Patents by Inventor Peter R. Betteridge

Peter R. Betteridge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • New strains of Pseudomonas putida and their use
    Patent number: 4927759
    Abstract: Strains of Pseudomonas putida selected from Pseudomonas putida NCIB 12190 and mutant strains thereof, which mutant strains can be obtained by chemical and physical mutation, allowing the mutated bacteria to grow prior to exposure to benzene or fluorobenzene, and subsequently, after further growth in the presence of benzene or fluorobenzene, selecting those mutant strains which accumulate cis-dihydroxycyclohexadiene or catechol or their fluorinated analogues. The new strains can be used in biochemical processes for the preparation of cis-dihydroxycyclohexadienes and catechols.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: May 22, 1990
    Assignee: Shell Oil Company
    Inventors: John A. Schofield, Peter R. Betteridge, George Ryback, Philip J. Geary
  • New strains of pseudomonas putida
    Patent number: 4876200
    Abstract: Strains of Pseudomonas putida selected from Pseudomonas putida NCIB 12190 and mutant strains thereof, which mutant strains can be obtained by chemical and physical mutation, allowing the mutated bacteria to grow prior to exposure to benzene or fluorobenzene, and subsequently, after further growth in the presence of benzene or fluorobenzene, selecting those mutant strains which accumulate cis-dihydroxycyclohexadiene or catechol or their fluorinated analogues. The new strains can be used in biochemical processes for the preparation of cis-dihydroxycyclohexadienes and catechols.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: October 24, 1989
    Assignee: Shell Oil Company
    Inventors: John A. Schofield, Peter R. Betteridge, George Ryback, Philip J. Geary
  • Process for cell disruption
    Patent number: 4642289
    Abstract: Process for disrupting cells of a polysaccharide-producing microorganism of the genus Pseudomonas, preferably Pseudomonas sp. NCIB 11592, which contain one or more RP4 and/or RP4::Mu.sub.ts plasmids.Pseudomonas sp. NCIB 11592 containing one or more plasmids. Process for preparing polysaccharides by cultivating the latter. Process for displacing a fluid through a well and/or a permeable subsurface formation using the polysaccharides.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: February 10, 1987
    Assignee: Shell Oil Company
    Inventor: Peter R. Betteridge