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:
Mar. 16, 2004
Filed:
Nov. 02, 2002
Applicant:
Inventor:
Mats Sundberg, Västerås, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/10 ;
U.S. Cl.
CPC ...
H05B 3/10 ;
Abstract
A method of lengthening the useful life of heating elements that are formed essentially from molybdenum silicide and molybdenum tungsten silicide and different alloys of those basic materials, at times when the elements are operated at a relatively low temperature, such as a temperature in the range of 400-800° C. The gaseous atmosphere surrounding the elements as they operate has a water content that is less than about one percent by volume.