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:
Oct. 28, 1997
Filed:
May. 11, 1995
Applicant:
Inventors:
Mark S Hammond, Houston, TX (US);
Joseph D Evans, Lafayette, CO (US);
Assignee:
SI Diamond Technology, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24P / ;
U.S. Cl.
CPC ...
428336 ; 428408 ; 428403 ; 428698 ; 428704 ;
Abstract
Single hard particles or single point cutting tools having the particles bonded thereto are coated with a modulated or layered composition of transition metal compounds or with titanium compounds to decrease mechanical failure of the particles. Titanium and zirconium nitrides may be used to form the modulated composition. Total thickness of the coatings is in the range from about 0.5 micrometer to about 30 micrometers. Individual layers of varying composition have a thickness in the range from about 0.5 nanometers to about 30 nanometers.