Granted Patent
Utility
US 4,511,642 · App. 06/465,084
Photo-fixing heat-sensitive recording media with photosensitive diazonium salt, coupler, and organic boron salt
Inventors:
Kensaku Higashi, Haruhiko Yano, Hirotsugu Sato, Ken Sukegawa, Yuji Ooba
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Feb 9, 1983
Inventors
Kensaku Higashi
Haruhiko Yano
Hirotsugu Sato
Ken Sukegawa
Yuji Ooba
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
Tomoegawa Paper Manufacturing 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.