Granted Patent
Utility
US 4,818,439 · App. 06/824,193
PTC compositions containing low molecular weight polymer molecules for reduced annealing
Inventors:
Brian D. Blackledge, William M. Rowe, Jr.
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Jan 30, 1986
Inventors
Brian D. Blackledge
William M. Rowe, Jr.
Assignee (at issue)
Sunbeam Corporation Limited
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.