Granted Patent
Utility
US 6,225,474 · App. 09/485,861
Polymorphs of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid and method of producing the same
Inventors:
Koichi Matsumoto, Kenzo Watanabe, Toshiyuki Hiramatsu, Mitsutaka Kitamura
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Feb 17, 2000
Inventors
Koichi Matsumoto
Kenzo Watanabe
Toshiyuki Hiramatsu
Mitsutaka Kitamura
Assignee (at issue)
TEIJIN LIMITED
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.