Granted Patent
Utility
US 6,613,823 · App. 09/176,125
Phosphite additives in polyolefins
Inventors:
David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Oct 21, 1998
Inventors
David R. Battiste
Mark K. Russell
William R. Coutant
Joseph R. Harder
Assignee (at issue)
Phillips Petroleum Company
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.