Patents by Inventor Richard C. Effland

Richard C. Effland 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).

  • Process for preparing aminoalkylpyrrolobenzoxazalkanes
    Patent number: 4107074
    Abstract: Novel aminoalkylpyrrolobenzoxazalkanes, physiologically tolerable acid addition salts thereof, method of preparing same and novel intermediates in the preparation thereof are described. These compounds are useful as analgesic agents and tranquilizers.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: August 15, 1978
    Assignee: American Hoechst Corporation
    Inventors: Richard C. Effland, Larry Davis, Wolfgang Schaub
  • Method of preparation of 3-(3-carboxy-4-hydroxyphenyl)-4,5-dihydro-2-phenylbenz (e) indole and valuable intermediates related thereto
    Patent number: 4066659
    Abstract: A novel method of preparing the valuable compound 3-(3-carboxy-4-hydroxyphenyl)-4,5-dihydro-2-phenylbenz[e]indole is described, said compound possessing antiinflammatory and analgetic activity. Also described are novel intermediates useful in the disclosed method.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: January 3, 1978
    Assignee: American Hoechst Corporation
    Inventor: Richard C. Effland
  • Piperazionalkylpyrrolobenzoxazalkanes
    Patent number: 4053599
    Abstract: Novel piperazinoalkylpyrrolobenzoxazalkanes, physiologically tolerable acid addition salts thereof and a method of preparing same are described. These compounds are useful as antihypertensive agents.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: October 11, 1977
    Assignee: American Hoechst Corporation
    Inventors: Richard C. Effland, Larry Davis, Wolfgang Schaub
  • Pyrrolo[2,1-c][1,4]benzoxazepine and benzoxazocine derivatives
    Patent number: 4045448
    Abstract: Novel pyrrolobenzoxazalkanes, physiologically tolerable acid addition salts thereof and a method of preparing same are described. Compounds of the present invention are useful as analgesic, tranquilizing and anticonvulsant agents.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: August 30, 1977
    Assignee: American Hoechst Corporation
    Inventors: Richard C. Effland, Larry Davis, Wolfgang Schaub
  • Aminoalkylpyrrolobenzoxazalkanes
    Patent number: 4029672
    Abstract: Novel aminoalkylpyrrolobenzoxazalkanes, physiologically tolerable acid addition salts thereof, method of preparing same and novel intermediates in the preparation thereof are described. These compounds are useful as analgesic agents and tranquilizers.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: June 14, 1977
    Assignee: American Hoechst Corporation
    Inventors: Richard C. Effland, Larry Davis, Wolfgang Schaub
  • Substituted N-aminoalkylpyrroles
    Patent number: 3997557
    Abstract: Substituted N-aminoalkylpyrroles of the formula: ##STR1## IN WHICH X, Z, R.sub.1, -R.sub.5 and n are as defined below, and their physiologically tolerable acid addition salts are disclosed to have antiarrhythmic, central nervous system depressant, antiinflammatory and antihypertensive activity. A process for their preparation is also disclosed.
    Type: Grant
    Filed: April 23, 1974
    Date of Patent: December 14, 1976
    Assignee: American Hoechst Corporation
    Inventors: Grover C. Helsley, Richard C. Effland, Larry Davis
  • Substituted 2-phenyl-4,6,7,8-tetrahydrofuro and 1,4,5,6,7,8-hexahydropyrrolo[3,2,-c]azepines
    Patent number: 3952025
    Abstract: Substituted 2-phenyl-4,6,7,8-tetrahydrofuro- and 1,4,5,6,7,8-hexahydropyrrolo[3,2-c]azepines and physiologically tolerable acid addition salts thereof possessing analgesic and tranquilizing properties, and a process for their preparation are described.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: April 20, 1976
    Assignee: American Hoechst Corporation
    Inventors: Richard C. Effland, Larry Davis, Grover C. Helsley