Patents by Inventor Felix Geissmann

Felix Geissmann 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: 4668786
    Abstract: New derivatives of theophylline having the formula ##STR1## wherein R is hydrogen or a hydroxy group, and n is an integer of 0.ltoreq.n.ltoreq.3 and/or the pharmaceutically acceptable, acid addition salts thereof, exhibit in addition to other properties, histamine-serotinine- bradykynine- antagonistic, anti-anaphylactic and .beta.-adrenergic stimulating effects.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: May 26, 1987
    Assignee: Siegfried Aktiengesellschaft
    Inventors: Kurt Thiele, Felix Geissmann, Ludwig Zirngibl, Ulrich Jahn
  • Patent number: 4603204
    Abstract: New derivatives of theophylline having the formula ##STR1## in which R denotes hydrogen or OH, n the numbers 0 or 1, X either >CH-- or >N--, Y either --O-- or --CO-- and R a five membered or six membered aryl ring or hetero-aryl ring, that is substituted in given cases with halogen, short chain alkyl groups, alkoxy groups or halogen-alkyl, and exhibit in addition to other properties, histamine-, serotinine- bradykynine- antagonistic, anti-anaphylactic and -adrenergic stimulating effects.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: July 29, 1986
    Assignee: Siegfried Aktiengesellschaft
    Inventors: Kurt Thiele, Felix Geissmann, Ludwig Zirngibl, Ulrich Jahn
  • Patent number: 4526898
    Abstract: 4-(2-Imidazolin-2-yl-amino)-2-methyl-indazole is a highly selective and effective .alpha..sub.2 -antagonist, .alpha..sub.1 -partial agonist and .alpha..sub.1s -agonist and displays anti-hypertensive activity and antagonistic activity on adrenaline and noradrenaline. It is useful as an .alpha.-adrenoceptor influencing and as an anti-hypertensively active drug.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: July 2, 1985
    Assignee: Siegfried Aktiengesselschaft
    Inventors: Istvan Molnar, Kurt Thiele, Felix Geissmann, Ulrich Jahn
  • Patent number: 4436913
    Abstract: 1H- and 2H- indazole derivatives and pharmaceuticals containing these blood-pressure lowering 1H- and 2H- indazole derivatives of the formula ##STR1## and their acid addition salts, wherein R1 may be in position 1 or position 2 on the nitrogen atoms in formula I. The groups R1, R2 and R3 represent hydrogen or the usual lower molecular groups. The R group is a 2-imidazolinylamino group or a 3,4,5,6-tetryhydropyrimidinylamino group, wherein these groups may also be present in their tautomeric forms. These groups may also be in an aryl group in the R1 group, in which case the R group may also be a halogen atom. R may only represent one of the heterocyclic secondary or tertiary amino groups in the 4 or 7 position for the 1H- indazole derivatives when the R1 group is simultaneously an aryl or an aralkyl group.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: March 13, 1984
    Assignee: Siegfried Aktiengesellschaft
    Inventors: Istvan Molnar, Kurt Thiele, Felix Geissmann, Ulrich Jahn