Patents by Inventor Andrey Lubentsov

Andrey Lubentsov 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 for producing halogenated polysilanes
    Patent number: 9139702
    Abstract: A process for preparing a halogenated polysilane HpSin?pX(2n+2)?p with n=1 to 50; 0?p?2n+1, and X=F, Cl, Br, I, as an individual compound or a mixture of compounds, from a mixture which includes the halogenated polysilane or in which the halogenated polysilane is formed, additionally includes boron-containing impurities, wherein a) the mixture is admixed with at least 1 ppbw (parts per billion per weight) of a siloxane-forming oxidizing agent or siloxane, the boron-containing impurities forming compounds having a volatility and/or solubility different from the halogenated polysilanes, b) the halogenated polysilane is separated from the compound(s), and c) not more than 1 ppmw of water and not less than 1 ppb of siloxanes are present.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: September 22, 2015
    Assignee: Spawnt Private S.a.r.l.
    Inventors: Christian Bauch, Sven Holl, Rumen Deltschew, Javad Mohsseni, Andrey Lubentsov
  • METHOD FOR PRODUCING HALOGENATED POLYSILANES
    Publication number: 20120319041
    Abstract: A process for preparing a halogenated polysilane HpSin?pX(2n+2)?p with n=1 to 50; 0?p?2n+1, and X=F, Cl, Br, I, as an individual compound or a mixture of compounds, from a mixture which includes the halogenated polysilane or in which the halogenated polysilane is formed, additionally includes boron-containing impurities, wherein a) the mixture is admixed with at least 1 ppbw (parts per billion per weight) of a siloxane-forming oxidizing agent or siloxane, the boron-containing impurities forming compounds having a volatility and/or solubility different from the halogenated polysilanes, b) the halogenated polysilane is separated from the compound(s), and c) not more than 1 ppmw of water and not less than 1 ppb of siloxanes are present.
    Type: Application
    Filed: December 6, 2010
    Publication date: December 20, 2012
    Applicant: Spawnt Private S.à.r.l.
    Inventors: Christian Bauch, Sven Holl, Rumen Deltschew, Javad Mohsseni, Andrey Lubentsov