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:
Nov. 21, 1978
Filed:
Oct. 31, 1977
Thomas M Costello, Pittsburgh, PA (US);
Jerome P Bressanelli, Pittsburgh, PA (US);
Crucible Inc., Pittsburgh, PA (US);
Abstract
A high-temperature steel of chromium, nickel and tungsten modified with a lanthanum addition and balanced compositionally to provide a combination of good oxidation resistance and high temperature strength; chromium is present within the range of 19 to 22%, nickel is present within the range of 30 to 45%, tungsten is present within the range of 1 to 4% and lanthanum is present within the range of 0.02 to 0.25% with the lanthanum addition providing the oxidation resistance and the combination of elements being balanced to achieve structural stability and thus high strength at elevated temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile