Patents by Inventor Ole Bent I. Nielsen

Ole Bent I. Nielsen 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).

  • Substituted quinolines and medicinal use thereof
    Patent number: 5110819
    Abstract: The present invention relates to hitherto unknown compounds of formula, in which formula R.sub.1 stands for hydrogen, straight or branched, saturated or unsaturated, unsubstituted or substituted C.sub.1 --C.sub.8 --alkyl, aryl or for ar--C.sub.1 --C.sub.4 --alkyl, aryl or an being unsubstituted or substituted phenyl, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are the same or different and stand for hydrogen, halogen, pseudo halogen, cyano, nitro, amino, carboxy, carbalkoxy, carbamyl, hydroxy, alkyl, alkoxy; n and m are the same or different and stand for an integer from 0-6; provided that n cannot be zero when A stands for carboxy and X and Q both stand for a bond; X stands for a bond or for O, S, S(O), S(O).sub.2 or for NR.sub.8 where R.sub.8 is defined as R.sub.1 above; Q stands for a bond of for straight or branched, C.sub.1 --C.sub.6 --alkylene; A stands for an acidic group, e.g.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: May 5, 1992
    Assignee: Leo Pharmaceutical Products Ltd.
    Inventors: Ian Ahnfelt-Ronne, Erik T. Hansen, Dorte Kirstein, Ole Bent I. Nielsen, Schneur Rachlin