US2533878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pumping viscous petroleum
Assignee: ExxonMobil Oil Corp
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Filing: 1949-05-31
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Granted: 1950-12-12
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Expires: 1969-05-31
Abstract
No abstract record available.
Inventors
- 👤 Albert F Clark
- 👤 Shapiro Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:13
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1233; C10L1/125; C10L1/1283; C10L1/14; C10L1/18; C10L1/188; C10L1/1881; C10L1/24; C10L1/2431; C10L1/2437; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE TRANSPORTATION OF VISCOUS PETROLEUM BY PIPE LINE, THE IMPROVEMENT COMPRISING: INTRODUCING INTO SAID PIPE LINE WITH SAID PETROLEUM AT LEAST 8% BY VOLUME WITH RESPECT TO THE TOTAL LIQUID OF WATER CONTAINING IN SOLUTION A WETTING AGENT AND AN ALKALI-METAL PHOSPHATE AND HAVING A HYDROGEN-ION CONCENTRATION BETWEEN PH 5.7 AND PH 7.0.
Claim 2
Dependent Claim
54 words
IN THE TRANSPORTATION OF VISCOUS PETROLEUM BY PIPE LINE, THE IMPROVEMENT COMPRISING: INTRODUCING INTO SAID PIPE LINE WITH SAID PETROLEUM AT LEAST 8% BY VOLUME WITH RESPECT TO THE TOTAL LIQUID OF WATER CONTAINING IN SOLUTION A WETTING AGENT AND AN ALKALI-METAL PHOSPHATE AND HAVING A HYDROGEN-ION CONCENTRATION BETWEEN PH 5.7 AND PH 7.0.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |