Patents by Inventor Gerhard Hahn

Gerhard Hahn 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: 7276470
    Abstract: Article for use in a dishwashing machine, which comprises a water-soluble glass or ceramic composition effective to reduce corrosion of glassware and at least one surfactant containing composition, wherein the amount of the glass or ceramic composition is within the range of 5 to 95 wt. % and the amount of the surfactant is in the range of 5 to 95 wt. %, both percentages based on the weight of the article.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: October 2, 2007
    Assignee: Reckitt Benckiser N.V.
    Inventor: Karlheinz Ulrich Gerhard Hahn
  • Patent number: 7179776
    Abstract: A ceramic composition is provided to protect glassware from corrosion in a dishwasher. The ceramic composition contains at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: February 20, 2007
    Assignee: Reckitt Benckiser, N.V.
    Inventor: Karlheinz Ulrich Gerhard Hahn
  • Patent number: 7056848
    Abstract: The support plate for transporting products during thermal treatment at firing temperatures is a nonporous keatite glass ceramic supporting member without a glassy surface layer. It has a nubby structure on an underside thereof and preferably C-shaped rounded edges. A method of making the keatite glass ceramic supporting member is described.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: June 6, 2006
    Assignee: Schott AG
    Inventors: Otmar Becker, Bernd Ruedinger, Gerhard Hahn, Michael Bug, Andreas Schminke, Fritz Schroeder, Klaus Schönberger, Erich Rodek, Friedrich Siebers, Rainer Best
  • Patent number: 7000430
    Abstract: The invention relates to a method of producing glass-ceramic parts and/or glass parts by deformation of a glass-ceramic blank and/or glass blank. The invention is characterized in that forming is carried out using infrared radiation.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: February 21, 2006
    Assignee: Schott AG
    Inventors: Ulrich Fotheringham, Hauke Esemann, Bernd Hoppe, Hubertus Bader, Gerhard Hahn, Markus Garsche-Andres, Matthias Brinkmann, Norbert Greulich-Hickmann
  • Patent number: 6990835
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: January 31, 2006
    Assignee: Schott AG
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Publication number: 20050183459
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa•s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 25, 2005
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Publication number: 20050116385
    Abstract: A method for producing a holding element on an edge region of a molded body made of a brittle material. The molded body is placed in a form tool that forms a charge cavity in the edge region of the molded body. The charge cavity is at least partially filled with a plastic material, and the molded body having the holding element formed thereon is then removed from the form tool. According to this invention, in order to optimize the production process, the molded body is held in the form tool by a clamping element. A section of the charge cavity is defined by the clamping element. A sealing element is applied to the molded body in a transition region between the charge cavity and the clamping element. The plastic material is introduced into the charge cavity by extrusion.
    Type: Application
    Filed: December 21, 2002
    Publication date: June 2, 2005
    Inventors: Bernd Schultheis, Michael Muskalla, Gerhard Hahn, Peter Nass
  • Patent number: 6852937
    Abstract: A switching device, in particular a position sensing switching device, generates switching signals. The position sensing switching device comprises at least one switching unit and at least one activation unit, the switching unit reacting to a relative spacial displacement of the switching unit and the activation unit with respect to one another by outputting appropriate switching signals. The switching unit is embodied as an inductive switching unit and the activation unit is embodied as an inductive damping unit. The position sensing switching device according to the invention is preferably applied in gear-speed-changing units for automatic gearboxes.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: February 8, 2005
    Assignee: Cherry GmbH
    Inventors: Martin Zapf, Alexander Kugler, Gerhard Hahn
  • Publication number: 20040220068
    Abstract: A ceramic composition is provided to protect glassware from corrosion in a dishwasher. The ceramic composition contains at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
    Type: Application
    Filed: May 18, 2004
    Publication date: November 4, 2004
    Applicant: Reckitt Benckiser N.V.
    Inventor: Karlheinz Ulrich Gerhard Hahn
  • Patent number: 6806245
    Abstract: A method is provided for using a ceramic composition to protect glassware from corrosion in a dishwasher. The ceramic composition contains at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: October 19, 2004
    Assignee: Reckitt Benckiser N.V.
    Inventor: Karlheinz Ulrich Gerhard Hahn
  • Publication number: 20040132602
    Abstract: Commercially obtained combustion aids typically consist of cordierite, fused silica or Si/SiC, which cannot meet the high thermal and also mechanical requirements in the necessary context, or only in a highly limited manner. The invention relates to a glass-ceramic combustion aid in the form of a non-porous keatite glass ceramic without a vitreous surface layer. Said combustion aid has high thermal stability and resistance to thermal shocks, practically no mechanical interaction, especially no porosity and adhesive effects, with the product to be baked, and can also be obtained in large formats having small thicknesses, as a mechanically stable bearing plate.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 8, 2004
    Inventors: Otmar Becker, Bernd Ruedinger, Gerhard Hahn, Michael Bug, Andreas Schminke, Fritz Schroeder, Klaus Schonberger, Erich Rodek, Friedrich Stebers, Rainer Best
  • Patent number: 6752934
    Abstract: Substance combinations which contain (1) an inorganic salt of nitrous acid, (2) a water-insoluble polysubstituted phenol, (3) an aliphatic ester of a dihydroxybenzoic acid, and (4) a tocopherol plus optionally (5) a suitable water vapor-volatile bicyclic terpene or an aliphatically substituted naphthalene which promotes sublimation of the components present in the respective substance combination, especially in air at a relatively high atmospheric humidity, and the use of such substance combinations as vapor phase corrosion inhibitors in packaging or in storage in closed spaces for protection of the conventional metals for use such as iron, chromium, nickel, tin, zinc, aluminum, copper and their alloys against atmospheric corrosion are described.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: June 22, 2004
    Assignee: EXCOR Korrosionsforschung GmbH
    Inventors: George Reinhard, Urte Ludwig, Gerhard Hahn
  • Patent number: 6710306
    Abstract: The present invention relates to a process for ceramising glass ceramics (so-called green glass). The process according to the present invention comprises the following procedural steps: green glass (3) is manufactured; the green glass is placed in a suspended state on a levitation substrate by supply of levitation gas; the green glass is heated in the suspended state by IR radiation until such time as the desired ceramising has set in.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: March 23, 2004
    Assignee: Schott Glas
    Inventors: Gerhard Hahn, Andreas Langsdorf, Ulrich Fotheringham, Hauke Esemann, Bernd Hoppe, Sybill Nüttgens
  • Patent number: 6540959
    Abstract: The invention concerns combinations of substances with (1) an aromatic mercaptothiazole or triazole, (2) a multiple substituted phenol insoluble in water, (3) L ascorbic acid or one of its salts and possibly (4) a suitable carboxylic acid/salt pair that after sublimation and condensation on metal surfaces can stabilize the pH value of a condensed water film in the range 4.8≦pH≦6.5 (referred to 25° C.), and use of the combinations of substances as vapor-phase corrosion inhibitors in packaging or for storage in closed spaces for protecting preferably metals that cannot be passivated, like copper, silver, manganese, magnesium and their alloys, against atmospheric corrosion.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: April 1, 2003
    Assignee: EXCOR Korrosionsforschung GmbH
    Inventors: Georg Reinhard, Gerhard Hahn, Signe Lautner, Urte Ludwig
  • Publication number: 20030050205
    Abstract: A method is provided for using a ceramic composition to protect glassware from corrosion in a dishwasher. The ceramic composition contains at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 13, 2003
    Applicant: RECKITT BENCKISER N.V.
    Inventor: Karlheinz Ulrich Gerhard Hahn
  • Publication number: 20030031583
    Abstract: Substance combinations which contain (1) an inorganic salt of nitrous acid, (2) a water-insoluble polysubstituted phenol, (3) an aliphatic ester of a dihydroxybenzoic acid, and (4) a tocopherol plus optionally (5) a suitable water vapor-volatile bicyclic terpene or an aliphatically substituted naphthalene which promotes sublimation of the components present in the respective substance combination, especially in air at a relatively high atmospheric humidity, and the use of such substance combinations as vapor phase corrosion inhibitors in packaging or in storage in closed spaces for protection of the conventional metals for use such as iron, chromium, nickel, tin, zinc, aluminum, copper and their alloys against atmospheric corrosion are described.
    Type: Application
    Filed: April 30, 2002
    Publication date: February 13, 2003
    Inventors: George Reinhard, Urte Ludwig, Gerhard Hahn
  • Publication number: 20020175060
    Abstract: The present invention relates to a switching device, in particular a position switching device, which is intended to generate switching signals. The position switching device according to the invention comprises at least one switching unit and at least one activation unit, the switching unit reacting to a relative spacial displacement of the switching unit and the activation unit with respect to one another by outputting appropriate switching signals, characterized in that the switching unit is embodied as an inductive sensor unit and the activation unit is embodied as an inductive damping unit. The position switching device according to the invention is preferably applied in gear-speed-changing units for automatic gearboxes.
    Type: Application
    Filed: May 8, 2002
    Publication date: November 28, 2002
    Inventors: Martin Zapf, Alexander Kugler, Gerhard Hahn
  • Publication number: 20020121112
    Abstract: In the process for partially shaping, a glass/glass ceramic article (5) is held on a planar support plate (1) by suction. The glass/glass ceramic article is heated to soften it, so that it has a viscosity below 106 dPa·s. After the softening one or more shaping dies (4) is or are moved upward through an opening or respective openings (3) in the support plate to form raised regions in the softened glass/glass ceramic article (5). The suction force is produced by a low pressure in a hollow compartment (2) below the support plate (1) and acts on the glass/glass ceramic article (5) by means of a gap (G) formed between each shaping die (4) and the support plate. Additional openings can be provided in the support plate and/or in one or more of the shaping dies to assist in applying the suction force to the glass/glass ceramic article. After solidification of the softened glass/glass-ceramic article the shaping die or dies (4) is or are withdrawn.
    Type: Application
    Filed: February 28, 2002
    Publication date: September 5, 2002
    Inventors: Friedrich-Georg Schroeder, Roland Hochhaus, Bernd Weitzel, Bernd Hoppe, Hermann Lemm, Gerhard Hahn, Hans-Walter Abraham
  • Publication number: 20020096649
    Abstract: The present invention relates to a process for ceramising glass ceramics (so-called green glass).
    Type: Application
    Filed: December 13, 2001
    Publication date: July 25, 2002
    Inventors: Gerhard Hahn, Andreas Langsdorf, Ulrich Fotheringham, Hauke Esemann, Bernd Hoppe, Sybill Nuttgens
  • Patent number: 6233868
    Abstract: A plant guard apparatus (10) for protecting the emerging growth and root system of a plant (100). The apparatus (10) includes a generally frustro-conical shaped housing member (20) having an enlarged bottom opening (21), a reduced diameter to opening (22), angled side walls (23) and a plurality of apertured tabs (24) projecting outwardly from the bottom periphery of the housing member (20) and adapted to receive alike plurality of anchor stake members (40) which are alignable with the angled side walls (23) of the housing member (20) such that the stake members (40) can be selectively angled away from the root system of the plants (100).
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: May 22, 2001
    Inventors: Gerhard Hahn, Rhonaldia Hahn