Granted Patent
Utility
US 4,390,882 · App. 06/318,538
Density adjusting method in image recording
Inventors:
Yuji Ohara, Kazuo Horikawa
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Nov 5, 1981
Inventors
Yuji Ohara
Kazuo Horikawa
Assignee (at issue)
Fujitsu Limited
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.