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:
Oct. 17, 1995
Filed:
Oct. 29, 1993
Naoto Okubo, Tokuyama, JP;
Yoshihiro Uematsu, Kudamatsu, JP;
Katsuhisa Miyakusu, Shinnanyo, JP;
Takashi Igawa, Yamaguchi, JP;
Yukio Oda, Shinnanyo, JP;
Yukito Nomura, Koga, JP;
Koichi Satake, Koga, JP;
Juichi Ozawa, Satte, JP;
Nisshin Steel Co., Ltd., Tokyo, JP;
Sanoh Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A multifold pipe made by multiple rolling up and turning of a copper coated steel sheet into a multifold pipe, characterized in that said steel sheet is a cold rolled sheet of a super soft austenitic stainless steel comprising by weight: up to 0.05% of C, up to 1.0% of Si, up to 5.0% of Mn, from 9.0% to 15.0% of Ni, from 15.0% to 20.0% of Cr, up to 0.04% of N, up to 5.0% of Cu, the balance being Fe and unavoidable impurities, wherein the alloying elements are further adjusted so that both the two relations (1) and (2) noted below are satisfied: