahara, Morio Kobayashi, Noboru Fujimori, Ryuji Shimosaki
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Oct 24, 1983
Inventors
Toshiaki Yamazaki
Takanori Nakadate
Kenichi Kitahara
Morio Kobayashi
Noboru Fujimori
Ryuji Shimosaki
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.