Granted Patent
Utility
US 4,444,679 · App. 06/399,518
Blowing agent compositions
Inventors:
Donald G. Rowland, Rhomie L. Heck, III
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Jul 19, 1982
Inventors
Donald G. Rowland
Rhomie L. Heck, III
Assignee (at issue)
Uniroyal 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.