Granted Patent
Utility
US 6,153,794 · App. 09/348,586
Phosphine sulfide, a manufacturing process therefor and use thereof
Inventors:
Katsuhiko Funaki, Isao Hara, Takaomi Hayashi, Shinji Kiyono, Atsushi Shibahara, Kazumi Mizutani, Tadahito Nobori, Usaji Takaki
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Jul 7, 1999
Inventors
Katsuhiko Funaki
Isao Hara
Takaomi Hayashi
Shinji Kiyono
Atsushi Shibahara
Kazumi Mizutani
Tadahito Nobori
Usaji Takaki
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.