Patents by Inventor Franz Wenzel

Franz Wenzel 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).

  • Publication number: 20190217503
    Abstract: In order to provide a method for heating an object (102) that is simple to perform and makes it possible to heat an object (102) efficiently and reliably, it is proposed that the method should include the following: providing an object (102) to be heated; applying at least one energy beam (108, 109) to the object (102) to be heated, wherein at least one energy beam (108) is guided over the object (102) to be heated multiple times, along a predetermined intended heating path (114), and this heats the object (102) along the intended heating path (114); determining a temperature distribution over the intended heating path (114), for identifying one or more deviation points (120) at which an actual local temperature differs from an expected and/or calculated temperature; changing and/or supplementing the application of at least one energy beam (108, 109) in order to compensate for the temperature difference at one or more deviation points (120).
    Type: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Applicant: bielomatik Leuze GmbH + Co. KG
    Inventors: Yorck-Richard DROST, Christian SCHILLING, Franz HEPP, Michael JAUCH, Hansjoerg WENZEL, Tobias BEISS
  • Patent number: 6418151
    Abstract: Automatic switching between clock sources in synchronous networks is accomplished using Synchronous Status Message transmitted over the network and a control circuit positioned between SASE (Stand Alone Synchronization Equipment) and a network element (SDH-NE, Synchronous Digital Hierarchy Network Element).
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: July 9, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Harald Michael Walter, Robert Franz Wenzel
  • Patent number: 4877853
    Abstract: A method for making a thermoplastically processable polymer by emulsion polymerizing at least 80 percent by weight of methyl methacrylate monomer with up to 20 percent by weight of at least one other monomer in an aqueous phase at a temperature from 0.degree. C. to 100.degree. C. in the presence of a polymerization initiator and a chain transfer agent in a molar ratio from 1:2 to 1:100,000, said chain transfer agent being from 0.01 to 5 percent by weight of said monomers, and then separating said polymer and said aqueous phase.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: October 31, 1989
    Assignee: Rohm GmbH
    Inventors: Werner Siol, Ernst Heil, Franz Wenzel, Peter J. Arndt, Ulrich Terbrack
  • Patent number: 4777632
    Abstract: Data storage disks containing optically readable information made from a copolymer having low water absorption and good optical and mechanical properties, said copolymer being at least ternary and comprising(A) methyl methacrylate, and further comonomers selected from at least two of the groups(B) ##STR1## where R' is hydrogen or methyl and R" is hydrogen or alkyl, and (C) ##STR2## where R'" is aliphatic or alicyclic hydrocarbon, and (D) styrene and/or alpha-methyl styrene.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: October 11, 1988
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Peter J. Arndt, Werner Siol
  • Patent number: 4709000
    Abstract: Copolymers exhibiting low water absorption and having good optical and mechanical properties, suitable for use in making data storage disks containing optically readable information, said copolymer being at least ternary and comprising(A) methyl methacrylate, and further comonomers selected from at least two of the groups(B) ##STR1## where R' is hydrogen or methyl and R" is hydrogen or alkyl, and (C) ##STR2## where R'" is aliphatic or alicyclic hydrocarbon, and (D) styrene and/or alpha-methyl styrene.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: November 24, 1987
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Peter J. Arndt, Werner Siol
  • Patent number: 4636458
    Abstract: Homopolymers of para-methylstyrene and copolymers thereof with monomers such as methyl methacrylate, which polymers exhibit very low water absorption in combination with good optical and mechanical properties and are useful for making optically readable data storage disks.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: January 13, 1987
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Peter J. Arndt, Werner Siol
  • Patent number: 4614827
    Abstract: A method for isolating a vinyl salt compound in solid form from an aqueous solution thereof by spray drying such an aqueous salt solution.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: September 30, 1986
