Patent US2641566A successfully refreshed from Google Patents.
US2641566A
Expired / Lapsed
US
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Recovery of hydrocarbons
Assignee: Texaco Development Corp
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Filing: 1948-05-15
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Granted: 1953-06-09
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Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 Claude E Zobell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; C10; C10G; C10G1/00; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/842; Y10S435/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF TREATING HYDROCARBONS AND BITUMINOUS MATERIALS SUCH AS THOSE ENCOUNTERED IN COMBINATION WITH INORGANIC AGGREGATE UNDERGROUND DEPOSITS AND SHALES AND SIMILAR FORMATIONS FOR THE PURPOSE OF FACILITATING SEPARATION AND RECOVERY OF SUCH SUBSTANCES WHICH COMPRISES THE STEPS OF CONTACTING SAID SUBSTANCES WITH A SUBSTANTIAL QUANTITY OF OXYGEN-FREE HYDROGEN IN THE PRESENCE OF HYDROGENASE-PRODUCING MICROORGANISMS SELECTED FROM THE GROUP CONSISTING OF DESULFOVIBRIO DESULFURICANS AND SPOROVIBRIO, EFFECTING SAID CONTACT IN THE PRESENCE OF A MICROBIOLOGICAL NUTRIENT MEDIUM AND REMOVING THE RESULTING PRODUCTS.
Claim 2
Independent Claim
82 words
A METHOD OF TREATING HYDROCARBONS AND BITUMINOUS MATERIALS SUCH AS THOSE ENCOUNTERED IN COMBINATION WITH INORGANIC AGGREGATE UNDERGROUND DEPOSITS AND SHALES AND SIMILAR FORMATIONS FOR THE PURPOSE OF FACILITATING SEPARATION AND RECOVERY OF SUCH SUBSTANCES WHICH COMPRISES THE STEPS OF CONTACTING SAID SUBSTANCES WITH A SUBSTANTIAL QUANTITY OF OXYGEN-FREE HYDROGEN IN THE PRESENCE OF HYDROGENASE-PRODUCING MICROORGANISMS SELECTED FROM THE GROUP CONSISTING OF DESULFOVIBRIO DESULFURICANS AND SPOROVIBRIO, EFFECTING SAID CONTACT IN THE PRESENCE OF A MICROBIOLOGICAL NUTRIENT MEDIUM AND REMOVING THE RESULTING PRODUCTS.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |