Patents by Inventor Torsten Derr

Torsten Derr 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).

  • Patent number: 6906124
    Abstract: A translucent thermoplastic molding composition containing polycarbonate, phosphorous compound and a fluorinated polyolefin is disclosed. Characterized in its excellent flame proofing, optical properties and resistance to chemicals the composition is suitable for making articles that in the course of use come in contact with solvents lubricants and cleaning compositions.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: June 14, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Derr, Thomas Eckel, Michael Zobel, Dieter Wittmann, Andreas Seidel
  • Patent number: 6906122
    Abstract: The present invention provides thermoplastic polycarbonate blends which contain phosphonate amines and special graft polymers, which are prepared using redox initiator systems, and which are characterised by improved mechanical properties such as notched impact resistance, weld line strength and stress crack resistance.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: June 14, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6831120
    Abstract: The present invention relates to polycarbonate blends containing phosphonate amine and inorganic nanoparticles, which have improved flame proofing and improved mechanical properties such as low-temperature impact strength, elongation at break, weld line strength and stress cracking resistance as well as an improved yellowness index.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: December 14, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6784232
    Abstract: A thermoplastic molding composition that contains a resinous blend with phosphonate amine is disclosed. The resinous blend contains polycarbonate and a graft polymer having a graft substrate rubber selected from among silicone, EP(D)M and acrylate rubbers. The composition exhibits exceptional flame resistance and good mechanical properties such as stress cracking resistance and ease of flow while exhibiting high heat resistance.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: August 31, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6767944
    Abstract: A flame retardant, chemical and impact resistant, thermoplastic molding composition is disclosed. The composition that contains (A) an aromatic polycarbonate and/or polyester carbonate, (B) a graft polymer, (C) an oligophosphate conforming to a specific formulaEINBETTEN, (D) an anti-drip agent, and (E) a polyhydroxy ether is suitable for preparing molded articles.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: July 27, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Andreas Seidel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6767943
    Abstract: Flame resistant graft polymer-modified polycarbonate molding compositions are described. The polycarbonate molding compositions comprise phosphorous compounds, and a coagulated mixture of flourinated polyolefins or precompound fluorinated polyolefins. Polycarbonate molding compositions according the present invention are flame retardant, and have desirable mechanical properties, e.g., notched impact strength and elongation at break.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: July 27, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Michael Zobel, Dieter Wittmann, Torsten Derr, Bernd Keller
  • Patent number: 6756433
    Abstract: The present invention relates to polycarbonate moulding compositions provided with phosphonate amines and phosphorus compounds, which moulding compositions exhibit excellent flame protection and very good mechanical properties, such as joint line strength or modulus of elasticity, and a good crude shade.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: June 29, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6753364
    Abstract: A flame retardant molding composition is disclosed. The composition that contains polycarbonate and/or polyester carbonate and a phosphonate amines is characterized by its good level of mechanical properties, especially a high heat resistance, and exhibits low-juicing. An embodiment wherein the composition further contains a graft polymer is also disclosed.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: June 22, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Patent number: 6737465
    Abstract: A thermoplastic molding composition comprising polycarbonate, an impact modifier, a phosphorus-containing flameproofing agent, and high purity talc is disclosed. The composition offers flame resistance for molded parts having small wall thickness, improved rigidity and resistance to stress cracking. The talc has MgO content of 30.5 to 32 wt. %, SiO2 content of 60 to 62.5 wt. % and Al2O3 content lower than 0.7 wt. % and d50 value less than or equal to 2.5 &mgr;m.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: May 18, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel, Michael Zobel, Torsten Derr, Dieter Wittmann
  • Patent number: 6727301
    Abstract: A graft polymer-modified thermoplastic polycarbonate molding composition is described. The thermoplastic polycarbonate molding composition comprises a phosphorous compound or a mixture of phosphorous compounds. Thermoplastic molding compositions according to the present invention are flame resistant, and have desirable mechanical properties and elevated heat resistance.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: April 27, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Michael Zobel, Dieter Wittmann, Torsten Derr, Manfred Ă–ller
  • Publication number: 20040047503
    Abstract: A process for selecting similar colors is disclosed. The process includes the steps of (i) inputting a first color co-ordinates of a first color, and (ii) selecting a color having second color co-ordinates that are similar with respect to the first color co-ordinates, and (iii) displaying a first color area for the first color on a screen, and (iv) displaying a second color areas for the second color on the screen, and (v) selecting one of the second color areas, and (vi) shifting the selected second color area to a region of the first color area to produce a color edge. Also disclosed are a computer program product having programming means for executing the relevant steps and a computer system comprising relevant means.
    Type: Application
    Filed: July 7, 2003
    Publication date: March 11, 2004
    Inventors: Torsten Derr, Jurgen Monnerjahn, Ulrich Scheper
  • Publication number: 20030191744
    Abstract: The invention relates to a computer system for knowledge management with a first database means for storing documents and meta-information on documents, a second database means for storing user data, a means for accessing an external data source for loading external documents and storing external documents in the first database means, a first program means for the inputting a search request by an internal client computer, a second program means for adding a document to the first database means by the internal client computer, a third program means for inputting an evaluation for a document of the first database means by an internal client computer, a fourth program means for awarding and storing bonus points to the credit of a user as a function of user behavior.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 9, 2003
    Inventors: Torsten Derr, Paul-Johannes Mayska, Hakan Colakoglu, Frank Schnieders, Thomas Kraft, Georg Heger, Ralf Pakull
  • Publication number: 20030182176
    Abstract: A method of computer-supported assortment optimization is described. The method includes: (a) inputting a first property profile for conversion candidates; (b) inputting a second property profile for conversion targets; (c) inputting at least one similarity criterion of at least one property of two comparable products of an assortment; (d) identifying, from the assortment, (i) all conversion candidates which correspond to said first property profile, and (ii) all conversion targets which correspond to said second property profile; (e) testing, for each conversion candidate, each of the conversion targets to determine whether said at least one similarity criterion is fulfilled, thereby identifying a conversion possibility for each conversion candidate; and (f) outputting a set of conversion possibilities for each of said conversion candidates. Also described is a computer program and a computer system which may be used to execute the method of the present invention.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 25, 2003
    Inventors: Jurgen Monnerjahn, Torsten Derr, Ulrich Scheper
  • Publication number: 20030158304
    Abstract: The present invention relates to flame-resistant translucent polycarbonate moulding compositions which comprise oligophosphates and specific fluorinated polyolefins and have an excellent flameproofing and resistance to chemicals.
    Type: Application
    Filed: November 25, 2002
    Publication date: August 21, 2003
    Inventors: Torsten Derr, Thomas Eckel, Michael Zobel, Dieter Wittmann, Andreas Seidel
  • Publication number: 20030083419
    Abstract: The present invention relates to polycarbonate compositions filled with talc which, in addition to excellent flame resistance, are distinguished even at small wall thicknesses by improved rigidity, good resistance to stress cracking, that is to say resistance to chemicals, and by low tool abrasion and low coating formation during processing.
    Type: Application
    Filed: June 21, 2002
    Publication date: May 1, 2003
    Inventors: Andreas Seidel, Thomas Eckel, Michael Zobel, Torsten Derr
  • Patent number: 6528561
    Abstract: The present invention relates to polycarbonate-ABS moulding compositions provided with phosphonate amines, which moulding compositions exhibit excellent flame protection and very good processing properties, such as improved flow properties, improved modulus of elasticity and reduced formation of a coating on the tool, the graft polymer being prepared by means of mass, solution or mass-suspension polymerization processes.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: March 4, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
  • Publication number: 20020161078
    Abstract: A flame retardant, chemical and impact resistant, thermoplastic molding composition is disclosed.
    Type: Application
    Filed: February 21, 2002
    Publication date: October 31, 2002
    Inventors: Michael Zobel, Andreas Seidel, Thomas Eckel, Torsten Derr, Dieter Wittmann