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:
Nov. 16, 1993
Filed:
May. 22, 1992
Isao Karube, Kawasaki, JP;
Takashi Morita, Tokyo, JP;
Akebono Brake Industry Co, Ltd., Tokyo, JP;
Akebono Research & Development Center Ltd., Saitama, JP;
Abstract
Chitin-containing material is heat-treated in organic solvent or in the solvent with water, and then .beta.-1, 4 glycoside decomposing enzyme is added for decomposing the chitin-containing material by enzyme reaction. Or, chitin-containing material is ultrasonicated in organic solvent or in the solvent with water, and then chitin-containing material is decomposed by enzyme reaction of .beta.-1, 4 glycoside decomposing enzyme. Further, chitin-containing material is exposed in the solution containing urea and/or surfactant, and then chitin-containing material is let co-exist with .beta.-1, 4 glycoside decomposing enzyme under the presence or non-presence of urea and/or surfactant for decomposing chitin-containing material. Or, at the time of exposing chitin-containing material in the solution containing urea and/or surfactant, the solution is heated and the .beta.-1, 4 glycoside decomposing enzyme is added for decomposing chitin-containing material.