Patents by Inventor Theodor Denzel

Theodor Denzel 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).

  • Patent number: 4127657
    Abstract: New 4H-pyrazolo[1,5-a]pyrazolo[4',4':5,6]pyrido[3,4-e]pyrimidin-5(8H)one and new derivatives thereof have the general formula ##STR1## The compounds are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: November 28, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4127655
    Abstract: New derivatives of 8H-pyrazolo[4',3':5,6]pyrido[3,4-e]-[1,2,4]triazolo[1,5-a]pyrimidine have the general formula ##STR1## The compounds are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: November 28, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4110454
    Abstract: New derivatives of 8H-pyrazolo[4',3':5,6]pyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidine have the general formula ##STR1## The compounds are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: August 29, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4109091
    Abstract: New derivatives, and their salts, of 1,4- and 4,10-dihydro-4-oxo-pyrimido[1,2-a]benzimidazole-3-carboxylic acid amides have the general formula ##STR1## They are useful as central nervous system depressants and anti-inflammatory agents.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: August 22, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4109087
    Abstract: New 1,4- and 4,10-dihydro-4-oxo-pyrimido[1,2-a]-benzimidazole-3-carboxamides have the general formulas ##STR1## They are useful as central nervous system depressants and anti-inflammatory agents.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: August 22, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4091219
    Abstract: Amino derivatives of 1,2,3,4-tetrahydro-2-oxopyrido[2,3-b]pyrazine carboxylic acid and esters and their acid addition salts which have the general formula ##STR1## are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: May 23, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4088654
    Abstract: Derivatives of imidazo[4,5-b]pyridines having the general formula ##STR1## are disclosed. The novel compounds are useful as central nervous system depressants and anti-inflammatory agents.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: May 9, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4078064
    Abstract: New derivatives of 8H-pyrazolo[4',3':5,6]pyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidine have the general formula ##STR1## The compounds are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: March 7, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4077955
    Abstract: Amino derivatives of 1,2,3,4-tetrahydro-2-oxopyrido[2,3-b]-pyrazine carboxylic acid and esters and their acid addition salts which have the general formula ##STR1## are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: March 7, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4076712
    Abstract: New derivatives of pyrazolo[1,5-a]pyrido[2,3-d]pyrimidin-9(4H)-one and salts thereof have the general formula ##STR1## The compounds are useful as anti-inflammatory agents.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: February 28, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4075210
    Abstract: Pyrazolo[1,5-a]pyrido[4,3-d]pyrimidin-9(4H)-one and derivatives thereof have the general formula ##STR1## The compounds are useful as antiinflammatory agents.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: February 21, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4072681
    Abstract: New 3,7-dihydro and 1,7-dihydro-4H-pyrazolo[4',3':5,6]pyrido[4,3-d]pyrimidin-4-ones which have the general formula ##STR1## are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: February 7, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4072679
    Abstract: New derivatives, and their salts, of 1,4- and 4,10-dihydro-4-oxo-pyrimido[1,2-a]benzimidazole-3-carboxylic acids, esters and carboxamides have the general formulas ##STR1## They are useful as central nervous system depressants and anti-inflammatory agents.
    Type: Grant
    Filed: June 15, 1976
    Date of Patent: February 7, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4072680
    Abstract: New derivatives of pyrazolo[1,5-a]pyrido[3,2-e]-pyrimidine have the general formula ##STR1## The new compounds are useful as anti-inflammatory agents.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: February 7, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4070362
    Abstract: Amino derivatives of triazolo[4,5-b]pyridines having the general formula ##STR1## are disclosed. The novel compounds are useful as central nervous system depressants and antiinflammatory agents. In addition, the new compounds increase the intracellular concentration of adenosine 3',5'-cyclic monophosphate.
    Type: Grant
    Filed: February 21, 1974
    Date of Patent: January 24, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4070466
    Abstract: New 4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido-[3,4-e]pyrimidin-5(8H)one and new derivatives thereof have the general formula ##STR1## The compounds are useful as anti-inflammatory agents and central nervous system depressants.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: January 24, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4066644
    Abstract: New derivatives of pyrazolo[1,5-a]pyrido[3,2-e]-pyrimidine-7-carboxylic acid have the general formula ##STR1## The new compounds are useful as central nervous system depressants and as anti-inflammatory agents.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: January 3, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4066643
    Abstract: New derivatives of pyrazolo[1,5-a]pyrido[3,2-e]-pyrimidine-7-carboxylic acid have the general formula ##STR1## The new compounds are useful as central nervous system depressants and an anti-inflammatory agents.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: January 3, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4066645
    Abstract: New derivatives of pyrazolo[1,5-a]pyrido[3,4-e]-pyrimidine have the general formulas ##STR1## The compounds are useful as anti-inflammatory agents.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: January 3, 1978
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn
  • Patent number: 4061632
    Abstract: New 3,11-dihydro-6H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido[4,3-d]pyrimidin-6 -one derivatives have the general formula ##STR1## The compounds are useful as anti-inflammatory agents.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: December 6, 1977
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Theodor Denzel, Hans Hoehn