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:
Jul. 11, 1995
Filed:
Aug. 21, 1991
Linda S Plano, Durham, NC (US);
Michael G Peters, Santa Clara, CA (US);
Kramadhati V Ravi, Atherton, CA (US);
John M Pinneo, Redwood City, CA (US);
Crystallume, San Jose, CA (US);
Abstract
A continuous thin diamond film having a thickness of less than about 2 microns has a permeability to helium lower than about 1.times.10.sup.-6 standard cubic centimeters of helium per second per square millimeter of surface area. The thin diamond film may be supported on a supporting grid and may be incorporated into an x-ray window. The thin diamond film of the present invention may be formed in a two-stage growth process wherein a first stage a carbonaceous gas at a first concentration is introduced in to the reactor and in a second stage the concentration of the carbonaceous gas is reduced to a second lower concentration.