Patents by Inventor Marta Sotinee Tolvay

Marta Sotinee Tolvay 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).

  • Sustained release pharmaceutical compositions
    Patent number: 4539199
    Abstract: Pharmaceutical compositions for sustained release of pharmaceutical compounds comprising a reaction product of a water soluble salt of a pharmaceutically active compound containing a primary, secondary or tertiary amino group, and an alkali or ammonium salt of a synthetic copolymer containing an acid group, and selected from the group consisting of methacrylic acid/methacrylic acid methyl ester, methacrylic acid/acrylic acid methyl ester and methacrylic acid/acrylic acid methyl ester/methacrylic acid methyl ester copolymers and a pharmaceutically acceptable excipient. The water soluble salt of a pharmaceutically active compound containing a primary, secondary or tertiary amino group is reacted in aqueous medium with an alkali or ammonium salt of a copolymer selected from the group consisting of the above mentioned copolymers, and the resulting product is converted into a pharmaceutical composition.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: September 3, 1985
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Erno Orban, Janos Borvendeg, Laszlo Nagy, Marta Sotinee Tolvay, Erzsebet Bander