Granted Patent
Utility
US 4,755,616 · App. 07/024,967
4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same
Inventors:
Tohru Miura, Teruyuki Nagata
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Mar 12, 1987
Inventors
Tohru Miura
Teruyuki Nagata
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.