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, 1984
Filed:
May. 19, 1982
Applicant:
Inventors:
Donal F Day, Baton Rouge, LA (US);
Wesley E Workman, Baton Rouge, LA (US);
Assignee:
Research Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12R / ; C12R / ;
U.S. Cl.
CPC ...
435 99 ; 435209 ; 435815 ; 435913 ; 435945 ;
Abstract
Cellulose is converted to glucose in a two stage process in which cellobiose is produced from a cellulosic feedstock under the influence of Trichoderma reesei in a first stage and cellobiose from the first stage is converted to glucose in a second stage by the action of purified cellobiase derived from Aspergillus terreus. Cellobiase from A. terreus is purified by contacting a crude aqueous extract of the cellobiase with an ion exchange resin and an anion exchange resin. The purified cellobiase may be immobilized on a suitable substrate.