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. 13, 1979
Filed:
Dec. 14, 1977
Applicant:
Inventors:
Herbert M Strong, Schenectady, NY (US);
Richard M Chrenko, Scotia, NY (US);
Roy E Tuft, Guilderland Center, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423446 ; 51307 ;
Abstract
Type Ib synthetic diamond crystal is annealed at an annealing temperature ranging from about 1500.degree. C. to about 2200.degree. C. under a pressure which prevents significant graphitization of the diamond during the annealing to convert at least about 20% of the total amount of type Ib nitrogen present in the crystal to type Ia nitrogen.