Granted Patent
Utility
US 6,524,348 · App. 09/641,276
Method of making carboxylated cellulose fibers and products of the method
Inventors:
Richard A. Jewell, Joseph Lincoln Komen, Bing Su, S. Ananda Weerawarna, Yong Li
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Aug 17, 2000
Inventors
Richard A. Jewell
Joseph Lincoln Komen
Bing Su
S. Ananda Weerawarna
Yong Li
Assignee (at issue)
Weyerhaeuser NR 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.