Granted Patent
Utility
US 4,660,057 · App. 06/838,442
Heater power controller for ink jet printer
Inventors:
Masato Watanabe, Yasuhiko Tanaka, Kiyotaka Murakami
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Mar 10, 1986
Inventors
Masato Watanabe
Yasuhiko Tanaka
Kiyotaka Murakami
Assignee (at issue)
Konishiroku Photo Industry 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.