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:
Jan. 22, 2008
Filed:
May. 18, 2004
Applicants:
Hiroyasu Saka, Aichi, JP;
Won-jin Mooni, Daejeon, JP;
Shouji Uchimura, Aichi, JP;
Toshiro Ito, Aichi, JP;
Inventors:
Hiroyasu Saka, Aichi, JP;
Won-Jin Mooni, Daejeon, JP;
Shouji Uchimura, Aichi, JP;
Toshiro Ito, Aichi, JP;
Assignees:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24D 3/02 (2006.01); C09C 1/68 (2006.01); C09K 3/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ceramics sintered material cutting tool, characterizing in that it has a dislocation structure which formed on the surface thereof in a straight line from and distributed uniformity in a dislocation density of 1×10to 9×10cm. The cutting tool is improved in a fracture toughness value and the resistance to thermal shock and thus has a prolonged life. The above cutting tools include, in particular, a twist drill and a throw away tip.