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. 14, 2010
Filed:
Oct. 12, 2006
Vamsy P. Chodavarapu, Verdun, CA;
Alexander N. Cartwright, Williamsville, NY (US);
Albert H. Titus, Buffalo, NY (US);
Rachel M. Bukowski, Buffalo, NY (US);
Frank V. Bright, Williamsville, NY (US);
Vamsy P. Chodavarapu, Verdun, CA;
Alexander N. Cartwright, Williamsville, NY (US);
Albert H. Titus, Buffalo, NY (US);
Rachel M. Bukowski, Buffalo, NY (US);
Frank V. Bright, Williamsville, NY (US);
The Research Foundation of State University of New York, Amherst, NY (US);
Abstract
pH-change sensors and related methods are disclosed. One such sensor may have a first ion-sensitive transistor-operational-transconductance-amplifier (the 'first IOTA') and a second ion-sensitive transistor-operational-transconductance-amplifier (the 'second IOTA'). Each IOTA may have an ion-sensitive transistor, a load transistor, and an output. In each IOTA, the drain region of the ion-sensitive transistor may be connected to the drain region of the load transistor. A differential sensor may be connected to the IOTAs, and an output from the differential sensor may indicate a voltage difference between the IOTA outputs. The output from the differential sensor may be used to provide an indication of a change in pH.