Granted Patent
Utility
US 4,225,708 · App. 06/068,518
2-Sulfamoyl-5-sulfamido-1-naphthols
Inventors:
Masaru Kanbe, Kazumasa Watanabe, Morito Uemura, Jiro Takahashi, Ryuichiro Kobayashi, Tatsuhiko Kobayashi
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Aug 22, 1979
Inventors
Masaru Kanbe
Kazumasa Watanabe
Morito Uemura
Jiro Takahashi
Ryuichiro Kobayashi
Tatsuhiko Kobayashi
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.