Electrode for electrochemical sensors
US4938860A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1985 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/817
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A disposable, inexpensive electrode for an electrochemical sensor includes a laminated anode and a laminated cathode. The anode is a film substrate with anodic material such as platinum deposited on the substrate. The cathode is also a film substrate with cathodic material such as silver deposited on the substrate. The anode and cathode can be laminated with an intermediate layer of dielectric material. A working surface is provided on the electrode and defined, in part, by the anode and cathode. One procedure for defining the working surface is to fabricate spaced openings in the cathode film and the layer of dielectric material. The openings in the cathode film and dielectrical layer are aligned and the exposed surfaces of the anode and cathode define the working area. An enzyme, such as glucose oxidase, is bonded to the exposed anode and a membrane is applied over the working area and enzyme. The membrane is preferably a silicone water-based elastomer. The laminated anode, cathode and dielectric layer are then severed to form individual electrodes each including a working area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.