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. 02, 1986
Filed:
Dec. 05, 1984
Applicant:
Inventors:
Motohisa Nara, Fukushima, JP;
Yasushi Endo, Fukushima, JP;
Assignee:
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ; G01J / ;
U.S. Cl.
CPC ...
250338 ; 250370 ;
Abstract
In an infrared sensor having a pyroelectric element and a FET in a high frequency electric field and infrared radiation shielding case, a capacitor is located in the case and connected to at least one of the drain and source electrodes of the FET in order to remove an influence due to an external high-frequency electric field.