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US Patent 4568644 - Fermentation method producing ethanol
US Patent Issued on February 4, 1986
Estimated Patent Expiration Date:
August 13, 2004Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
August 13, 2004Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractEthanol is the major end product of an anaerobic, thermophilic fermentation process using a mutant strain of bacterium Clostridium thermosaccharolyticum. This organism is capable of converting hexose and pentose carbohydrates to ethanol, acetic and lactic acids. Mutants of Clostridium thermosaccharolyticum are capable of converting these substrates to ethanol in exceptionally high yield and with increased productivity. Both the mutant organism and the technique for its isolation are provided.Other References
| InventorsApplicationNo. 06/640247 filed on 08/13/1984US Classes:435/161, Ethanol435/252.7, Clostridium435/441, Mutation employing a chemical mutagenic agent435/444, By use of alkylating agent (e.g., nitrosoguanidine, etc.)435/446, Mutation employing radiation or electricity435/448, Ultraviolet irradiation435/842ClostridiumField of Search435/842, Clostridium435/161, Ethanol435/163, Produced as by-product, or from waste, or from cellulosic material substrate435/165Substrate contains cellulosic materialExaminersPrimary: Bashore, S. LeonAssistant: Hastings, Karen M. Attorney, Agent or FirmUS Patent References4211846, Processes for the manufacture of D(-)-3-hydroxybutyric acid and D(-)-3-hydroxybutyric acid producing mutantsIssued on: 07/08/1980 Inventor: Lafferty4400470Use of co-cultures in the production of ethanol by the fermentation of biomass Issued on: 08/23/1983 Inventor: Zeikus , et al. International ClassesC12P 7/02 (20060101)C12P 7/06 (20060101) |
