Granted Patent
Utility
US 4,943,528 · App. 07/438,124
Process for the production of optically active (R)-(-)-3-halo-1,2-propanediol
Inventors:
Tetsuji Nakamura, Ichiro Watanabe
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Nov 20, 1989
Inventors
Tetsuji Nakamura
Ichiro Watanabe
Assignee (at issue)
Nitto Chemical Industry 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.