Patents by Inventor Ib S. Vangedal

Ib S. Vangedal 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).

  • Derivatives of amidinopenicillanic acid
    Patent number: 4246262
    Abstract: The present invention relates to new 6.beta.-amidino-penicillanic acids of the formula: ##STR1## in which X is oxygen or sulphur, --A-- is aliphatic hydrocarbon, or a single bond, --B-- is aliphatic hydrocarbon, or a single bond; R.sub.1 and R.sub.2 stand for hydrogen, lower alkyl, phenyl or phenyl-lower alkyl; or R.sub.2 is acyl or guanyl; or R.sub.1 and R.sub.2 together with the nitrogen atom can form a monocyclic, saturated ring or represent ##STR2## in which R.sub.3 and R.sub.4 each stands for hydrogen, lower alkyl, phenyl, or phenyl-lower alkyl, or R.sub.3 and R.sub.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: January 20, 1981
    Assignee: Leo Pharmaceutical Products, Ltd. A/S
    Inventor: Ib S. Vangedal