Patents by Inventor Hristo Kolev

Hristo Kolev 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).

  • Method of preparing polyaniline films and highly self-oriented films obtained
    Patent number: 8986790
    Abstract: The present invention concerns a method for preparing polyanilines by oxidative polymerization of aniline in an aqueous acid medium, comprising at least one synthesis step carried out in the presence of a) a monomer with formula (An) RmRo—C6H3—NHR? in which Ro, Rm and R? independently of each other, represent H or a linear or branched alkyl, alkoxy, alkylcarboxy or alkylsulfonic group, containing 1 to 6 carbon atoms, b) an acid, c) an oxidizing agent and d) a salt, characterized in that the acid is formic acid. The PANI deposited and dried on a support provides films with 80% of crystalline phase, having a strong alignment of ?-? interactions parallel to the surface. The PANI and the films obtained may be used as semiconductors and/or conductors.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: March 24, 2015
    Inventors: Natalia Gospodinova, Samuel Dorey, Denis Anokhin, Dimitri Ivanov, Yuliva Romanova, Hristo Kolev
  • METHOD OF PREPARING POLYANILINE FILMS AND HIGHLY SELF-ORIENTED FILMS OBTAINED
    Publication number: 20110281098
    Abstract: The present invention concerns a method for preparing polyanilines by oxidative polymerization of aniline in an aqueous acid medium, comprising at least one synthesis step carried out in the presence of a) a monomer with formula (An) RmRo—C6H3—NHR? in which Ro, Rm and R? independently of each other, represent H or a linear or branched alkyl, alkoxy, alkylcarboxy or alkylsulfonic group, containing 1 to 6 carbon atoms, b) an acid, c) an oxidizing agent and d) a salt, characterized in that the acid is formic acid. The PANI deposited and dried on a support provides films with 80% of crystalline phase, having a strong alignment of ?-? interactions parallel to the surface. The PANI and the films obtained may be used as semiconductors and/or conductors.
    Type: Application
    Filed: March 13, 2009
    Publication date: November 17, 2011
    Inventors: Natalia Gospodinova, Samuel Dorey, Denis Anokhin, Dimitri Ivanov, Yuliva Romanova, Hristo Kolev