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:
Aug. 31, 1999
Filed:
Dec. 10, 1997
Gerald T Mearini, Richmond Heights, OH (US);
Robert E Kusner, Solon, OH (US);
BAV Technologies, Ltd., Cleveland, OH (US);
Abstract
A process for depositing diamond crystals onto a field emission cathode. The process involves providing a cathode having a substrate, a gate layer and a plurality of emitters electrically insulated from the gate layer. An electric bias is applied to the gate layer and a ground potential is applied to the emitters. A heat source is positioned adjacent the cathode, and the cathode is exposed to a field of ions for a sufficient period to at least partially clean the emitters. A carbon containing gas is added to the atmosphere adjacent to the cathode such that carbon ions are dissociated from the gas and deposited on the emitters to form a 'soot'. The temperature of the cathode is then adjusted to a level which allows formation of diamond film.