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:
Dec. 16, 1986
Filed:
Nov. 20, 1984
William M Clark, Jr, Thousand Oaks, CA (US);
Charles M McKenna, Boxford, MA (US);
William L Johnson, Pasadena, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A liquid metal ion source alloy for high vapor pressure metalloids, wherein the alloy composition is chosen to have a low melting point so that the vapor pressure of the volatile constituents is low, even in the liquid state. Specifically, the ion source alloy is an alloy selected from the group of (Pb.sub.0.7-1.0 Au.sub.0.3-0).sub.0.7-0.99 (As+Sb).sub.0.3-0.01 and Pb.sub.0.20-0.30 Au.sub.0.45-0.55 (As+Sb).sub.0.20-0.30. The melting points of these alloys are about 200.degree. C.-300.degree. C., and the alloys may be maintained molten in contact with the emission elements for long periods of time without significant loss of the volatile species or reactivity with typical substrate materials used for emission elements.