Back to results
US 4,450,842 AGranted
Solid state reference electrode
AssigneeCordis Corporation
InventorsGregory L. Zick, Stanley H. Saulson
Life of this patent
Estimating the term…
Abstract
In the reference electrode construction disclosed herein, silver and silver chloride particles are incorporated in a mixture including a fusible glass frit. After being printed on a suitable substrate, the mixture is fired to bond the silver/silver chloride composite into a conductive film on the surface of the substrate.
Claims7
A solid state sensor for measuring the oxygen of blood by contact with a patient's skin, said sensor comprising:
- a thin ceramic substrate disc having front and back surfaces;
- a noble metal cathode, extending through said substrate from the back surface to the front surface where, at a first limited area of said front surface, said cathode is exposed for reducing oxygen;
- and
- a reference electrode comprising a mixture of silver, silver chloride and a fused glass frit forming a conductive film coating over a second limited area of said disc front surface.
1 more element
Dependencies are inferred from the claim text.