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:
Dec. 14, 1982
Filed:
Dec. 03, 1979
Applicant:
Inventors:
Assignee:
Hitachi Heating Appliances Co., Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219497 ; 219 / ; 219 / ; 219502 ; 219506 ; 307117 ; 374161 ;
Abstract
A heating apparatus capable of heating an article to be heated accommodated within a heating chamber to a degree that the article becomes charred. Illumination intensity of reflected light from the surface of the article illuminated with visible light rays from a light source is detected by an optical sensor, to thereby identify the degree of charring produced in the article, wherein heating operation is controlled on the basis of the identified degree of charring.