Granted Patent
Utility
US 4,985,575 · App. 07/475,801
Process for preparing optically active tetrahydro-2-furoic acid
Inventors:
Masaji Ishiguro, Hiromitsu Iwata, Takashi Nakatsuka, Kiyoharu Nakayama, Osamu Miyahara, Kenichi Noguchi
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Feb 6, 1990
Inventors
Masaji Ishiguro
Hiromitsu Iwata
Takashi Nakatsuka
Kiyoharu Nakayama
Osamu Miyahara
Kenichi Noguchi
Assignees (at issue)
SUNTORY HOLDINGS LIMITED
Nippon Soda 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.