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Franz Wenzel, Manfred Muller, Fritz Schlosser
  • Patent number: 4543383
    Abstract: What are disclosed are a continuous emulsion polymerization method for making an aqueous dispersion of an impact resistant resin, adaptable to use as a component of impact resistant polymethacrylate forming masses, by first emulsion polymerizing a first monomer component onto core particles of a seed latex until a degree of polymerization of said monomers from 80 to 95 percent is attained, whereby an intermediate product comprising said core particles covered with a rubbery polymer phase is obtained, and then emulsion polymerizing a second monomer component onto the particles of said intermediate product to form a shell of harder polymer on the particles of said intermediate product, and impact resistant resin products made by this method.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: September 24, 1985
    Assignee: Rohm GmbH
    Inventors: Ernst Heil, Franz Wenzel, Peter J. Arndt, Walter Schellhaas
  • Patent number: 4521567
    Abstract: A method for making impact resistant molding compositions wherein a hard phase having a glass transition temperature above 25.degree. C. and consisting principally of methyl methacrylate is polymerized at least partially in a first stage, following which the monomers of a rubbery phase whose polymers have a glass transition temperature below 25.degree. C. are added in a second stage and the polymerization is carried to completion, polymerization of the hard phase in the first stage being performed in a presence of an oil soluble free radical initiator and of an organosulfur chain transfer agent having at least two thiol groups in the molecule, and polymerization of the monomers of the rubbery phase in the second stage being carried out with graft crosslinkers in the presence of the previously formed hard phase.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: June 4, 1985
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Walter Ludwig, Manfred Munzer, Werner Siol, Franz Wenzel
  • Patent number: 4517380
    Abstract: Methacrylamidopropyl trimethylammonium chloride and similar quaternized aminoalkyl esters or aminoalkylamides of acrylic acid or methacrylic acid are purified by extraction of an aqueous solution thereof with dichloromethane to remove impurities, such as allyl methacrylamide, which may be formed by a Hofmann degradation of the compounds.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: May 14, 1985
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Manfred Muller, Fritz Schlosser, Franz Wenzel
  • Patent number: 4463032
    Abstract: What are disclosed are a method for making non-blocking soft polymer beads by applying an adherent polymer deposit on the beads, said deposited polymer having a glass transition temperature at least 10.degree. C. higher than the glass transition temperature of the soft polymer beads, which latter temperature is below 70.degree. C., and non-blocking soft polymer beads made by this method.
    Type: Grant
    Filed: December 9, 1982
    Date of Patent: July 31, 1984
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Werner Siol, Walter Ludwig, Franz Wenzel
  • Patent number: 4361687
    Abstract: What is disclosed is a method for making a water soluble polymer of low molecular weight which forms aqueous solutions of low viscosity, which method comprises polymerizing an .alpha.,.beta.-unsaturated water soluble monomer or a mixture of such monomers in a concentrated aqueous solution of said monomer or mixture in the presence of a free radical forming initiator and of formic acid or a water soluble salt thereof as a chain transfer agent.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: November 30, 1982
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Klaus Ross, Franz Wenzel
  • Patent number: 4261777
    Abstract: What is disclosed are methods and apparatus for coating a hollow synthetic resin tube with a pre-formed film coating by applying the film coating to an exterior surface of such a tube directly after extrusion, while the resin thereof is thermoplastic, and then passing them through a shaping channel while maintaining a modest pressure differential between the interior and exterior of the tube, whereby the film coating and tube are adhered by the compression thereof against the walls of the shaping channel.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: April 14, 1981
    Assignee: Rohm GmbH
    Inventors: Heinz Vetter, Franz Wenzel
  • Patent number: 4241203
