US2641565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of shale
Assignee: Texaco Inc
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Filing: 1948-04-14
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Granted: 1953-06-09
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Expires: 1968-04-14
Abstract
No abstract record available.
Inventors
- 👤 Robert T Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:50
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; Y10S435/874; Y10S435/876
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD FOR TREATING KEROGEN-TYPE OIL SHALES FOR THE PURPOSE OF FACILITATING THE SEPARATION AND RECOVERY OF HYDROCARBON, BITUMINOUS SUBSTANCES AND THE LIKE ASSOCIATED THEREWITH, WHICH COMPRISES SUBJECTING SAID MATERIALS TO THE ACTION OF MICROORGANISMS SELECTED FROM THE GROUP CONSISTING OF CLOSTRIDIUM SPOROGENES, CLOSTRIDIUM HISTOLYTICICUM, CLOSTRIDIUM LENTOPUTRESCENS, PSEUDOMONAS FLUORESCENS AND MIXTURES THEREOF, IN THE PRESENCE OF A MICROBIOLOGICAL NUTRIENT MEDIUM CAPABLE OF SUPPORTING THE METABOLISM OF SAID MICROORGANISM.
Claim 2
Independent Claim
68 words
A METHOD FOR TREATING KEROGEN-TYPE OIL SHALES FOR THE PURPOSE OF FACILITATING THE SEPARATION AND RECOVERY OF HYDROCARBON, BITUMINOUS SUBSTANCES AND THE LIKE ASSOCIATED THEREWITH, WHICH COMPRISES SUBJECTING SAID MATERIALS TO THE ACTION OF MICROORGANISMS SELECTED FROM THE GROUP CONSISTING OF CLOSTRIDIUM SPOROGENES, CLOSTRIDIUM HISTOLYTICICUM, CLOSTRIDIUM LENTOPUTRESCENS, PSEUDOMONAS FLUORESCENS AND MIXTURES THEREOF, IN THE PRESENCE OF A MICROBIOLOGICAL NUTRIENT MEDIUM CAPABLE OF SUPPORTING THE METABOLISM OF SAID MICROORGANISM.
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 |