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:
Apr. 21, 2026
Filed:
Jun. 29, 2022
Sumitomo Electric Hardmetal Corp., Itami, JP;
Yusuke Makiuchi, Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A drill includes a flank face, a rake face, and a main cutting edge on a ridgeline between the rake face and the flank face. The main cutting edge has a first curved portion having a curved shape contiguous with the flank face and a second curved portion having a curved shape contiguous with the rake face in a sectional view orthogonal to an extending direction of the main cutting edge. A first curvature radius of the first curved portion is larger than a second curvature radius of the second curved portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile