US4413058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous production of ethanol by use of flocculent zymomonas mobilis
Assignee: ENERGY United States, Department of
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Filing: 1982-01-28
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Granted: 1983-11-01
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Expires: 2002-01-28
Abstract
Abstract Ethanol is produced by means of a floc-forming strain of Zymomonas mobilis bacteria. Gas is vented along the length of a column containing the flocculent bacteria to preclude disruption of liquid flow.
Inventors
- 👤 Edward J. Arcuri
- 👤 Terrence L. Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:53
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/06; C12P7/065; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y10; Y10S; Y10S435/00; Y10S435/813
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A method for producing ethanol, comprising: placing flocculent Zymomonas mobilis "f" NRRL B-12526 in a reactor column; and passing a stream containing water, sugar, and yeast extract through said reactor column at a flow rate which permits conversion of sugar in said stream to ethanol in said column and retention of said flocculent Zymomonas mobilis "f" NRRL B-12526 in said reactor column.
Claim 2
Independent Claim
62 words
A method for producing ethanol, comprising: placing flocculent Zymomonas mobilis "f" NRRL B-12526 in a reactor column; and passing a stream containing water, sugar, and yeast extract through said reactor column at a flow rate which permits conversion of sugar in said stream to ethanol in said column and retention of said flocculent Zymomonas mobilis "f" NRRL B-12526 in said reactor column.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the sugar in said stream is glucose.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein said stream contains about 5 to about 17 grams of glucose and about 0.5 gram of yeast extract per 100 milliliters of water.
Claim 5
Dependent Claim
102 words
A means for producing ethanol, comprising: a tubular vessel through which is passed a stream containing water, sugar, and yeast extract, the longitudinal axis of said vessel being disposed at an angle of about 45° relative to a horizontal plane; a plurality of gas venting conduits attached to and spaced apart along said vessel and communicating with the interior thereof, free ends of said gas venting conduits terminating at a level substantially even with or above the upper end of said vessel; and a flocculent mass of Zymomonas mobilis "f" NRRL B-12526 disposed in said vessel for converting said sugar to ethanol.
Claim 6
Dependent Claim
102 words
A means for producing ethanol, comprising: a tubular vessel through which is passed a stream containing water, sugar, and yeast extract, the longitudinal axis of said vessel being disposed at an angle of about 45° relative to a horizontal plane; a plurality of gas venting conduits attached to and spaced apart along said vessel and communicating with the interior thereof, free ends of said gas venting conduits terminating at a level substantially even with or above the upper end of said vessel; and a flocculent mass of Zymomonas mobilis "f" NRRL B-12526 disposed in said vessel for converting said sugar to ethanol.
References Cited (Backward Citations)
US3406114A
Cited
US4350765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |