The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2007
Filed:
Mar. 18, 2002
Masood Akhtar, Madison, WI (US);
Ross E. Swaney, Madison, WI (US);
Eric G. Horn, Madison, WI (US);
Michael J. Lentz, Madison, WI (US);
Gary M. Scott, Syracuse, NY (US);
Cory C. Black, Gurnee, IL (US);
Carl J Houtman, Madison, WI (US);
T. K. Kirk, Verona, WI (US);
Masood Akhtar, Madison, WI (US);
Ross E. Swaney, Madison, WI (US);
Eric G. Horn, Madison, WI (US);
Michael J. Lentz, Madison, WI (US);
Gary M. Scott, Syracuse, NY (US);
Cory C. Black, Gurnee, IL (US);
Carl J Houtman, Madison, WI (US);
T. K. Kirk, Verona, WI (US);
Biopulping International, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
The present invention is a method for producing pulp from fibrous lignocellulose material using a treatment step which exposes the material to oxalic acid, or oxalic acid and sodium bisulfite, prior to pulping. The pulping of the resulting product requires less energy input and provides a pulp having enhanced physical properties as compared to untreated materials.