Patents by Inventor Leonid B. Volodarsky

Leonid B. Volodarsky 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).

  • Process for the preparation of imidazoline nitroxyl
    Patent number: 5849929
    Abstract: A process is provided for the preparation of imidazoline derivatives such as imidazoline nitroxyls and 1-hydroxy imidazoline.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: December 15, 1998
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Leonid B. Volodarsky, Stephen M. Fagan
  • Substituteed tetrahydropyrimidine derivatives and their use as polymerization inhibitors for vinyl aromatic compounds
    Patent number: 5847035
    Abstract: The present invention is directed to substituted tetrahydropyrimidine derivatives of the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, are hydrogen or alkyl aryl, cycloalkyl, alkaryl, aralkyl or heterocyclic, or substituted derivative thereof, R.sup.6 or R.sup.7 can additionally be --OH or --NR.sup.8 wherein R.sup.8 is hydrogen, alkyl, aryl, cycloalkyl, alkaryl, aralkyl or heterocyclic, or substituted derivative thereof, or R.sup.6 and R.sup.7 together can be .dbd.O or .dbd.NOH, and any two R groups on the same or adjacent carbon atoms can be joined in a cyclic configuration, and X is oxyl or hydroxy, it being provided that at least one of R.sup.2 and R.sup.3 and at least one of R.sup.4 and R.sup.5 are other than hydrogen.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: December 8, 1998
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Leonid B. Volodarsky, Vilen Kosover