Granted Patent
Utility
US 5,242,885 · App. 07/879,119
Pressure sensitive recording sheet with a layer containing microcapsules each containing color former and benzyl toluene
Inventors:
Kazuyuki Shinmitsu, Masanao Tajiri, Shunsuke Shioi
Patented Case
View Patent ↗
Granted: Sep 7, 1993
Filed: May 5, 1992
Inventors
Kazuyuki Shinmitsu
Masanao Tajiri
Shunsuke Shioi
Assignee (at issue)
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.