Patents by Inventor Edward H. Erickson

Edward H. Erickson 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).

  • N-Tetrazolyl benzamides and anti-allergic use thereof
    Patent number: 4474792
    Abstract: Amides obtained by condensing aminotetrazole with optionally substituted ortho-alkoxybenzoic and ortho-methylthiobenzoic acids are potent anti-allergic agents.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: October 2, 1984
    Assignee: Riker Laboratories, Inc.
    Inventor: Edward H. Erickson
  • Tetrazoles bonded to certain polycyclic aromatic systems and anti-allergic use thereof
    Patent number: 4432986
    Abstract: Amides obtained by reaction of aminotetrazole and certain optionally substituted polycyclic aromatic acids are potent anti-allergic agents.
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: February 21, 1984
    Assignee: Riker Laboratories, Inc.
    Inventor: Edward H. Erickson
  • N-(Tetrazol-5-yl)phenazine-1-carboxamides
    Patent number: 4377579
    Abstract: Amides obtained by reaction of aminotetrazole and certain optionally substituted phenazinecarboxylic acids are potent anti-allergic agents.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: March 22, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Edward H. Erickson
  • Methods of using 8(tetrazol-5-ylcarbamoyl)isoquinoline compounds
    Patent number: 4186201
    Abstract: 8-(1H-Tetrazol-5-ylcarbamoyl)quinolines and pharmaceutically acceptable salts thereof are potent anti-allergic agents.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: January 29, 1980
    Assignee: Riker Laboratories, Inc.
    Inventor: Edward H. Erickson
  • 8-(1H-Tetrazol-5-yl-carbamoyl)quinoline compounds
    Patent number: 4147694
    Abstract: 8-(1H-Tetrazol-5-ylcarbamoyl)quinolines and pharmaceutically acceptable salts thereof are potent anti-allergic agents.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: April 3, 1979
    Assignee: Riker Laboratories, Inc.
    Inventor: Edward H. Erickson
  • Substituted 3-(1H-tetrazol-5-yl)-quinoline compounds
    Patent number: 4035368
    Abstract: Substituted 4-hydroxy-3-(1H-tetrazol-5-yl)-quinoline compounds are prepared by reacting substituted 3-cyano-4-hydroxyquinolines with sodium azide to provide useful anti-allergic compounds.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: July 12, 1977
    Assignee: Riker Laboratories, Inc.
    Inventor: Edward H. Erickson
  • [1]Benzothieno[3,2-f]quinolinecarboxylic acids
    Patent number: 4018780
    Abstract: 4-Hydroxy[1]benzothieno[3,2-f]quinoline-2-carboxylic acids and esters thereof are prepared by the reaction of an optionally substituted 2-aminobenzothiophene with dimethyl acetylenedicarboxylate followed by ring closure. The sulfur atom of the intermediate compounds in the process can be oxidized to oxide or dioxide state, then hydrolyzed to the acids, or first hydrolyzed to the acids and then oxidized, if desired. The acids are physiologically active as anti-allergic agents in the acid form or as salts.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: April 19, 1977
    Assignee: Riker Laboratories, Inc.
    Inventors: Larry R. Lappi, Edward H. Erickson