Granted Patent
Utility
US 6,642,339 · App. 09/695,915
Low density copolymers of ethylene and alpha-olefins
Inventors:
Choon Kooi Chai, Christopher James Frye
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Oct 26, 2000
Inventors
Choon Kooi Chai
Christopher James Frye
Assignee (at issue)
BP Chemicals Limited
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.