Granted Patent
Utility
US 5,136,042 · App. 07/465,167
Process for the preparation of thiazolecarboxylic acid chlorides
Inventors:
Toshiaki Kuwatsuka, Seiichi Watanabe, Yoshinori Tanaka, Toshiyuki Kouno, Katsutoshi Ishikawa
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Feb 1, 1990
Inventors
Toshiaki Kuwatsuka
Seiichi Watanabe
Yoshinori Tanaka
Toshiyuki Kouno
Katsutoshi Ishikawa
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.