Sensor for measuring humidity
Abstract
Abstract A SENSOR FOR MEASURING THE HUMIDITY OF GASES CONSISTS OF A CARRIER WHICH IS PRACTICALLY NON-CONDUCTIVE ELECTRICALLY AND ON TO WHICH A LAYER IS GRAFT POLYMERIZED WHICH CONSISTS OF AN ORGANIC POLYMER THE ELECTRIC CONDUCTIVITY OF WHICH IS A FUNCTION OF THE RELATIVE HUMIDITY, ELECTRODES ARE PROVIDED ON THE CARRIER BEFORE OR AFTER GRAFTING BY THE METHODS KNOWN FOR PREPARING PRINTED CIRCUITS. THE LAYER OF THE ORGANIC POLYMER GRAFTED ON TO THE CARRIER IS OBTAINED FROM POLYMERIZABLE MONOMERS OR PREPOLYMERS WHICH CONTAIN HYDROPHILIC GROUPS IN THEIR MOLECULES. AS CARRIER MATERIALS WHICH MAY HAVE THE SHAPE OF PLATES, SHEETS OR FABRICS ORGANIC POLYMERS, ESPECIALLY POLYOLEFINS OR LINEAR POLYESTERS CAN BE USED AS WELL AS INORGANIC SUBSTRATES WHICH ARE SUSCEPTIBLE TO A GRAFTING REACTION. THE SENSOR IS SUITABLY ARRANGE AS PART OF A CIRCUIT FOR MEASURING HIGH OHMIC RESISTORS.
Inventors
- 👤 Franz Lomker
- 👤 Felix Schmieder
- 👤 Martin Rieber
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |