Granted Patent
Utility
US 4,430,436 · App. 06/329,034
Analytical element and method of use
Inventors:
Mikio Koyama, Shozo Kikugawa, Kenichiro Okaniwa, Kiyoshi Tamaki
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Dec 9, 1981
Inventors
Mikio Koyama
Shozo Kikugawa
Kenichiro Okaniwa
Kiyoshi Tamaki
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.