Patents by Inventor George Ryback

George Ryback 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
  • Preparation of fluorophenols
    Patent number: 4855512
    Abstract: 2- and 3-fluorophenols are prepared by dehydrating 1,2-dihydroxy-3-fluorocyclohexa-3,5-diene under basic conditions and recovering the desired product, for example by fractional distillation.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: August 8, 1989
    Assignee: Shell Oil Company
    Inventor: George Ryback