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. 20, 2001
Filed:
Mar. 25, 1999
Applicant:
Inventor:
Jerry W. Zimmer, Saratoga, CA (US);
Assignee:
SP, Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 9/00 ;
U.S. Cl.
CPC ...
B32B 9/00 ;
Abstract
The invention relates to diamond coatings and the growth of diamond coatings suitable for tools, wear parts, and the like. The invention produces polycrystalline coatings having progressively finer grain size in the direction of the outer surface, which enhance the wear resistance and finish characteristics of the parts and tools. In one embodiment, chemical vapor deposition grows a first region over a substrate with a plurality of nucleation sites and the first region transitions into polycrystalline diamond grains growing progressively smaller to an average grain size of less than three microns.