Granted Patent
Utility
US 4,229,523 · App. 06/025,395
Method of undercoating treatment of polyester films for photographic light-sensitive materials
Inventors:
Hideyasu Ohta, Jun Shirasaki, Masaru Kanbe, Naoto Abe, Takahiro Uozumi, Masayoshi Mayama
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Mar 30, 1979
Inventors
Hideyasu Ohta
Jun Shirasaki
Masaru Kanbe
Naoto Abe
Takahiro Uozumi
Masayoshi Mayama
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.