Granted Patent
Utility
US 4,879,166 · App. 07/216,016
Carrier medium for a coloring matter
Inventors:
Katsutoshi Misuda, Takafumi Hasegawa
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Jul 7, 1988
Inventors
Katsutoshi Misuda
Takafumi Hasegawa
Assignee (at issue)
ASAHI GLASS 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.