Granted Patent
Utility
US 5,874,570 · App. 08/013,197
Titanyloxyphthalocyanine crystals, and method of preparing the same
Inventors:
Shinichi Tamura, Youichi Tei, Naoki Itoh, Kazumi Egota, Kenichi Ohkura
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jan 26, 1998
Inventors
Shinichi Tamura
Youichi Tei
Naoki Itoh
Kazumi Egota
Kenichi Ohkura
Assignee (at issue)
FUJI ELECTRIC CO., 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.