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. 21, 1981
Filed:
Sep. 25, 1979
Applicant:
Inventors:
Issei Yoshioka, Hirakata, JP;
Yoichi Kamimura, Osaka, JP;
Assignee:
Seiwa Kasei Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435 69 ; 435272 ; 424 70 ; 424 72 ;
Abstract
Water-soluble keratin hydrolyzate having at least two mercapto groups in one molecule and having an average molecular weight of 2,000 to 20,000, suitable for cosmetic application to the hair, particularly as hair fixatives. The hydrolyzate is prepared by reducing keratin in an aqueous solution of a reducing agent under alkaline conditions and subjecting the resulting reduction product to enzymatic hydrolysis.