Granted Patent
Utility
US 6,805,423 · App. 10/413,398
System and method for controlling gradation
Inventors:
Takeo Miyajima, Kei Suzuki, Mitsuhiro Igarashi, Masami Kawamori
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Apr 15, 2003
Inventors
Takeo Miyajima
Kei Suzuki
Mitsuhiro Igarashi
Masami Kawamori
Assignee (at issue)
NEC INFRONTIA 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.