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:
Jul. 27, 2010
Filed:
Aug. 14, 2006
Robert A. Estes, Tomball, TX (US);
Rocco Difoggio, Houston, TX (US);
Eric B. Molz, Houston, TX (US);
Constantyn Chalitsios, Houston, TX (US);
Philip L. Kurkoski, Houston, TX (US);
Robert A. Estes, Tomball, TX (US);
Rocco DiFoggio, Houston, TX (US);
Eric B. Molz, Houston, TX (US);
Constantyn Chalitsios, Houston, TX (US);
Philip L. Kurkoski, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A photodiode whose long-wavelength cutoff is in the short-wavelength range (preferably, between ultraviolet and yellowish-green) having reduced temperature sensitivity is used in downhole applications. It may be matched with scintillation devices having an output matched to the response curve of the photodiode for use with nuclear logging devices. The photodiode may also be used in gyroscopes in which light from an LED matched to the photodiode is reflected from a spinning mass.