Patents by Inventor Daniel M. Ellis

Daniel M. Ellis 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).

  • Identification of plant-responsive genes of bacteria
    Patent number: 5397697
    Abstract: The invention is a method for identifying and cloning bacterial genes that are responsive to the presence of a plant host, comprising mutating a bacterial culture with a transposon containing a promoterless marker gene, exposing the bacterial mutants to root exudates, other plant-derived substances or plants, and identifying mutants that have a transposon-associated gene inducible by the plant. These mutants may be used to clone and characterize the promoters and the associated wild-type bacterial genes responsive to the plant.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: March 14, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen T. Lam, Daniel M. Ellis, Thomas D. Gaffney
  • Amylase-negative, asporogenous mutant of Bacillus subtilis useful as a host in a host-vector system
    Patent number: 4465773
    Abstract: A biologically pure amylase-negative, asporogenous mutant B. subtilis EE101 (ATCC 39,096) is provided. This host, which contains no amylase-coding gene, is particularly useful as a host in a host-vector system for recombinant DNA work directed toward the production of improved strains of amylase-producing microorganisms.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: August 14, 1984
    Assignee: CPC International Inc.
    Inventors: Donald H. Dean, Daniel M. Ellis
  • Asporogenic mutant of bacillus subtilis useful as a host in a host-vector system
    Patent number: 4450235
    Abstract: A biologically pure strain of asporogenous B. subtilis DE100 (ATCC 39,094) is provided. This strain, which shows a low frequency of reversion to spore formers, is suitable for a host providing a moderate to high level of biological containment in a host-vector system for use in recombinant DNA methodology.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: May 22, 1984
    Assignee: CPC International Inc.
    Inventors: Donald H. Dean, Daniel M. Ellis
  • Asporogenic mutant of Bacillus subtilis useful as a host in a host-vector system
    Patent number: 4450236
    Abstract: A biologically pure strain of asporogenous B. subtilis DE101 (ATCC 39,095) is provided. This strain, which shows a low frequency of reversion to spore formers, is suitable for a host providing a high level of biological containment in a host-vector system for use in recombinant DNA methodology.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: May 22, 1984
    Assignee: CPC International Inc.
    Inventors: Donald H. Dean, Daniel M. Ellis