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:
Sep. 15, 2026
Filed:
Dec. 05, 2023
Korloy Inc., Seoul, KR;
Seung Su Ahn, Cheongju-si, KR;
Je Hun Park, Cheongju-si, KR;
Yeong Ju Jo, Cheongju-si, KR;
Ji Woong Kim, Cheongju-si, KR;
Myung Jae Kim, Cheongju-si, KR;
Hyo Kyeong Kim, Cheongju-si, KR;
KORLOY INC., Seoul, KR;
Abstract
The purpose of the invention is to provide a hard coating for cutting tools, wherein the hard coating is excellent in wear resistance and oxidation resistance, as well as in hardness properties. In order to achieve the purpose, the invention may provide a cutting tool which includes as hard substrate and a hard coating formed on the hard substrate, wherein the hard coating has a structure in which a first sub-coating having a composition range represented by [Formula 1] below and having a cubic structure, and a second sub-coating having a composition range represented by [Formula 2] below and having a cubic structure are alternately stacked.AlMnN(0.005≤≤0.1) [Formula 1]MeN(Here, Me includes one or more selected among Ti, Cr, Zr, Hf, V, Nb, Ta, Mo, and Al) [Formula 2]