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:
Mar. 19, 2019
Filed:
May. 28, 2015
Kobe Steel, Ltd., Kobe-shi, JP;
Jun Suzuki, Hyogo, JP;
Toshiki Sato, Hyogo, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A process for producing a separator material suitable for fuel cells, wherein the separator includes a pure titanium or a titanium alloy as a base material. The method comprises an application step and a heat treatment step. The application step is a step of applying a carbon black to a surface of the base material which has a carbon concentration, at a position located at a depth of 10 nm from an outermost surface, of 10 atom % or less. The heat treatment step subjects the base material, which has undergone the application step, to a heat treatment in a low-partial-oxygen-pressure atmosphere having a partial oxygen pressure of 0.0667 Pa or more and 25 Pa or less.