Granted Patent
Utility
US 4,192,647 · App. 05/809,896
Print paste formulations with hydroxyalkyl carboxyalkyl cellulose
Inventors:
William C. Kuryla, Russell H. Raines
Patented Case
View Patent ↗
Granted: Mar 11, 1980
Filed: Jun 24, 1977
Inventors
William C. Kuryla
Russell H. Raines
Assignee (at issue)
Union Carbide 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.