U.S. patents available from 1976 to present.
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Clostridiumm ljungdahlii, an anaerobic ethanol and acetate producing microorganism

Patent 5173429 Issued on December 22, 1992. Estimated Expiration Date: Icon_subject November 9, 2010. Estimated 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.

Patent References

Ethanol-producing mutants of Clostridium thermosaccharolyticum Patent #: 4652526
Issued on: 03/24/1987
Inventor: Hsu

Inventors

Application

No. 612221 filed on 11/09/1990

US Classes:

435/252.7, Clostridium435/135, Carboxylic acid ester435/161, Ethanol435/163, Produced as by-product, or from waste, or from cellulosic material substrate435/842Clostridium

Examiners

Primary: Robinson, Douglas W.
Assistant: Williams, Jane

Attorney, Agent or Firm

International Classes

C12N 001/20
C12P 007/06
C12N 001/00

Abstract

A newly discovered microorganism was isolated in a biologically pure culture and designated Clostridium ljungdahlii, having the identifying characteristics of ATCC No. 49587. Cultured in an aqueous nutrient medium under anaerobic conditions, this microorganism is capable of producing ethanol and acetate from CO and H2 O and/or CO2 and H2 in synthesis gas. Under optimal growth conditions, the microorganism produces acetate in preference to ethanol. Conversely, under non-growth conditions, ethanol production is favored over acetate.

Other References

  • Tanner and Gaddy, Amer. Soc. for Microbiology Annual Mtg. 1990 Abstract #R-21, p. 249
  • J. Bacteriology, Sep. 1979, Wiegel et al., pp. 800-810, vol. 139, No. 3
  • Advanced Studies of Biological Indirect Liquefaction of Coal: Topical Report on Task I: Cultural Identification, Jan. 1989, U.S. Dept. of Energy, Pittsburgh, Energy Technology Center, Contract No. DE-AC22-88PC79813
  • Vega et al., The Biological Production of Ethanol From Synthesis Gas, Applied Biochemistry and Biotechnology, vol. 20/21, 1989, pp. 781-797
  • Barik et al., Biological Production of Alcohols from Coal Through Indirect Liquefaction, The Humana Press, 1988, pp. 363-378
  • Klasson et al., Biological Production of Liquid and Gaseous Fuels From Synthesis Gas, Applied Biochemistry and Biotechnology, vol. 24/25, 1990, pp. 1-20
  • Lundback et al., Parameters Affecting the Kinetics of Ethanol Production from CO, CO2, and H2 by Clostridium ljungdahlii, 12th Symposium on Biotechnology for Fuels and Chemicals, Gatlinburg, Ten
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