Granted Patent
Utility
US 5,204,250 · App. 07/588,473
Process for production of arachidonic acid
Inventors:
Yoshifumi Shinmen, Hideaki Yamada, Sakayu Shimizu
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Sep 26, 1990
Inventors
Yoshifumi Shinmen
Hideaki Yamada
Sakayu Shimizu
Assignee (at issue)
SUNTORY HOLDINGS LIMITED
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.