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:
Feb. 14, 1995
Filed:
Oct. 01, 1992
Laurence Bigio, Schenectady, NY (US);
Joseph M Ranish, Cleveland Heights, OH (US);
Clyde L Briant, Charlton, NY (US);
Ronald H Wilson, Schenectady, NY (US);
John F Ackerman, Cheyenne, WY (US);
General Electric Company, Schenectady, NY (US);
Abstract
The invention refers to a filament having improved emission of visible light. The emissivity of a tungsten filament is improved by depositing a layer of submicron-to-micron crystallites on the filament, the layer having substantially submicron spacing between crystallites. The crystallites being formed from tungsten or a tungsten alloy of up to 1 weight percent thorium, up to 10 weight percent of at least one of rhenium, tantalum, or niobium, and the balance substantially tungsten.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile