Granted Patent
Utility
US 4,818,285 · App. 07/113,795
Ink jet printer ink composition and process for producing same
Inventors:
Gary C. Causley, Mary J. Peterson
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Oct 27, 1987
Inventors
Gary C. Causley
Mary J. Peterson
Assignee (at issue)
Tektronix, Inc.
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.