US3320529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for testing a dielectric liquid
Assignee: Ericsson Inc
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Filing: 1962-11-28
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Granted: 1967-05-16
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Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 Jay H Vreeland
- 👤 Iii George Feick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:57
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF MEASURING THE RESISTIVITY OF A DIELECTRIC LIQUID OVER AN EXTENDED PERIOD OF TIME COMPRISING THE STEPS OF REPEATEDLY: (A) APPLYING A D.-C. VOLTAGE ACROSS A PAIR OF ELECTRODES IMMERSED IN SAID LIQUID FOR A LENGTH OF TIME, IN SECONDS, (A) NOT LESS THAN ABOUT 1, NOR (B) MORE THAN ABOUT 10, (B) MEASURING THE FLOW OF CURRENT BETWEEN SAID ELECTRODES DURING SAID LENGTH OF TIME, (C) RECORDING SAID FLOW, AND (D) INTERRUPTING SAID APPLIED D.-C. VOLTAGE FOR A
Claim 2
Independent Claim
81 words
THE METHOD OF MEASURING THE RESISTIVITY OF A DIELECTRIC LIQUID OVER AN EXTENDED PERIOD OF TIME COMPRISING THE STEPS OF REPEATEDLY: (A) APPLYING A D.-C. VOLTAGE ACROSS A PAIR OF ELECTRODES IMMERSED IN SAID LIQUID FOR A LENGTH OF TIME, IN SECONDS, (A) NOT LESS THAN ABOUT 1, NOR (B) MORE THAN ABOUT 10, (B) MEASURING THE FLOW OF CURRENT BETWEEN SAID ELECTRODES DURING SAID LENGTH OF TIME, (C) RECORDING SAID FLOW, AND (D) INTERRUPTING SAID APPLIED D.-C. VOLTAGE FOR A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |