Granted Patent
Utility
US 6,231,785 · App. 09/404,141
Benzene derivative and its production method
Inventors:
Tomoyuki Kondo, Katsuhiko Kobayashi, Shuichi Matsui, Hiroyuki Takeuchi
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Sep 27, 1999
Inventors
Tomoyuki Kondo
Katsuhiko Kobayashi
Shuichi Matsui
Hiroyuki Takeuchi
Assignee (at issue)
Chisso 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.