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. 11, 2003
Filed:
Sep. 23, 1999
Applicant:
Inventor:
Nobutaka Nakamura, Chiba, JP;
Assignee:
Seiko Instruments Inc., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/520 ; H05B 1/02 ; H05B 3/02 ;
U.S. Cl.
CPC ...
G01N 2/520 ; H05B 1/02 ; H05B 3/02 ;
Abstract
The sample temperature is roughly controlled according to a program temperature by a furnace temperature controller, and at the same time precisely controlled by a detector temperature controller. Also, if a temperature difference occurs, the supply powers to heaters separately provided close to the sample and reference are adjusted such that the temperature difference is returned to zero by a differential heat compensating circuit, outputting a difference in supply power as a differential heat flow.