Granted Patent
Utility
US 4,950,330 · App. 07/405,063
Aqueous dispersion of a developer for pressure-sensitive recording sheet and a process for producing the same
Inventors:
Toranosuke Saito, Shouichi Murata, Eiji Kawabata, Tomoharu Shiozaki, Tetsuo Shiraishi
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Sep 7, 1989
Inventors
Toranosuke Saito
Shouichi Murata
Eiji Kawabata
Tomoharu Shiozaki
Tetsuo Shiraishi
Assignees (at issue)
Sanko Kaihatsu Kagaku Kenkyusho
Kanzaki 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.