Patents by Inventor Erik G. Christensson

Erik G. Christensson 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: 4937245
    Abstract: A compound having the formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein all the symbols are defined in the specification; having valuable pharmaceutical properties, useful for the treatment of mental disorders, such as psychoses, depression and anxiety.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: June 26, 1990
    Inventors: Tomas Fex, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson, Torbjorn E. Lundstedt
  • Patent number: 4935419
    Abstract: A series of 1-piperazinecarboxamide derivatives of the following formula: ##STR1## The compounds of the present invention are neuropharmacological agents intended for the treatment of mental disorders, such as psychoses and depression.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: June 19, 1990
    Inventors: Anders K. K. Bjork, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson, Bengt K. R. Gustafsson, Tomas Fex
  • Patent number: 4778789
    Abstract: Novel compounds of formula (I), wherein R.sub.1 is selected from hydrogen, halogen; or trifluoromethyl; X is oxygen or sulfur; R.sub.2 and R.sub.3 are the same or different and selected from hydrogen or lower alkyl; m is 2 or 3; Y is oxygen or sulphur; Z is selected from: --NR.sub.4 R.sub.5, formulae (II), (III) or (IV), wherein R.sub.4 and R.sub.5 are the same or different and selected from hydrogen, alkyl, cycloalkyl, cycloalkyl-alkyl, hydroxy-alkyl, alkoxyalkyl or alkanoyloxyalkyl, phenyl or phenyl-alkyl, wherein the phenyl groups may be unsubstituted or monosubstituted with halogen or CF.sub.3 ; n is 0, 1, 2 or 3; R.sub.6 and R.sub.7 are the same or different and selected from hydrogen, lower alkyl, hydroxy, lower alkoxy or lower alkanoyloxy; p is 2 or 3; R.sub.8 and R.sub.9 are the same or different and selected from hydrogen or lower alkyl; R.sub.10 is hydrogen, lower alkyl or lower alkanoyl. The new compounds can be used for treating mental disorders.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: October 18, 1988
    Assignee: Aktiebolaget Leo
    Inventors: Tomas Fex, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson
  • Patent number: 4656175
    Abstract: This invention relates to a method for treating human beings and animals suffering from mental disorders comprising administering to said human beings and animals an effective amount of a compound for the treatment of such mental disorders comprising a compound having the formula ##STR1## wherein R is alkyl straight or branch chained having from 1 to 10 carbon atoms, cycloalkyl having from 3 to 8 carbon atoms, aralkyl having from 7 to 9 carbon atoms or phenyl unsubstituted or substituted by one to three F, Cl, Br, lower alkyl having from 1 to 5 carbon atoms, lower alkoxy having from 1 to 5 carbon atoms, alkylenedioxy having from 1 to 3 carbon atoms, --CF.sub.3 or --CN substituents, R.sub.1 -R.sub.4 are independently H, CH.sub.3, C.sub.2 H.sub.5 with cis or trans configuration provided that only two of them are other than hydrogen, and pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: April 7, 1987
    Assignee: AB Ferrosan
    Inventors: Anders K. Bjork, Erik G. Christensson
  • Patent number: 4624953
    Abstract: Compounds having the general formula ##STR1## as herein defined and pharmaceutically acceptable acid addition salts thereof. Pharmaceutical compositions containing said compounds. Methods of treatment of humans and animals by such compounds and compositions.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: November 25, 1986
    Inventors: Anders K. Bjork, Erik G. Christensson
  • Patent number: 4492698
    Abstract: Novel compounds of the formula ##STR1## wherein R' is selected from the group consisting of alkyl straight or branch chained having from 2 to 10 carbon atoms, cycloalkyl having from 3 to 8 carbon atoms, aralkyl having from 7 to 9 carbon atoms, phenyl and substituted phenyl wherein the substituents of the substituted phenyl are selected from the group consisting of one to three F, Cl, Br, lower alkyl having from 1 to 5 carbon atoms, lower alkoxy having from 1 to 5 carbon atoms, alkylenedioxy having from 1 to 3 carbon atoms, --CF.sub.3 and --CN and pharmaceutically acceptable salts thereof which have been found to have utility for therapeutic treatment of mental disorders by reducing anti-aggressive behavior and a process for making the compounds.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: January 8, 1985
    Inventors: Anders K. Bjork, Aina L. Abramo, Erik G. Christensson
  • Patent number: 4447433
    Abstract: Compounds having the general formula ##STR1## as herein defined and pharmaceutically acceptable acid addition salts thereof. Pharmaceutical compositions containing said compounds. Methods of treatment of humans and animals by such compounds and compositions.
    Type: Grant
    Filed: September 15, 1982
    Date of Patent: May 8, 1984
    Assignee: AB Ferrosan
    Inventors: Anders K. K. Bjork, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson
  • Patent number: 4385057
    Abstract: Compounds having the general formula ##STR1## as herein defined and pharmaceutically acceptable acid addition salts thereof. Pharmaceutical compositions containing said compounds. Methods of treatment of humans and animals by such compounds and compositions.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: May 24, 1983
    Assignee: AB Ferrosan
    Inventors: Anders K. K. Bjork, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson
  • Patent number: 4344952
    Abstract: A method of treating diarrhoea and promoting weight gain in mammals by administration of an effective amount of a compound selected from the group consisting of 4-fluoro-.gamma.-(4-alkylpiperidino)-butyrophenone of the formula ##STR1## wherein R is lower alkyl having 1 to 6 carbon atoms, or pharmaceutically acceptable acid addition salts thereof.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: August 17, 1982
    Assignee: AB Ferrosan
    Inventors: Sven E. H. Hernestam, Kjell B. Martinsson, Erik G. Christensson, Nils-Goran E. Olsson
  • Patent number: 4308387
    Abstract: Compounds having the general formula ##STR1## as herein defined and pharmaceutically acceptable acid addition salts thereof. Pharmaceutical compositions containing said compounds. Methods of treatment of humans and animals by such compounds and compositions.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: December 29, 1981
    Assignee: AB Ferrosan
    Inventors: Anders K. K. Bjork, Knut G. Olsson, Aina L. Abramo, Erik G. Christensson