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:
Jan. 06, 1998
Filed:
Sep. 29, 1995
Applicant:
Inventors:
Robert A Blanchette, Shoreview, MN (US);
Sara Iverson, Lexington, MA (US);
Chad J Behrendt, St. Paul, MN (US);
Assignee:
Clariant Finance (BVI) Limited, Tortola, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ; D21C / ; C12N / ; C12P / ;
U.S. Cl.
CPC ...
435278 ; 162-9 ; 162 72 ; 162D / ; 435171 ; 4352541 ; 435267 ; 435277 ; 435911 ;
Abstract
The present invention relates to the use of certain fungi in the reduction of the pitch and/or lignin content of cellulosic materials. In particular, the white rot fungi Schizophyllum commune, Trichaptum biforme and Phanerochaete gigantea are useful in reducing pitch and/or lignin, or both, which saves electrical energy during the mechanical refining of pulps and pulpwoods used in making cellulosic products.