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:
Jun. 02, 2015
Filed:
Feb. 05, 2007
Masayuki Kyomoto, Tokyo, JP;
Toru Moro, Tokyo, JP;
Kazuhiko Ishihara, Tokyo, JP;
Tomohiro Konno, Tokyo, JP;
Kozo Nakamura, Tokyo, JP;
Yoshio Takatori, Tokyo, JP;
Hiroshi Kawaguchi, Tokyo, JP;
Hiroaki Takadama, Aichi, JP;
Makoto Kondo, Osaka, JP;
Noboru Yamawaki, Osaka, JP;
Takeshi Nizuka, Osaka, JP;
Masami Hashimoto, Aichi, JP;
Masayuki Kyomoto, Tokyo, JP;
Toru Moro, Tokyo, JP;
Kazuhiko Ishihara, Tokyo, JP;
Tomohiro Konno, Tokyo, JP;
Kozo Nakamura, Tokyo, JP;
Yoshio Takatori, Tokyo, JP;
Hiroshi Kawaguchi, Tokyo, JP;
Hiroaki Takadama, Aichi, JP;
Makoto Kondo, Osaka, JP;
Noboru Yamawaki, Osaka, JP;
Takeshi Nizuka, Osaka, JP;
Masami Hashimoto, Aichi, JP;
KYOCERA MEDICAL CORPORATION, Osaka, JP;
Abstract
The present invention provides a bearing material that is excellent in durability and is capable of maintaining wear resistance over a long period of time. The bearing material of the present invention is a high wear-resistance bearing materialfor being used under a humid environment comprising: a base bodymade of a polymer material having a methylene group; and a polymer layercovering a bearing surfaceof the substrate, the polymer layercomprising polymer chains which have a phosphorylcholine group and are grafted from the bearing surface, wherein a phosphoric index of the sliding surfacewhich is calculated by dividing a peak intensity of phosphate group in an infrared spectrum measured on the sliding surface by a peak intensity of the methylene group therein is not less than 0.28.