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:
Sep. 04, 1979
Filed:
Mar. 30, 1978
Applicant:
Inventor:
Hansjurg Keller, Mannedorf, CH;
Assignee:
Cerberus AG, Mannedorf, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250342 ; 250349 ;
Abstract
A radiation detector having at least one radiation sensitive element with more than two electrical contacts. The effects of noise occurring between pairs of contacts are substantially eliminated by multiplying at least two partial signals appearing between two of the contacts. The detector is particularly suitable for use as a passive infrared detector and as a flame detector.