Granted Patent
Utility
US 6,800,669 · App. 10/021,774
Propylene copolymer foams
Inventors:
Johan A. Thoen, Chuiwah Alice Cheung, Bharat I. Chaudhary
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Dec 12, 2001
Inventors
Johan A. Thoen
Chuiwah Alice Cheung
Bharat I. Chaudhary
Assignee (at issue)
Dow Global Technologies 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.