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. 25, 2014
Filed:
Aug. 23, 2011
Takumi Hijii, Toyota, JP;
Naoki Nishikawa, Miyoshi, JP;
Akio Kawaguchi, Shizuoka-ken, JP;
Koichi Nakata, Mishima, JP;
Yoshifumi Wakisaka, Nagoya, JP;
Hidemasa Kosaka, Nisshin, JP;
Fumio Shimizu, Toyota, JP;
Takumi Hijii, Toyota, JP;
Naoki Nishikawa, Miyoshi, JP;
Akio Kawaguchi, Shizuoka-ken, JP;
Koichi Nakata, Mishima, JP;
Yoshifumi Wakisaka, Nagoya, JP;
Hidemasa Kosaka, Nisshin, JP;
Fumio Shimizu, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
An internal combustion engine in which an anodic oxidation coating film is formed on all or a portion of a wall that faces a combustion chamber, wherein the anodic oxidation coating film has a structure that is provided with a bonding region in which each of hollow cells forming the coating film is bonded to the adjacent hollow cells, and a nonbonding region in which three or more adjacent hollow cells are not bonded to each other, and wherein a porosity of the anodic oxidation coating film is determined by a first void present in the hollow cell and a second void that forms the nonbonding region.