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Patent US3187564A successfully refreshed from Google Patents.
US3187564A
Expired / Lapsed
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Method for measuring properties of films existing between bulk liquids
Assignee: Pure Oil Co
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Filing: 1959-11-30
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Granted: 1965-06-08
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Charles G Dodd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:21
CPC Classifications
G; G01; G01N; G01N13/00; G01N13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A METHOD FOR DETERMINING WHETHER A PETROLEUM OIL ORIGINATED IN A SELECTED GEOLOGICAL SOURCE COMPRISING DISPOSING A SAMPLE OF SAID OIL OF UNKNOWN SOURCE TOGETHER WITH A LIQUID IMMISCIBLE WITH SAID OIL AND DIFFERING IN DENSITY THEREFROM IN BULK QUANTITIES IN A VESSEL TO PRODUCE A HORIZONTAL INTERFACE BETWEEN SAID OIL AND LIQUID, SUSPENDING A CYLINDRICAL BOB IN SAID OIL AND LIQUID AT SAID INTERFACE, ROTATING THE LIQUIDS IN SAID VESSEL WITH RESPECT TO SAID BOB AT A PLURALITY OF SUBSTANTIALLY DIFFERING CONSTANT SPEEDS, SAID DIFFERING SPEEDS BEING APPLIED FIRST IN ORDER OF
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |