US2678911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion testing
Assignee: California Research LLC
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Filing: 1950-10-25
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Granted: 1954-05-18
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Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Chittum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF DETERMINING THE ELECTRICAL POLARITY OF THE AQUEOUS PHASE OF A WATER-IN-OIL TYPE EMULSION COMPRISING THE STEPS OF CONTACTING SAID EMULSION WITH A PAIR OF ELECTRODES, AT LEAST ONE WHICH IS CHARACTERIZED BY ITS ABILITY TO LIBERATE GAS WHEN IN CONTACT WITH SAID AQUEOUS PHASE, APPLYING A POLARIZED VOLTAGE BETWEEN SAID PAIR OF ELECTRODES AND MEASURING THE EVOLUTION OF GAS FROM THE AQUEOUS PHASE OF SAID EMULSION IN CONTACT WITH SAID ONE ELECTRODE.
Claim 2
Independent Claim
75 words
A METHOD OF DETERMINING THE ELECTRICAL POLARITY OF THE AQUEOUS PHASE OF A WATER-IN-OIL TYPE EMULSION COMPRISING THE STEPS OF CONTACTING SAID EMULSION WITH A PAIR OF ELECTRODES, AT LEAST ONE WHICH IS CHARACTERIZED BY ITS ABILITY TO LIBERATE GAS WHEN IN CONTACT WITH SAID AQUEOUS PHASE, APPLYING A POLARIZED VOLTAGE BETWEEN SAID PAIR OF ELECTRODES AND MEASURING THE EVOLUTION OF GAS FROM THE AQUEOUS PHASE OF SAID EMULSION IN CONTACT WITH SAID ONE ELECTRODE.
References Cited (Backward Citations)
US2116509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |