Patents by Inventor Jurgen Jachmann

Jurgen Jachmann 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: 7503503
    Abstract: A card laminate is produced from a centrally disposed foil laminate (1) consisting of an interior layer (2) with a metal layer (3) and with two exterior transparent plastic layers (4a, 4b), and two exterior plastic films (5a, 5b) of which at least the plastic film (5a) overlying the metal layer (3) is transparent and carries a print (6a). If the print (6a) is on the exterior, a transparent cover layer (7a) is furthermore provided. Materials and layer thicknesses are preferably selected symmetrically to the interior, metallized layer (2, 3) in order to reduce warping effects.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: March 17, 2009
    Assignee: Giesecke & Devrient GmbH
    Inventors: Josef Riedl, Jürgen Jachmann
  • Publication number: 20050247795
    Abstract: A card laminate is produced from a centrally disposed foil laminate (1) consisting of an interior layer (2) with a metal layer (3) and with two exterior transparent plastic layers (4a, 4b), and two exterior plastic films (5a, 5b) of which at least the plastic film (5a) overlying the metal layer (3) is transparent and carries a print (6a). If the print (6a) is on the exterior, a transparent cover layer (7a) is furthermore provided. Materials and layer thicknesses are preferably selected symmetrically to the interior, metallized layer (2, 3) in order to reduce warping effects.
    Type: Application
    Filed: May 5, 2005
    Publication date: November 10, 2005
    Inventors: Josef Riedl, Jurgen Jachmann
  • Patent number: 5204433
    Abstract: Curable organopolysiloxanes with epoxy groups are disclosed which contain additionally at least one group of the formula[--O--((C.sub.n H.sub.2n O--).sub.x).sub.y ].sub.z R.sup.3 --O--((C.sub.n H.sub.2n O--).sub.x).sub.y HwhereinR.sup.3 is a divalent alkylene group with 2 to 11 carbon atoms,z is 0 or 1y is 0 or 1z+y is 1 or 2n has an average value of 2 to 3 in the average molecule, the absolute value of n being 2, 3 or 4 andx has a value of 1 to 200.The organopolysiloxanes which contain the additional group are useful as curable coating agents with adhesive properties when used alone or in admixture with curable compounds which have epoxy groups, particularly organopolysiloxanes which contain epoxy groups, but are free of the aforementioned additional group. The organopolysiloxanes are used in combination with catalytically acting curing agents.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: April 20, 1993
    Assignee: Th. Goldschmidt AG
    Inventors: Dieter Wewers, Christian Weitemeyer, Jurgen Jachmann
  • Patent number: 5187251
    Abstract: Organopolysiloxanes are disclosed which contain, aside from methyl groups, alkyl groups with 1 to 20 carbon atoms, aryl groups or aralkyl groups, epoxy groups which are linked over Si--C bonds to silicon atoms of the polysiloxanes, and R.sup.3 OH groups, R.sup.3 being a divalent alkylene groups with 3 to 11 carbon atoms. The organopolysiloxanes have good compatibility with photoinitiators and adhesion and release properties which can be adjusted for the intended application by coordinating the long chain alkyl groups, the epoxy groups and the --R.sup.3 OH groups.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: February 16, 1993
    Assignee: Th. Goldschmidt AG
    Inventors: Jurgen Jachmann, Christian Weitemeyer, Dietmar Wewers
  • Patent number: 5154892
    Abstract: A method and apparatus are disclosed for achieving and maintaining an inert atmosphere as oxygen-deficient as possible in a treatment chamber, having a reaction zone, particularly an irradiation chamber, traversed by a length of material, wherein the length of material is supplied to the chamber through an inlet channel and conducted from the chamber through an outlet channel. A circulating inert gas stream, which detaches the entrained gas boundary layer held by the material, is moved countercurrently to the length of material in the inlet channel and is supplemented in a controlled manner with fresh inert gas in such amount that a given maximum oxygen concentration is not exceeded in the reaction zone and the flow rate of the inert gas stream is controlled, so that the pressure before the exit gap of the outlet channel is the same or slightly higher than the surrounding pressure.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: October 13, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Gerhard Luhmann, Theodor Selbach, Jurgen Jachmann
  • Patent number: 5079045
    Abstract: A method and apparatus are disclosed for achieving and maintaining an inert atmosphere as oxygen-deficient as possible in a treatment chamber, having a reaction zone, particularly an irradiation chamber, traversed by a length of material, wherein the length of material is supplied to the chamber through an inlet channel and conducted from the chamber through an outlet channel. A circulating inert gas stream, which detaches the entrained gas boundary layer held by the material, is moved countercurrently to the length of material in the inlet channel and is supplemented in a controlled manner with fresh inert gas in such amount that a given maximum oxygen concentration is not exceeded in the reaction zone and the flow rate of the inert gas stream is controlled, so that the pressure before the exit gap of the outlet channel is the same or slightly higher than the surrounding pressure.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: January 7, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Gerhard Luhmann, Theodor Selbach, Jurgen Jachmann
  • Patent number: 5034491
    Abstract: A (meth)acrylate ester-modified organopolysiloxane composition, which is composed of several fractions of equilibrated (meth)acrylate ester-modified organopolysiloxanes that differ in the average number of silicon atoms in the mixture of molecules, is disclosed which contains60 to 95% by weight of a modified organopolysiloxane A having, on the average, 5 to 50 silicon atoms and5 to 40% by weight of a modified organopolysiloxane B having, on the average, at least 50 silicon atoms,with the proviso that the number of silicon atoms in the average molecule of the modified organopolysiloxane B is at least twice as large as the number of silicon atoms in the average molecule of the modified organopolysiloxane A. The organopolysiloxane mixtures have improved abhesive properties.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: July 23, 1991
    Assignee: Th. Goldschmidt AG
    Inventors: Dietmar Wewers, Christian Weitemeyer, Jurgen Jachmann
  • Patent number: 4978726
    Abstract: Novel polysiloxanes with (meth)acrylate groups and monocarboxylate groups and their use as radiation-curable abhesive coating matrials are disclosed. The modified polysiloxanes adhere well to the support that is to be coated and can be cured at a high rate on the support. The cured coating has good chemical and physical stabilities and a high flexibility. The abhesive properties can be adapted to the chemical character of the adhesives, so that the desired degree of abhesiveness is obtained.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: December 18, 1990
    Assignee: Th. Goldschmidt AG
    Inventors: Hardi Dohler, Jurgen Jachmann, Christian Weitemeyer, Dietmar Wewers
  • Patent number: 4908274
    Abstract: Polysiloxanes with (meth)acrylate ester groups linked over SiC groups are disclosed which are obtainable by the reaction of epoxy-functional polysiloxanes of the general formula ##STR1## in which R.sup.1 are the same or different low molecular alkyl groups with 1 to 4 carbon atoms or phenyl groups,R.sup.2 is the same as R.sup.1 or presents the R.sup.3 group 70 to 100% of the R.sup.3 groups being epoxy functional groups and 30 to 0% being alkyl groups with 2 to 20 carbon atoms or hydrogen, with the proviso that the average molecule contains at least 1.5 epoxy groups,a has a value of 1 to 1,000 andb a value of 0 to 10;with such amounts of an acid mixture, comprising(a) 10 to 90 mole percent of (meth)acrylic anhydride and(b) 90 to 10 mole percent of (meth)acrylic acid,that the sum of (a) and (b) adds up to 100 mole percent, and that there are present 0.8 to 1.9n and preferably 1.1 to 1.9n acid equivalents per n epoxide equivalents.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: March 13, 1990
    Assignee: Th. Goldschmidt AG
    Inventors: Jurgen Jachmann, Christian Weitemeyer, Dietmar Wewers
  • Patent number: 4678846
    Abstract: Acrylate or methacrylate ester modified organopolysiloxane mixtures comprising essentially equilibrated organpolysiloxanes with, on the average, more than 25 to fewer than 200 silicon atoms and additionally containing 2 to 30 weight percent of organopolysiloxanes with, on the average, 2 to 25 silicon atoms, and 2 to 30 weight percent of organopolysiloxanes with, on the average, 200 to 2,000 silicon atoms, as well as processes for the preparation of mixtures of modified organopolysiloxanes of this composition. The inventive acrylate or methacrylate ester modified organopolysiloxane mixtures have excellent adhesion to metallic substrates and their surfaces exhibit good abhesive properties towards adhesives.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: July 7, 1987
    Assignee: Th. Goldschmidt AG
    Inventors: Christian Weitemeyer, Jurgen Jachmann