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. 22, 1981
Filed:
Oct. 02, 1980
Applicant:
Inventors:
Kazumasa Ohtsuka, Yokohama, JP;
Michihiko Takahashi, Kashiwa, JP;
Masako Araki, Tokyo, JP;
Zen Mitsui, Higashikanamachi, JP;
Assignee:
Nippi, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A23J / ; C07G / ; C09H / ;
U.S. Cl.
CPC ...
260117 ; 2601 / ; 260118 ; 2601237 ; 424 85 ; 424177 ;
Abstract
A method for removing antigenicity from peptide derived from a collagen-containing material or gelatin by hydrolyzing it with aid of an inorganic acid is disclosed. The method is carried out by passing the peptide through a mixture of a cation-exchange resin and an anion-exchange resin. The thus treated peptide may be further passed through a membrane for ultrafiltration to remove pyrogenous substances completely. The peptide obtained is useful as an additive, diluent or carrier for cosmetic articles or drugs.