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. 20, 2018
Filed:
Oct. 22, 2014
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi-ken, JP;
Advanced Laser Technology Research Center Co. Ltd., Anjo-shi, Aichi-ken, JP;
Takuya Niimi, Handa, JP;
Akihiro Okamoto, Nishio, JP;
Keiki Sugano, Aichi-ken, JP;
Ryo Okazaki, Kariya, JP;
Muneharu Kutsuna, Anjo, JP;
Kiyotaka Saito, Aichi-ken, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi-Ken, JP;
ADVANCED LASER TECHNOLOGY RESEARCH CENTER CO., LTD., Anjo-Shi, Aichi-Ken, JP;
Abstract
This piston includes a piston main body made of aluminum or an aluminum alloy, used in an internal combustion and a modified layer formed on a surface of a strength reinforced portion of the piston main body, having a surface made of aluminum oxide by plasma oxidation, to which compressive residual stress is applied.