Patent US3159783A successfully refreshed from Google Patents.
US3159783A
Expired / Lapsed
US
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Device for measuring ion concentrations with a copper doped germanium electrode
Assignee: US Philips Corp
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Filing: 1963-09-17
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Granted: 1964-12-01
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Sparnaay Marcus Johannes
- 👤 Wensing Wilhelmina Petronella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:02
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/48; C25D5/50; G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/4035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A DEVICE FOR MEASURING H-ION CONCENTRATIONS, COMPRISING A MEASURING ELECTRODE AND A REFERENCE ELECTRODE, WHICH TWO ELECTRODES ARE CONNECTED THROUGH CURRENT CONDUCTORS TO A DEVICE FOR MEASURING THE ELECTROMOTIVE FORCE SET UP BETWEEN THE ELECTRODES, WHEREIN THE MEASURING ELECTRODE CONSISTS OF GERMANIUM DOPED WITH ABOUT 0.001 TO 1 MOLE PERCENT OF COPPER.
Claim 2
Independent Claim
52 words
A DEVICE FOR MEASURING H-ION CONCENTRATIONS, COMPRISING A MEASURING ELECTRODE AND A REFERENCE ELECTRODE, WHICH TWO ELECTRODES ARE CONNECTED THROUGH CURRENT CONDUCTORS TO A DEVICE FOR MEASURING THE ELECTROMOTIVE FORCE SET UP BETWEEN THE ELECTRODES, WHEREIN THE MEASURING ELECTRODE CONSISTS OF GERMANIUM DOPED WITH ABOUT 0.001 TO 1 MOLE PERCENT OF COPPER.
References 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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |