Ph sensing apparatus
Abstract
Abstract THROUGH-FLOW PH-SENSING APPARATUS INCLUDING A THIN GLASS MEMBRANE OF PH SENSITIVE GLASS HAVING A THICKNESS OF THE GENERAL ORDER OF .010", MORE OR LESS WHOSE INNER SURFACE IS GENERALLY A PROJECTION OF THE INNER SURFACE OF THE PIPE-LINE ON WHICH THE APPARATUS IS MOUNTED, SUCH INNER SURFACE OF SAID MEMBRANCE FACING AND BEING ADAPTED TO AND IN CONTACT WITH THE LIQUID PASSING THROUGH SAID PIPELINE, THE OUTER SURFACE OF SAID MEMBRANE BEING DE-GLAZED TO FORM MINUTE RECESSES THEREIN, AN ELECTRICALLY-CONDUCTIVE COATING ON SAID DE-GLAZED OUTER SURFACE, AND A DIETECTRIC MEMBRANE-BACKING COVERING AND IN INTIMATE CONTACT WITH THE OUTER SURFACE OF SAID MEMBRANE AND THE METAL COATING THEREON AND INSULATING THE SAID CONDUCTIVE COATING FROM THE INNER SURFACE OF SAID MEMBRANE.
Inventors
- 👤 Oscar H Grauer
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |