Granted Patent
Utility
US 4,599,465 · App. 06/741,361
Process for producing orthoalkylphenols
Inventors:
Akio Tamaru, Yoshiaki Izumisawa, Hidekichi Hashimoto, Kiyoji Kuma, Takashi KOMAYA, Masanobu Minagawa
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Jun 5, 1985
Inventors
Akio Tamaru
Yoshiaki Izumisawa
Hidekichi Hashimoto
Kiyoji Kuma
Takashi KOMAYA
Masanobu Minagawa
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.