    Abstract: What is disclosed are copolymers predominantly containing acrylonitrile and having a very low residual monomer content, for example of less than 100 ppm, the method of making such copolymers by polymerization to at least 60 percent conversion followed by post-heating at a temperature of more than 130.degree. C., and the use of such copolymers in orthopedic devices which come into direct contact with the skin.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: December 23, 1980
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Heinz-Dieter Bruemmer, Manfred Krieg
  • Patent number: 4239876
    Abstract: What is disclosed is a method for the quaternization of tertiary aminoalkyl esters or tertiary aminoalkyl amides of acrylic acid or of methacrylic acid in admixture with from 30 to 80 percent, by weight of the mixture, of acrylamide employing an alkylating agent in the absence of water to form, in high yield and in short reaction time, a mixture containing the corresponding quaternization products in the form of a fluid mixture which can be used directly for the preparation of copolymers of acrylamide.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: December 16, 1980
    Assignee: Rohm GmbH
    Inventors: Peter J. Arndt, Joachim Lowitz, Franz Wenzel
  • Patent number: 4229311
    Abstract: What is disclosed are methods for making polymer-in-oil solutions, useful for improving the viscosity-temperature relationship and low-temperature properties of lubricating oils when added thereto, which methods comprise polymerizing a methacrylic acid ester of an alcohol having 8 to 18 carbon atoms onto a polyolefin polymer of an olefinic hydrocarbon monomer having 2 to 4 carbon atoms in an oil solution of the polyolefin and ester monomers, then adding further polyolefin polymer to the solution and finally graft copolymerizing a polymerizable heterocyclic compound having a basic nitrogen atom in the ring thereof onto the resulting mixed polymers as backbone polymers or, in the alternative, separately graft copolymerizing a polymerizable heterocyclic compound having a basic nitrogen atom in the ring thereof onto a first backbone polymer which is itself a graft copolymer, in an oil solution, of a methacrylic acid ester of an alcohol having 8 to 18 carbon atoms on a polyolefin polymer of an olefinic hydrocarbon
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: October 21, 1980
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Ulrich Schoedel, Heinz Jost, Hans Pilz
  • Patent number: 4224425
    Abstract: What is disclosed is a method for the partial polymerization of at least one vinyl monomer to form a mixture of said monomer with a polymer thereof, which comprises initiating polymerization of said monomer with a percarbonic acid ester and inhibiting further polymerization when the desired mixture is formed by addition thereto of a thioether, an organic disulfide, or a mercaptan, as are the partially-polymerized mixtures so produced, and their use for forming an organic glass by further polymerization thereof.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 23, 1980
    Assignee: Rohm GmbH
    Inventors: Peter Buergle, Karl Maurer, Manfred Munzer, Wilhelm Rosskopp, Franz Wenzel
  • Patent number: 4206143
    Abstract: What is disclosed is the method for making an N-substituted acrylamide or an N-substituted methacrylamide which comprises reacting an alkyl ester of acrylic acid or of methacrylic acid with an aliphatic amine or with an aromatic amine at a temperature between 50.degree. C. and 180.degree. C. in the presence of a catalytic amount of a dialkyl tin oxide.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: June 3, 1980
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Peter J. Arndt, Fritz Schlosser, Siegmund Besecke, Heinz-Juergen Hohage, Guenter Schroeder
  • Patent number: 4149984
    Abstract: A method is disclosed for making a polymer-in-oil solution, useful for improving the viscosity-temperature relationship and low-temperature properties of lubricating oils when added thereto, which method comprises a first step of polymerizing a methacrylic acid ester of an alcohol having 8 to 18 carbon atoms in a solution, in a lubricating oil, of a polyolefin polymer of an olefinic hydrocarbon monomer having 2 to 4 carbon atoms, the oil solution of said polyolefin having a viscosity of less than 15,000 centistokes at 100.degree. C., and then, in a second step, adding further polyolefin polymer of the type defined herein until the total polymer content in the oil solution is from 20 percent to 55 percent by weight of said solution and said methacrylate ester comprises from 50 percent to 80 percent of said polymer content.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: April 17, 1979
    Assignee: Rohm GmbH
    Inventors: Franz Wenzel, Ulrich Schoedel, Heinz Jost, Hans Pilz