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:
Aug. 20, 1996
Filed:
Feb. 22, 1995
Applicant:
Inventors:
Jarmo Nurmi, Kuusisto, FI;
Timo Oikari, Turku, FI;
Assignee:
Wallac Oy, Turku, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250207 ; 313533 ;
Abstract
A gain stabilization system for photomultiplier tubes using a pulsed light source, preferably a light emitting diode (LED), the signal of which is detected at the cathode and at the anode. The gain of photomultiplier tube is stabilized by keeping the ratio between the two signals constant.