Granted Patent
Utility
US 4,734,229 · App. 06/861,047
Method for calendering temperature-critical thermoplastic material using a two-phase heat transfer medium
Inventors:
Peter E. Johnson, James Young
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: May 8, 1986
Inventors
Peter E. Johnson
James Young
Assignee (at issue)
Entek Manufacturing LLC
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.