Patents by Inventor Ovart Nitidandhaprabhas

Ovart Nitidandhaprabhas 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).

  • Pigment compositions including intaglio printing ink waste
    Patent number: 5199981
    Abstract: A pigment composition is disclosed, obtained from intaglio or engraved steel die printing ink wastes. The wastes containing pigment, ink resins, extenders, and other minor components, are dried, ground and sieved to give a dry pigment composition. This pigment composition is optionally blended with plasticizers to give a pasty composition.These compositions are useful to color and plasticize synthetic plastics materials such as sheetings, PVC leather and films.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: April 6, 1993
    Assignee: Sicpa Holding SA
    Inventors: Maurice A. Amon, Ovart NitidandhaPrabhas
  • Treatment of mange
    Patent number: 4017628
    Abstract: Compounds having the general formula: ##STR1## whrein R.sup.1, R.sup.2 and R.sup.3 independently represent substituents selected from the group consisting of hydrogen, halogen, alkyl groups, alkoxy groups, aromatic groups, heterocyclic groups and any other functional groups.The compounds may be prepared by the reaction of substantially equimolar portions of 2-aminopyridines with an aromatic aldehyde and thioglycollic acid.The compounds are useful for treating skin diseases in animals such as mange in dogs.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: April 12, 1977
    Inventor: Ovart Nitidandhaprabhas