Patents Assigned to Rikagaku Kenkysuho
  • Extremely halophilic methanogenic archaebacteria
    Patent number: 5350684
    Abstract: Methanohalococcus alcaliphilum having an optimum growth sodium chloride concentration ranging from about 2.5 to about 3 mole are herein disclosed. The bacteria are halophilic or halophilic and alkalophilic and can be used as the microorganisms which play a central role in the methods of methane fermentation to enhance the efficiency of such a method since the use of the microorganism makes it possible to carry out the method at an alkaline pH, in the presence of salts in a high concentration and at a low temperature.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: September 27, 1994
    Assignees: Research Development Corporation of Japan, Mitsubishi Electric Corporation, Rikagaku Kenkysuho
    Inventors: Naoki Nakatsugawa, Koki Horikoshi