Patents by Inventor Martina Brandt

Martina Brandt 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).

  • Optical fibers
    Patent number: 6950587
    Abstract: An optical fiber that contains a core of polycarbonate and a coating is disclosed. The coating is a polymer that contains structural units conforming to specified formulae. Also disclosed is a process for producing the inventive fibers and their use for transmitting optical signals.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: September 27, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt, Wolfgang Ebert, Hans-Josef Behrens, Wilfried Haese, Thomas Föllinger, Heinz-Dieter Brandt
  • Optical fibers
    Publication number: 20050192425
    Abstract: Optical fibers suitable for transmission of optical signals and comprising a core that contains polycarbonate are disclosed. The polycarbonate is characterized in its low content of insoluble particles.
    Type: Application
    Filed: April 12, 2005
    Publication date: September 1, 2005
    Inventors: Wolfgang Ebert, Hans-Josef Behrens, Heinz-Dieter Brandt, Martina Brandt, Franziska Brandt, Inken Brandt, Thomas Follinger, Wilfried Haese
  • Optical fiber
    Patent number: 6907174
    Abstract: An optical fiber that contains a core of polycarbonate and a coating is disclosed. The coating is a polymer that contains structural units conforming to specified formulae. Also disclosed is a method for preparing the inventive fibers and the use thereof for transmitting signals.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: June 14, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Ebert, Hans-Josef Behrens, Inken Margarethe Brandt, Thomas Föllinger, Martina Brandt, Franziska Hanne Brandt, Heinz-Dieter Brandt, Wilfried Haese
  • Light guide
    Publication number: 20040151456
    Abstract: An optical fiber that contains a core of polycarbonate and a coating is disclosed. The coating is a polymer that contains structural units conforming to specified formulae. Also disclosed is a process for producing the inventive fibers and their use for transmitting optical signals.
    Type: Application
    Filed: October 9, 2003
    Publication date: August 5, 2004
    Inventors: Heinz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt, Wolfgang Bert, Hans-Josef Behrens, Wilfried Haese, Thomas Follinger
  • Optical waveguide
    Publication number: 20040120686
    Abstract: A process for producing optical fibers is disclosed. The fibers that are characterized in having a core that contain an amorphous transparent thermoplastic polymer are prepared by a process entailing melting the polymer in an apparatus the surfaces of which that come into contact with the molten polymer are first rendered at least partially inert.
    Type: Application
    Filed: August 27, 2003
    Publication date: June 24, 2004
    Inventors: Hans-Josef Behrens, Ebert Wolfgang, Thomas Follinger, Wolfgang Alewelt, Heniz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt
  • Method for producing stable, colorless butadiene rubbers
    Publication number: 20040092649
    Abstract: Stable, colourless diene rubbers stabilised with phenolic compounds are produced by adding one or more phenolic compounds (stabilisers) to the polymer blend in a subsequent process step after polymerisation of the monomers used and adjusting the pH value and oxygen content such that the polymer blend displays a pH value in the range from 4 to 11 and the oxygen content is 0 to 0.3 ppm, relative to the water content of the polymer blend.
    Type: Application
    Filed: April 2, 2003
    Publication date: May 13, 2004
    Inventors: Heinz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt, Rolf Peter, Bernd Stollfuss
  • Optical fiber
    Publication number: 20040057694
    Abstract: The invention relates to optical fibres comprising a core that contains a polycarbonate and a coating that consists of special polyacrylates or polymethacrylates and stabilizers. The invention also relates to a method for producing said optical fibres, to the use of the optical fibres for transmitting optical signals in means of transport and to means of transport containing said optical fibres. The stabilizers are selected from the group consisting of organic phosphites and organic sulphides.
    Type: Application
    Filed: August 25, 2003
    Publication date: March 25, 2004
    Inventors: Wolfgang Ebert, Hans-Josef Behrens, Heinz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt, Thomas Follinger, Wilfried Haese
  • Polycarbonate optical fibre
    Publication number: 20040057693
    Abstract: Optical fibers suitable for transmission of optical signals and comprising a core that contains polycarbonate are disclosed. The polycarbonate is characterized in its low content of insoluble particles.
    Type: Application
    Filed: July 14, 2003
    Publication date: March 25, 2004
    Inventors: Wolfgang Ebert, Hans-Josef Behrens, Heniz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt, Thomas Follinger, Wilfried Haese
  • Method for polymerizing conjugated diolefins (dienes) with catalysts of rare earths in the presence of vinyl aromatic solvents
    Publication number: 20040030071
    Abstract: The present invention provides a method for polymerizing conjugated diolefins in the presence of a catalyst of the rare earth metals and in the presence of an aromatic vinyl compound. The diolefins produced thereby may find use in producing rubber-modified molding materials, such as ABS and HIPS.
    Type: Application
    Filed: December 11, 2002
    Publication date: February 12, 2004
    Inventors: Heike Windisch, Thomas Schnieder, Gisbert Michels, Gerd Sylvester, Pierre Vanhoorne, Heinz-Dieter Brandt, Martina Brandt, Franziska Hanne Brandt, Inken Margarethe Brandt