Granted Patent
Utility
US 4,668,827 · App. 06/825,787
Process for preparing 2-(1-hydroxyalkyl) cyclohexanone and/or 2-alkylidene cyclohexanone
Inventors:
Mitsuhiko Tamura, Haruo Katsumata, Kiyoharu Urakawa, Yoshiaki Ohtani
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Feb 4, 1986
Inventors
Mitsuhiko Tamura
Haruo Katsumata
Kiyoharu Urakawa
Yoshiaki Ohtani
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.