Patents by Inventor Ralf Stein

Ralf Stein 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: 11959802
    Abstract: A spectrometer device includes an optical interference filter which is designed to filter specific wavelength ranges of an incident light beam on passage through the optical interference filter. The spectrometer device also includes a detector device which is designed to detect the filtered light beam. Further, the spectrometer device includes a focusing device with a reflective surface. The focusing device is designed to focus the filtered light beam onto the detector device by reflection on the surface.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 16, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Ralf Noltemeyer, Martin Husnik, Eugen Baumgart, Marc Schmid, Reinhold Roedel, Benedikt Stein, Christoph Schelling, Christoph Daniel Kraemmer
  • Patent number: 9388781
    Abstract: A fuel accumulator block is provided for testing high-pressure components of fuel injection devices. The fuel accumulator block includes an accumulator body and at least one pressure control valve, which is accommodated in a receptacle in the accumulator body. The accumulator body is connected to a test line for a test medium and to a cooling line for a cooling medium. Within the accumulator body a test line run is developed for the test medium and a cooling line run is developed for the cooling medium. The cooling line run has at least one section which runs in the vicinity of the receptacle for the pressure control valve.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: July 12, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Ralf Stein, Reinhard Hoss
  • Publication number: 20130220275
    Abstract: A fuel accumulator block is provided for testing high-pressure components of fuel injection devices. The fuel accumulator block includes an accumulator body and at least one pressure control valve, which is accommodated in a receptacle in the accumulator body. The accumulator body is connected to a test line for a test medium and to a cooling line for a cooling medium. Within the accumulator body a test line run is developed for the test medium and a cooling line run is developed for the cooling medium. The cooling line run has at least one section which runs in the vicinity of the receptacle for the pressure control valve.
    Type: Application
    Filed: July 20, 2011
    Publication date: August 29, 2013
    Inventors: Ralf Stein, Reinhard Hoss
  • Publication number: 20090011252
    Abstract: The invention relates to a process for applying a multilayered coating to workpieces and/or materials, comprising the following steps: applying a supporting layer to the workpiece or the material by thermal spraying or plasma spraying; applying an adhesion-promoting intermediate layer; and applying a carbon- or silicon-containing topcoat layer by plasma vapour deposition (FIG. 3B).
    Type: Application
    Filed: April 10, 2008
    Publication date: January 8, 2009
    Applicants: Auctio GmbH
    Inventors: Ralf Stein, Gotz Matthaus, Oliver Noll
  • Patent number: 6815494
    Abstract: Aqueous coating material comprising (A) water-dispersible hydroxy-functional binder component containing urethane groups, (B) water-dispersible binder component containing urethane groups and blocked isocyanate groups, (C) water-dispersible amino resin, and optionally (D) water-dispersible hydroxy-functional polyester, the binder component (B) being preparable by (B1) preparing a polyurethane prepolymer containing isocyanate groups from at least one polyol and at least one polyisocyanate, (B2) reacting the polyurethane prepolymer (B1) containing isocyanate groups with a chain extender to give a hydroxyl-containing chain-extended polyurethane prepolymer, (B3) reacting the hydroxyl-containing chain-extended polyurethane prepolymer (B2) with at least one polyisocyanate to give a further polyurethane prepolymer containing isocyanate groups, and (B4) blocking some or all of the isocyanate groups of the chain-extended polyurethane prepolymer (B3) containing isocyanate groups with a blocking agent to give a polyuret
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 9, 2004
    Assignee: BASF Coatings AG
    Inventors: Georg Wigger, Ulrike Röckrath, Bärbel Wiatr, Marita Schilling, Ralf Stein
  • Publication number: 20030185991
