Granted Patent
Utility
US 5,883,286 · App. 08/860,118
Phenol compound and use thereof
Inventors:
Takeshi Inoue, Kazuo Nakagawa, Yoshihiro Ozaki, Akiyoshi Onishi, Machiko Mekada
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Jun 19, 1997
Inventors
Takeshi Inoue
Kazuo Nakagawa
Yoshihiro Ozaki
Akiyoshi Onishi
Machiko Mekada
Assignees (at issue)
Yoshitomi Fine Chemicals, Ltd.
MITSUBISHI CHEMICAL 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.