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. 29, 2011
Filed:
May. 25, 2006
Akira Shibuya, Kawasaki, JP;
Shinichi Yorozuya, Kawasaki, JP;
Makoto Saito, Kawasaki, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
Disclosed is an agent for permanent hair waving that can realize permanent hair waving even in the neutral to weakly acidic pH range in which irritation particularly to the skin is not significant. The agent for permanent hair waving includes at least one heterocyclic mercapto compound represented by formula (1): wherein Rand Reach independently represent a hydrogen atom or an optionally substituted alkyl group having 1 to 5 carbon atoms; X represents —O—, —S—, —NH—, or —NR—; Rrepresents an alkyl group having 1 to 5 carbon atoms; n is an integer of 0 to 2; and, when n is 2, group SH may be attached to any carbon atom of an alkylene group having 2 carbon atoms.