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. 29, 1998
Filed:
Jun. 05, 1995
Robert A Blanchette, Shoreview, MN (US);
Roberta L Farrell, Danvers, MA (US);
Yitzhak Hadar, Rehovot, IL;
Johnnie E Merritt, II, Ashland, VA (US);
Robert A Snyder, Ashland, VA (US);
Philip A Wendler, Belmont, MA (US);
Wendy Zimmerman, Newton, MA (US);
Clariant Finance (BVI) Limited, Tortola, VG;
Abstract
Wood-penetrating fungi of the classes Ascomycotina and Deuteromycotina may be used very effectively to degrade pitch in wood forms used in the making of cellulosic products. Such fungi include but are not limited to the blue stain fungi. The process of Ascospore selection may be used to provide fungi which exhibit good growth on wood substrate while having little or no effects on substrate brightness, or even a positive effect on brightness. The treatment positively influences strength properties of ultimate products such as paper. In one embodiment the pulpwood or pulp is treated with a pitch degrading fungus of the genus Ophiostoma.