    Abstract: Aqueous coating material comprising (A) water-dispersible hydroxy-functional binder component containing urethane groups, (B) water-dispersible binder component containing urethane groups and blocked isocyanate groups, (C) water-dispersible amino resin, and optionally (D) water-dispersible hydroxy-functional polyester, the binder component (B) being preparable by (B1) preparing a polyurethane prepolymer containing isocyanate groups from at least one polyol and at least one polyisocyanate, (B2) reacting the polyurethane prepolymer (B1) containing isocyanate groups with a chain extender to give a hydroxyl-containing chain-extended polyurethane prepolymer, (B3) reacting the hydroxyl-containing chain-extended polyurethane prepolymer (B2) with at least one polyisocyanate to give a further polyurethane prepolymer containing isocyanate groups, and (B4) blocking some or all of the isocyanate groups of the chain-extended polyurethane prepolymer (B3) containing isocyanate groups with a blocking agent to give a polyuret
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Inventors: George Wigger, Ulrike Rockrath, Barbel Wiatr, Marita Schilling, Ralf Stein
  • Patent number: 6620511
    Abstract: Aqueous coating material comprising (A) water-dispersible hydroxy-functional binder component containing urethane groups, (B) water-dispersible binder component containing urethane groups and blocked isocyanate groups, (C) water-dispersible amino resin, and optionally (D) water-dispersible hydroxy-functional polyester, the binder component (B) being preparable by (B1) preparing a polyurethane prepolymer containing isocyanate groups from at least one polyol and at least one polyisocyanate, (B2) reacting the polyurethane prepolymer (B1) containing isocyanate groups with a chain extender to give a hydroxyl-containing chain-extended polyurethane prepolymer, (B3) reacting the hydroxyl-containing chain-extended polyurethane prepolymer (B2) with at least one polyisocyanate to give a further polyurethane prepolymer containing isocyanate groups, and (B4) blocking some or all of the isocyanate groups of the chain-extended polyurethane prepolymer (B3) containing isocyanate groups with a blocking agent to give a polyuret
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: September 16, 2003
    Assignee: BASF Coatings AG
    Inventors: Georg Wigger, Ulrike Röckrath, Bärbel Wiatr, Marita Schilling, Ralf Stein
  • Patent number: 6221949
    Abstract: The present invention relates to a coating formulation for use in multicoat paint systems, which a) comprises as binder a water-dilutable polyurethane resin which has an acid number of from 10 to 60 and a number-average molecular weight of from 4000 to 25,000 and can be prepared by reacting with one another aa) a polyester—and/or polyether-polyol having a number-average molecular weight of from 400 to 5000 or a mixture of such polyester—and/or polyether-polyols, bb) a polyisocyanate or mixture of polyisocyanates, cc) a compound which has in the molecule at least one group which in reactive toward isocyanate groups and at least one group which is capable of forming anions, or a mixture of such compounds, and optionally dd) a hydroxyl—and/or amino-containing organic compound having a molecular weight of from 40 to 400, or a mixture of such compounds and at least partially neutralizing the resulting reaction product, and b) comprises pigments and/or fillers, the ratio of binder to pigment
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: April 24, 2001
    Assignee: BASF Coatings AG
    Inventors: Lutz-Werner Gross, Ralf Stein, Egon Wegner, Gudrun Wiemann
  • Patent number: 5905132
    Abstract: The invention relates to coating materials containing a water-dilutable polyurethane resin as binder. The resin can be prepared by reacting some of the free isocyanate groups present in a prepolymer (I) which contains acidic groups and isocyanate groups with a blocking agent so as to form a prepolymer (II) which contains blocked isocyanate groups, the blocking agent being employed in a quantity such that the prepolymer (II) still contains on average at least one free isocyanate group per molecule, reacting the prepolymer (II) with a compound which contains at least one primary or secondary amino group and at least one hydroxyl group in the molecule, to give a polyurethane resin, and finally converting the polyurethane resin prepared in this way into a water-dilutable polyurethane resin by at least partial neutralization of the acidic groups.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: May 18, 1999
    Assignee: BASF Coatings AG
    Inventors: Egon Wegner, Lutz-Werner Gross, Ralf Stein