Granted Patent
Utility
US 6,043,050 · App. 09/219,515
Biological process for producing steroids hydroxylated at the 25-position
Inventors:
Koji Takeda, Tadashi Terasawa, Kazuyuki Dobashi, Takeo Yoshioka
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Dec 23, 1998
Inventors
Koji Takeda
Tadashi Terasawa
Kazuyuki Dobashi
Takeo Yoshioka
Assignees (at issue)
Mercian Corporation
CHUGAI SEIYAKU KABUSHIKI KAISHA
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.