Patents by Inventor George L. Dunn

George L. Dunn 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).

  • 7-[2-Alkoxyimino-2-(amino-thiazole)acetami do]-3-[1-(sulfaminoalkly)tetrazolthiomethyl]cephalosporins
    Patent number: 4308267
    Abstract: Novel cephalosporins with improved antibacterial and pharmacokinetic properties are disclosed. These compounds have a 2-alkoxyimino-2-(2-amino-4-thiazolyl)-acetamido group at position 7 and a sulfaminoalkyltetrazolythio group at position 3.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: December 29, 1981
    Assignee: SmithKline Corporation
    Inventors: David A. Berges, George L. Dunn
  • 7-Alpha-oxyiminoacylcephalosporins
    Patent number: 4278670
    Abstract: New semisynthetic cephalosporins having antibacterial activity are described. The structures of the new compounds are characterized by having an .alpha.-oxyimino group in the 7-acetamidomoiety plus a carboxyalkyltetrazolylthiomethyl group at position 3.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: July 14, 1981
    Assignee: SmithKline Corporation
    Inventor: George L. Dunn
  • 7-Hydroxyhalophenylacetamido-3-heterocyclicthiomethyl cephalosporins
    Patent number: 4133882
    Abstract: Cephalosporin compounds substituted in the 7-position with a hydroxy-halo substituted .alpha.-aminophenylacetamido group and in the 3-position with a heterocyclicthiomethyl group are prepared by 7-acylation. The products are antibacterial agents.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: January 9, 1979
    Assignee: SmithKline Corporation
    Inventors: George L. Dunn, John R. E. Hoover
  • .alpha.-Amino-.alpha.-(acylamidophenyl)acetamidocephalosporins
    Patent number: 3988451
    Abstract: 7-[.alpha.-Amino-.alpha. -(acylamidophenyl)acetamido]-cephalosporins are prepared. They show improved antibacterial activity especially when they are administered orally.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: October 26, 1976
    Assignee: SmithKline Corporation
    Inventor: George L. Dunn
  • P-Hydroxymethylphenylacetamidocephalosporins
    Patent number: 3987041
    Abstract: 7-(p-Hydroxymethylphenylglycylamido)cephalosporins are prepared by acylating a 7-aminocephalosporin compound. The products have antibacterial activity.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: October 19, 1976
    Assignee: SmithKline Corporation
    Inventors: George L. Dunn, John R. E. Hoover
  • 3-Heterocyclic thiomethylcephalosporins
    Patent number: 3985739
    Abstract: Cephalosporin compounds substituted at the 7-position with free or substituted .alpha.-amino or hydroxy phenylacetamido and at the 3-position with a heterocyclic thiomethyl group are prepared by displacement of a 3-acetoxymethyl compound with a mercaptoheterocycle or by 7-acylation. The products are antibacterial agents.
    Type: Grant
    Filed: October 1, 1974
    Date of Patent: October 12, 1976
    Assignee: SmithKline Corporation
    Inventors: George L. Dunn, John R. E. Hoover
  • p-Hydroxymethylphenylglycine
    Patent number: 3972919
    Abstract: 7-(p-Hydroxymethylphenylglycylamido)cephalosporins are prepared by acylating a 7-aminocephalosporin compound. The products have antibacterial activity.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: August 3, 1976
    Assignee: SmithKline Corporation
    Inventors: George L. Dunn, John R. E. Hoover
  • 3-Heterocyclic thiomethylcephalosporins as antibacterial agents
    Patent number: 3968226
    Abstract: Cephalosporin compounds substituted at the 7-position with free or substituted .alpha.-aminophenylacetamido and at the 3-position with a heterocyclic thiomethyl group are prepared by displacement of a 3-acetoxymethyl compound with a mercaptoheterocycle. The products are antibacterial agents.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: July 6, 1976
    Assignee: SmithKline Corporation
    Inventors: George L. Dunn, John R. E. Hoover
  • P-hydroxymethylphenylacetamidocephalosporins
    Patent number: 3962230
    Abstract: 7-(p-Hydroxymethylphenylglycylamido)cephalosporins are prepared by acylating a 7-aminocephalosporin compound. The products have antibacterial activity.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: June 8, 1976
    Assignee: SmithKline & French Laboratories, Inc.
    Inventors: George L. Dunn, John R. E. Hoover
  • .alpha.-Amino-.alpha.-(acylamidophenyl)acetamidocephalosporins
    Patent number: 3931160
    Abstract: 7-[.alpha.-Amino-.alpha.-(acylamidophenyl)acetamido]-cephalosporins are prepared. They show improved antibacterial activity especially when they are administered orally.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: January 6, 1976
    Assignee: SmithKline Corporation
    Inventor: George L. Dunn