Granted Patent
Utility
US 5,063,133 · App. 07/659,471
Electrophotographic developing system comprising toner having specific particle size distribution
Inventors:
Tsutomu Kubo, Kazuo Terao, Takashi Yamamuro, Masashi Kajimoto, Kazuhiko Tsukagoshi
Patented Case
View Patent ↗
Granted: Nov 5, 1991
Filed: Feb 25, 1991
Inventors
Tsutomu Kubo
Kazuo Terao
Takashi Yamamuro
Masashi Kajimoto
Kazuhiko Tsukagoshi
Assignee (at issue)
FUJI XEROX 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.