Granted Patent
Utility
US 4,879,411 · App. 07/219,781
Method for racemization of optically active serine
Inventors:
Ken-ichi Ishiwata, Takeshi Nakamura, Nobuyoshi Makiguchi, Shoichiro Miyahara, Toshio Matsumoto, Kazunari Nitta
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Jul 18, 1988
Inventors
Ken-ichi Ishiwata
Takeshi Nakamura
Nobuyoshi Makiguchi
Shoichiro Miyahara
Toshio Matsumoto
Kazunari Nitta
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.