Granted Patent
Utility
US 6,485,867 · App. 09/702,598
Use of lignins in thermoplastics
Inventors:
Jaime Navarrete, A. Jeff Chapman, Chetan J. Parikh, Roy T. Toomey
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Oct 31, 2000
Inventors
Jaime Navarrete
A. Jeff Chapman
Chetan J. Parikh
Roy T. Toomey
Assignee (at issue)
DARAMIC, 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.