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:
Jun. 04, 1991
Filed:
Oct. 29, 1990
Sandra L Madden, Lynnfield, MA (US);
Mark D Beschle, Beverly, MA (US);
Roy C Martin, Peabody, MA (US);
GTE Products Corporation, Danvers, MA (US);
Abstract
A quartz lamp envelope includes a press seal, at least one molybdenum foil feedthrough extending through the press seal to the lamp interior, and an external electrical lead connected to the molybdenum foil. The molybdenum foil has an oxidation-inhibiting material, such as chromium, aluminum and combinations thereof, embedded in a surface layer thereof by ion implantation. The electrical lead has an oxidation-inhibiting coating, such as silicon carbide, silicon nitride and combinations thereof, formed by plasma-enhanced chemical vapor deposition. Alternatively, the electrical lead can have an oxidation-inhibiting material embedded in a surface layer thereof by ion implantation.