Granted Patent
Utility
US 6,509,178 · App. 09/230,212
Process for preparing docosahexaenoic acid and docosapentaenoic acid with ulkenia
Inventors:
Satohiro Tanaka, Toshiaki Yaguchi, Sakayu Shimizu, Tsutomu Sogo, Shigeaki Fujikawa
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: May 3, 1999
Inventors
Satohiro Tanaka
Toshiaki Yaguchi
Sakayu Shimizu
Tsutomu Sogo
Shigeaki Fujikawa
Assignees (at issue)
SUNTORY HOLDINGS LIMITED
NAGASE & CO., LTD.
Nagase ChemteX Corporation
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.