Patents by Inventor Lev Utevski

Lev Utevski 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).

  • Flame-retarted transparent plastics
    Patent number: 6632870
    Abstract: Flame-retarded transparent plastic compositions comprising polyhalgenated trimethylphenyl indan. The polyhalogenated trimethylphenyl indan is a mixture of polyhalogenated trimethylphenyl indanes having each 3 to 9 halogen atoms. The halogen may be bromine or a mixture of bromine and chlorine. The transparent plastic is selected from polycarbonate, polymethylmethacrylate, and polystyrene. The polyhalogenated trimethylphenyl indan is present in an amount of up to about 40% by weight. The transparent plastic flame-retarded material is prepared by mixing the plastic matrix with a flame-retardant effective amount of a polyhalogenated trimethylphenyl indan.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: October 14, 2003
    Assignee: Bromine Compounds Ltd.
    Inventors: Ita Finberg, Lev Utevski
  • Flame-retarded transparent plastics
    Publication number: 20010021742
    Abstract: Flame-retarded transparent plastic compositions comprising polyhalgenated trimethylphenyl indan. The polyhalogenated trimethylphenyl indan is a mixture of polyhalogenated trimethylphenyl indanes having each 3 to 9 halogen atoms. The halogen may be bromine or a mixture of bromine and chlorine. The transparent plastic is selected from polycarbonate, polymethylmethacrylate, and polystyrene. The polyhalogenated trimethylphenyl indan is present in an amount of up to about 40% by weight. The transparent plastic flame-retarded material is prpared by mixing the plastic matrix with a flame-retardant effective amount of a polyhalogenated trimethylphenyl indan.
    Type: Application
    Filed: November 29, 2000
    Publication date: September 13, 2001
    Inventors: Ita Finberg, Lev Utevski
  • Method of improving the surface compatibility of polypropylene and its compositions and articles obtained thereby
    Patent number: 5430106
    Abstract: A method of improving the surface compatibility properties of polypropylene comprises thermo-processing polypropylene together with at least one aromatic ring-polybrominated olefinic compound, in the absence of free radical initiators.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: July 4, 1995
    Assignee: Bromine Compounds Ltd.
    Inventors: Lev Utevski, Moshe Muskatel