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. 01, 2022
Filed:
Dec. 16, 2016
Nippon Itf, Inc., Kyoto, JP;
Nippon Piston Ring Co., Ltd., Saitama, JP;
Hideki Moriguchi, Kyoto, JP;
Akinori Shibata, Kyoto, JP;
Takehiko Ooshiro, Kyoto, JP;
Yoshihiro Ito, Saitama, JP;
Takahiro Okazaki, Saitama, JP;
Hiroyuki Sugiura, Saitama, JP;
NIPPON ITF, INC., Kyoto, JP;
NIPPON PISTON RING CO., LTD., Saitama, JP;
Abstract
The purpose of the invention is to provide technology, which, in addition to being capable of forming thick hard carbon films of excellent durability even using PVD, is able to establish both chipping resistance and wear resistance in the formed hard carbon film and able to improve low friction properties and peeling resistance. Provided is a coating film to be coated on the surface of a substrate, the coating film having a total film thickness of greater than 1 μm to 50 μm wherein: when a cross-section is observed using bright field TEM images, white hard carbon layers that are shown as relatively white and black hard carbon layers that are shown as black are alternately laminated in the thickness direction; and the white hard carbon layers have regions that have grown in a fan-shape in the thickness direction.