Granted Patent
Utility
US 4,491,432 · App. 06/454,814
Chemical heat amplification in thermal transfer printing
Inventors:
Ari Aviram, Kwang K. Shih
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Dec 30, 1982
Inventors
Ari Aviram
Kwang K. Shih
Assignee (at issue)
International Business Machines 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.