Patents by Inventor Joseph Bercovici

Joseph Bercovici 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 5-hydroxyisophtalic acids
    Patent number: 5703274
    Abstract: A process for the preparation of 5-hydroxyisophthalic acid (5-HIPA) that comprises hydrolyzing a starting material chosen from among 5-bromoisophthalic acid (5-BIPA), mixtures of 5-BIPA and dibromoisophthalic acid isomers, and salts of thereof in an aqueous alkaline solution, in the presence of a catalytically effective amount of a copper compound catalyst and in a temperature range of between 100.degree. and 270.degree. C.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: December 30, 1997
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Joseph Bercovici, Jakob Oren