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:
Jul. 27, 1993
Filed:
Jul. 23, 1991
Showa Denko K.K., Tokyo, JP;
Abstract
A cellulase having the following properties: (1) an optimum pH of from 9.5 to 10.5 as measured using carboxymethylcellulose as a substrate; (2) a stable pH of from 6 to 11 as measured using carboxymethylcellulose as a substrate after treating at 30.degree. C. and for 30 minutes; (3) an optimum temperature of about 55.degree. C. as measured using carboxymethylcellulose as a substrate; (4) influence of a surfactant being such that residual activity is 90% or more after treatment at 30.degree. C. and pH of 9.0 for 2 hours in the presence of a sodium n-alkylbenzenesulfonate; (5) a molecular weight of 52,000.+-.2,000 as measured by electrophoresis on SDS-polyacrylamide gel; and (6) an isoelectric point of 4.2.+-.0.2 as measured by isoelectric electrophoresis. The cellulase is produced by Bacillus sp. SD402, its mutant strains or its genetic engineered strains. An aid for detergents and a paper treating agent, respectively, contain the cellulase as an effective ingredient.