Granted Patent
Utility
US 6,376,059 · App. 09/241,350
Polyethylene foams and methods of their production
Inventors:
Jere R. Anderson, Kelvin T. Okamoto
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Feb 2, 1999
Inventors
Jere R. Anderson
Kelvin T. Okamoto
Assignee (at issue)
Trexel, 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.