Patents by Inventor Dimitri Toptchiev

Dimitri Toptchiev 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).

  • Biocidal polymers based on guanidine salts
    Patent number: 7001606
    Abstract: The invention relates to biocidal polymers based on guanidine salts characterized in that they are representatives of a number of polyoxyalkylene guanidines and their salts and are a product of a polycondensation of guanidine salts with diamines which include two amino groups and polyoxyalkylene chains therebetween. In addition to a high bactericidity, these new polymer products are provided with a relatively low toxicity, an increased hydrophily, a quick and complete dilution in water, increased values of relative molar mass, and distinct characteristics of polymer surface active substances.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: February 21, 2006
    Assignee: P.O.C. Oil Industry Technology Beratungsges m.b.H.
    Inventors: Oskar J. Schmidt, Andreas Schmidt, Dimitri Toptchiev
  • Biocidal polymers based on guanidine salts
    Publication number: 20030113291
    Abstract: The invention relates to biocidal polymers based on guanidine salts characterized in that they are representatives of a number of polyoxyalkylene guanidines and their salts and are a product of a polycondensation of guanidine salts with diamines which include two amino groups and polyoxyalkylene chains therebetween.
    Type: Application
    Filed: October 31, 2002
    Publication date: June 19, 2003
    Inventors: Oskar J. Schmidt, Andreas Schmidt, Dimitri Toptchiev