Granted Patent
Utility
US 6,136,875 · App. 09/276,332
High productivity, low fugitive emission foams and foam processes
Inventors:
Wen P. Wu, Gary A. Francis
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Mar 25, 1999
Inventors
Wen P. Wu
Gary A. Francis
Assignee (at issue)
Tenneco Packaging 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.