Patents by Inventor Clemens Bisjack

Clemens Bisjack 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 of making flame retardant cellulosic man-made fibers
    Patent number: 9988743
    Abstract: The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: June 5, 2018
    Assignee: Lenzing AG
    Inventors: Hartmut Rüf, Clemens Bisjack, Gert Kroner
  • FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS
    Publication number: 20140037933
    Abstract: The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention.
    Type: Application
    Filed: October 10, 2013
    Publication date: February 6, 2014
    Applicant: LENZING AG
    Inventors: Hartmut Rüt, Clemens Bisjack, Gert Kroner
  • FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS
    Publication number: 20130337715
    Abstract: The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention.
    Type: Application
    Filed: December 9, 2011
    Publication date: December 19, 2013
    Applicant: LENZING AG
    Inventors: Hartmut Rüf, Clemens Bisjack, Gert Kroner