Patent US2937139A successfully refreshed from Google Patents.
US2937139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of hydrocarbons by extraction with phenolic materials
Assignee: Gulf Oil Corp
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Filing: 1956-03-13
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Granted: 1960-05-17
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Expires: 1976-03-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Hoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:00
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/005; C07C37/009; C10; C10G; C10G21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS FOR RECOVERING PHENOLIC MATERIAL FROM WASTE WATER WHICH COMPRISES CONTACTING THE WASTE WATER WITH A SOLID ADSORBENT WHEREBY A SUBSTANTIAL AMOUNT OF THE PHENOLIC MATERIAL IN THE WASTE WATER IS ADSORBED BY THE SOLID ADSORBENT, DRAINING WATER FROM THE SOLID ADSORBENT AND REMOVING A SUBSTANTIAL AMOUNT OF THE ADSORBENT AND REMOVING A SUBSTANTIAL AMOUNT OF THE ADSORBED PHENOL FROM THE SOLID ADSORBENT BY CONTACTING THE SOLID ADSORBENT WHILE IT STILL RETAINS WATER, EXCEPTING THAT WATER WHICH DRAINS THEREFROM BY GRAVITY, WITH A LUBRICATING OIL FRACTION COMPOSED PRIMARILY OF HYDROCARBONS HAVING A BOILING POINT BETWEEN ABOUT 200* AND 275*C. AT 0.1 MM. HG.
Claim 2
Dependent Claim
104 words
THE PROCESS FOR RECOVERING PHENOLIC MATERIAL FROM WASTE WATER WHICH COMPRISES CONTACTING THE WASTE WATER WITH A SOLID ADSORBENT WHEREBY A SUBSTANTIAL AMOUNT OF THE PHENOLIC MATERIAL IN THE WASTE WATER IS ADSORBED BY THE SOLID ADSORBENT, DRAINING WATER FROM THE SOLID ADSORBENT AND REMOVING A SUBSTANTIAL AMOUNT OF THE ADSORBENT AND REMOVING A SUBSTANTIAL AMOUNT OF THE ADSORBED PHENOL FROM THE SOLID ADSORBENT BY CONTACTING THE SOLID ADSORBENT WHILE IT STILL RETAINS WATER, EXCEPTING THAT WATER WHICH DRAINS THEREFROM BY GRAVITY, WITH A LUBRICATING OIL FRACTION COMPOSED PRIMARILY OF HYDROCARBONS HAVING A BOILING POINT BETWEEN ABOUT 200* AND 275*C. AT 0.1 MM. HG.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |