Granted Patent
Utility
US 6,737,264 · App. 09/869,297
Method for purifying and isolating (2s,3s)- or (2r,3s)-halohydrin derivatives
Inventors:
Katsuji Maehara, Shigeru Kawano, Makoto Yamaguchi, Yasuyoshi Ueda
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Nov 2, 2001
Inventors
Katsuji Maehara
Shigeru Kawano
Makoto Yamaguchi
Yasuyoshi Ueda
Assignee (at issue)
KANEKA 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.