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.:

US 7056470 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 06, 2006

Filed:

Jan. 21, 2003
Applicants:

Richard Malen, Ayer, MA (US);

Prabhat Kumar, Framingham, MA (US);

Inventors:

Richard Malen, Ayer, MA (US);

Prabhat Kumar, Framingham, MA (US);

Assignee:

H. C. Starck Inc., Newton, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 (2006.01); B22F 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A capacitor-grade wire made from powder metallurgy containing at least niobium and silicon, wherein the niobium is the highest weight percent metal present in the niobium wire. The wire having a controlled tensile strength at finish diameter exceeds the strength of capacitor-grade wire formed by ingot metallurgy. Also, the powder metallurgy wire hardness exceeds capacitor-grade wire formed from ingot metallurgy with electrical leakage meeting the specifications normally applied to capacitor grade tantalum, niobium or niobium-zirconium lead wire at sinter temperatures of about 1150° C. and above.


Find Patent Forward Citations

Malen, Richard. (2006). Capacitor-grade lead wires with increased tensile strength and hardness (U.S. Patent No. 7056470). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7056470

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