Granted Patent
Utility
US 6,716,306 · App. 10/160,700
High bulk cellulose fibers crosslinked with tartaric acid and method of making same
Inventors:
Richard A. Jewell, Amar N. Neogi
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: May 30, 2002
Inventors
Richard A. Jewell
Amar N. Neogi
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.