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. 08, 2005
Filed:
Jun. 11, 2002
Haruyo Fukui, Itami, JP;
Yoshiharu Utsumi, Itami, JP;
Miki Irie, Itami, JP;
Hisanori Ohara, Itami, JP;
Hideki Moriguchi, Itami, JP;
Satoru Kukino, Itami, JP;
Makoto Setoyama, Kyoto, JP;
Satoshi Ohtani, Kyoto, JP;
Naoto Okazaki, Kyoto, JP;
Kiyoshi Ogata, Kyoto, JP;
Haruyo Fukui, Itami, JP;
Yoshiharu Utsumi, Itami, JP;
Miki Irie, Itami, JP;
Hisanori Ohara, Itami, JP;
Hideki Moriguchi, Itami, JP;
Satoru Kukino, Itami, JP;
Makoto Setoyama, Kyoto, JP;
Satoshi Ohtani, Kyoto, JP;
Naoto Okazaki, Kyoto, JP;
Kiyoshi Ogata, Kyoto, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
Amorphous carbon coated tools include substrates formed from a cubic boron nitride sintered body, a diamond sintered body, a silicon nitride sintered body, or an aluminum oxide-titanium carbide sintered body, and amorphous carbon films thereon to make the cutting edges of the tools. The amorphous carbon films contain hydrogen at 5 atomic percent or below and have a maximum thickness of 0.05 μm to 0.5 μm on the cutting edges. The amorphous carbon films are most suitable for applications to cutting tools exemplified by cutters, knives, and slitters, and to indexable inserts used for example in turning tools including drills, endmills, and reamers, and milling cutters.