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:
Apr. 06, 1999
Filed:
Nov. 18, 1997
Norio Yuki, Kanagawa-ken, JP;
Yoshihisa Kita, Kanagawa-ken, JP;
Nippon Mining & Metals Co., Ltd., Tokyo, JP;
Abstract
Fe--Ni alloys for electron gun parts consisting of, all by weight, 30-55% Ni, 0.0010-0.200% S, up to 0.8% Mn, from not less than 0.005 to less than 0.5% in total of one or more elements selected from the group consisting of Ti, Mg, Ce and Ca, and the balance substantially Fe and unavoidable impurities, and electron gun parts, typically electron gun electrodes, made of the alloys by punching are provided. Controlling the grain size number to No. 7.0 or above is also effective. The Fe--Ni alloys of this invention for electron gun parts are remarkably improved in press punchability and can solve burring problems through the easy formation of sulfide inclusions of Ti, Mg, Ce, and Ca.