Patents by Inventor Kevin Keqin Chen

Kevin Keqin Chen 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).

  • Gene encoding a putive efflux protein for solvents/antibiotics in Pseudomonas mendocina
    Patent number: 6410265
    Abstract: This invention relates to the isolation of a novel putative efflux gene from Pseudomonas mendocina. The putative efflux gene is useful for probing an organism's efflux system to gain an understanding of the mechanisms of solvent tolerance. The invention further provides a Pseudomonas mendocina strain deficient in this gene. This strain is unable to grow in the presence of chloramphenicol and, compared to the wildtype strain, grows slowly in the presence of high concentrations of PHBA.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: June 25, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kevin Keqin Chen
  • Gene encoding a putative efflux protein for solvents/antibiotics in pseudomonas mendocina
    Patent number: 6235882
    Abstract: This invention relates to the isolation of a novel putative efflux gene from Pseudomonas mendocina. The putative efflux gene is useful for probing an organism's efflux system to gain an understanding of the mechanisms of solvent tolerance. The invention further provides a Pseudomonas mendocina strain deficient in this gene. This strain is unable to grow in the presence of chloramphenicol and, compared to the wildtype strain, grows slowly in the presence of high concentrations of PHBA.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: May 22, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kevin Keqin Chen
  • Gene encoding a putative efflux protein for solvents/antibiotics in pseudomonas mendocina
    Patent number: 6225089
    Abstract: This invention relates to the isolation of a novel putative efflux gene from Pseudomonas mendocina. The putative efflux gene is useful for probing an organism's efflux system to gain an understanding of the mechanisms of solvent tolerance. The invention further provides a Pseudomonas mendocina strain deficient in this gene. This strain is unable to grow in the presence of chloramphenicol and, compared to the wildtype strain, grows slowly in the presence of high concentrations of PHBA.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: May 1, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kevin Keqin Chen