Granted Patent
Utility
US 4,299,630 · App. 05/791,380
Infrared absorptive jet printing ink
Inventor:
Ki-Sup Hwang
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Apr 27, 1977
Inventor
Ki-Sup Hwang
Assignee (at issue)
The Mead Corporation
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.