Granted Patent
Utility
US 4,594,225 · App. 06/775,709
Elements for analysis of calcium
Inventors:
Kazumi Arai, Mikio Koyama, Kenichiro Okaniwa
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Sep 13, 1985
Inventors
Kazumi Arai
Mikio Koyama
Kenichiro Okaniwa
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.