Patents by Inventor Ferenc Csanda

Ferenc Csanda 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 stabilizing aqueous solutions used in the preparation of hydrophilic polymeric gels
    Patent number: 4492494
    Abstract: The invention relates to a process for stabilizing an aqueous gel-forming system comprising one or more water-soluble acrylic monomer as gellifying agent, methylenebis-acrylamide co-monomer and/or one or more mono- or bivalent aldehyde as cross-linking agent, a redox catalyst system containing an alkali metal and/or ammonium persulfate as oxidizing component along with one or more amine compound as reducing component, furthermore optionally one or more water-soluble polymer for adjusting the viscosity of the solution and/or modifying the gel structure. According to the invention said gel-forming system is stabilized by saturating it with molecular oxygen.The invention relates further to a process for improving the strength and impermeability of particulate materials and/or solid articles.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: January 8, 1985
    Assignees: Magyar Tudomanyos Akademia Termeszettudomanyi Kutato Laboratorium, Foldmero es Talajvizsgalo Vallalat
    Inventors: Tamas Szekely, Ferenc Csanda, Gabor Nagy, Gyozo Czerny