Patent US2981683A successfully refreshed from Google Patents.
US2981683A
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Transportation of waxy oils
Assignee: Shell USA Inc
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Filing: 1958-01-14
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Granted: 1961-04-25
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Expires: 1978-01-14
Abstract
No abstract record available.
Inventors
- 👤 Warren C Simpson
- 👤 Harry J Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:27
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; F17D1/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A PROCESS FOR TRANSPORTING WAXY OILS THROUGH PIPE-LINES, THE STEPS OF MIXING A WAXY OIL HAVING A POUR POINT ABOVE ABOUT 75*F. WITH WATER TO FORM AN OIL-INWATER SUSPENSION, AND EFFECTING SAID MIXING UNDER CONDITIONS WHEREBY THE EQUILIBRIUM TEMPERATURE OF THE RESULTING OIL-IN-WATER SUSPENSION IS ABOVE THE FREEZING POINT OF WATER BUT BELOW THAT DEFINED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
60 words
IN A PROCESS FOR TRANSPORTING WAXY OILS THROUGH PIPE-LINES, THE STEPS OF MIXING A WAXY OIL HAVING A POUR POINT ABOVE ABOUT 75*F. WITH WATER TO FORM AN OIL-INWATER SUSPENSION, AND EFFECTING SAID MIXING UNDER CONDITIONS WHEREBY THE EQUILIBRIUM TEMPERATURE OF THE RESULTING OIL-IN-WATER SUSPENSION IS ABOVE THE FREEZING POINT OF WATER BUT BELOW THAT DEFINED BY THE GENERAL FORMULA
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |