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. 22, 1995
Filed:
Jun. 07, 1993
Ian Thomson, Ottawa, CA;
Abstract
This invention describes a flexible radiation probe which has a pair of insulated gate field effect transistors integrated into the same substrate each having a gate, source and drain. The transistors are mounted at the end of a flexible circuit board. The flexible circuit board has conductive tracks which connect the gate, source and drains of each of the transistors to a connection at an opposite end of the flexible circuit board. This connection end may then be connected to a suitable differential biasing circuit for biasing the transistors, and a circuit for reading the differential threshold voltages of the transistors. This differential threshold voltage being indicative of radiation received by the transistors when exposed in the bias mode. The flexible circuit allows the probe to be used in catheters or similar medical equipment.