Sentient Technologies, Inc.

2Sentient Inc.

Fredrick Quincy Johnson

Henry Roskos

Harold Mark Bain

A blood pH measurement device comprises a tube through which blood or other ion-containing fluid flows, at least one dry reference electrode, a proton diffusion differentiator, an ion-sensitive field-effect transistor, and a pH meter. The tube can comprise an annular wall with an entry, an exit, and a sensor floor. The dry reference electrode is preferably located within the tube between the entry and the exit and opposite the sensor floor. It is also contemplated that the dry reference electrode is surrounded by a membrane and is, at least partially, associated with the interior surface of the annular wall. The contemplated invention can also include a proton diffusion differentiator, such as an electrolyte separation layer, connecting the external surface of the sensor floor to an ion-selective field effect transistor (ISFET), wherein the ISFET measures the ion concentration of the blood.

Blood pH measurement using electrolyte separation layer

Solid state components having an air core and methods of producing such components are presented. An air core component preferably has lower conducting bands, upper conducting, and conducting posts that collectively form a conducting coil. A coating material placed at least over the upper bands of the coil provides structural support for the coil. The coil can be built around or in a sacrificial core material that can be removed leaving an air core behind.

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Pleasanton, CA, United States of America

Fredrick Quincy Johnson