Granted Patent
Utility
US 5,800,599 · App. 08/896,000
Emulsion ink for stencil printing
Inventor:
Keisuke Asada
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Jul 17, 1997
Inventor
Keisuke Asada
Assignee (at issue)
Tohoku Ricoh 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.