Granted Patent
Utility
US 5,245,088 · App. 07/846,996
Process for crystallizing adduct of bisphenol A with phenol
Inventors:
Shigeru Fimuro, Akira Yamada, Kenichi Ohmura
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Apr 7, 1992
Inventors
Shigeru Fimuro
Akira Yamada
Kenichi Ohmura
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.