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. 01, 2004
Filed:
Nov. 29, 2001
Applicant:
Inventors:
Assignee:
Yamaha Corporation, Shizuoka-ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/534 ; H01L 3/528 ; H01L 3/530 ; H01L 3/516 ; B22F 1/00 ;
U.S. Cl.
CPC ...
H01L 3/534 ; H01L 3/528 ; H01L 3/530 ; H01L 3/516 ; B22F 1/00 ;
Abstract
Thermoelectric material of (Bi, Sb)(Te, Se) system is produced through a liquid quenching method and an extrusion from a die unit having an inlet portion and an outlet portion crossing each other at 30-150 degrees so that the crystal grains have an average grain size equal to or less than 30 microns and (001) planes mostly oriented in parallel to a direction in which electric current to flow, thereby achieving the figure of merit equal to or greater than 3.0×10 /K.