Patents by Inventor Thomas Ruhl

Thomas Ruhl 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: 10969693
    Abstract: A device and method for producing light-exposed structures on a workpiece having a light-sensitive surface. An optical unit includes a light source and a diffraction grating for producing a strip-shaped illumination pattern having strips extending in a longitudinal direction and having a pattern width extending transversely. A device moves the surface of the workpiece and optical unit relative to each other according to a path sequence, which includes movement longitudinal paths to produce a first and second light-exposed structure having strips, which is oriented parallel to each other on the workpiece surface. The movement paths are mutually spaced apart by less than the pattern width and the light-exposed structures overlap in such a way that strips of the light-exposed structures lie on each other. To obtain good light exposure of the surface by the illumination pattern, the diffraction grating is set oblique to the surface of the workpiece that is light-exposed by the illumination pattern.
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: April 6, 2021
    Assignee: Temicon GmbH
    Inventors: Oliver Humbach, Thomas Ruhl
  • Publication number: 20200233313
    Abstract: A device and method for producing light-exposed structures on a workpiece having a light-sensitive surface. An optical unit includes a light source and a diffraction grating for producing a strip-shaped illumination pattern having strips extending in a longitudinal direction and having a pattern width extending transversely. A device moves the surface of the workpiece and optical unit relative to each other according to a path sequence, which includes movement longitudinal paths to produce a first and second light-exposed structure having strips, which is oriented parallel to each other on the workpiece surface. The movement paths are mutually spaced apart by less than the pattern width and the light-exposed structures overlap in such a way that strips of the light-exposed structures lie on each other. To obtain good light exposure of the surface by the illumination pattern, the diffraction grating is set oblique to the surface of the workpiece that is light-exposed by the illumination pattern.
    Type: Application
    Filed: July 4, 2018
    Publication date: July 23, 2020
    Inventors: Oliver Humbach, Thomas Ruhl
  • Patent number: 10612192
    Abstract: The invention relates to a press for a machine for producing a fibrous material web, including at least one press nip formed between a press roller and a counter press roller of the press for guiding through the fibrous material web in a dehydrating manner, and two band shaped covers, which are each guided by multiple guide rollers in continuous circulation, so as to run together through the press nip, so that the fibrous material web is guided through sandwiched between said covers, and then separated again at a separation point, in order to continue guiding the fibrous material web on the one cover and separate it from the other cover. One guide roller of the guide rollers arranged at the separation point is a suctioned guide roller of the one cover, to hold the fibrous material web on the one cover at the separation position.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: April 7, 2020
    Assignee: Voith Patent GmbH
    Inventors: Daniel Gronych, Thomas Rühl
  • Publication number: 20190100876
    Abstract: A machine for dewatering and drying a paper, cardboard or other fibrous web, to which machine a fibrous stock suspension is fed which is formed at least partially from waste paper. The machine includes at least two press nips which are formed in each case by two press rolls, wherein a fibrous web runs through first press nip with a water absorbing dewatering belt on both sides. The fibrous web then runs through a second press nip with at least one other dewatering belt and a smooth impermeable transfer belt on both sides. A transfer belt transfers the fibrous web after second press nip to a belt in a downstream machine unit, e.g. dryer group. The dryer group allows the fibrous web to be guided in a serpentine manner alternatively over heated dryer cylinders and vacuum equipped guide rolls.
    Type: Application
    Filed: December 3, 2018
    Publication date: April 4, 2019
    Applicant: Voith Patent GmbH
    Inventors: Daniel Gronych, Thomas Rühl
  • Publication number: 20180371693
    Abstract: The invention relates to a press for a machine for producing a fibrous material web, including at least one press nip formed between a press roller and a counter press roller of the press for guiding through the fibrous material web in a dehydrating manner, and two band shaped covers, which are each guided by multiple guide rollers in continuous circulation, so as to run together through the press nip, so that the fibrous material web is guided through sandwiched between said covers, and then separated again at a separation point, in order to continue guiding the fibrous material web on the one cover and separate it from the other cover. One guide roller of the guide rollers arranged at the separation point is a suctioned guide roller of the one cover, to hold the fibrous material web on the one cover at the separation position.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 27, 2018
    Applicant: Voith Patent GmbH
    Inventors: Daniel Gronych, Thomas Rühl
  • Publication number: 20150239796
    Abstract: The present invention relates to compositions and methods for the synthesis of 18F labeled compounds. In particular, the present invention relates to a copper (I) mediated one pot method for 18F-trifluoromethylation of aromatic- or heteroaromatic halides with difluoro(iodo)methane (e.g., for use at PET imaging agents).
    Type: Application
    Filed: February 17, 2015
    Publication date: August 27, 2015
    Inventors: Thomas Rühl, Patrick Riss, Waqas Rafique
  • Patent number: 7134848
    Abstract: The invention relates to a pump (1) having a pump guide tube (13) for the transport of a heat-exchange medium (6) for a reactor having a bundle of catalyst tubes (2), where the pump (1) has a casing (14) which surrounds the pump guide tube (13), having an aperture (15) in the lower part of the casing (14) via which the heat-exchange medium (6) discharged from the lower region of the reactor by means of the pump (1) flows into the casing (14), flows upward in the region between the inner wall of the casing (14) and the outer wall of the pump guide tube (13), if desired via a heat exchanger (18), flows into the interior of the pump guide tube (13) via an aperture (16) in the upper region of the pump guide tube (13), flows through the pump guide tube (13) from top to bottom and flows via an aperture (17) in the lower region of the pump guide tube (13) into the reactor, into the upper region of the interspace between the catalyst tubes (2).
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 14, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Olbert, Torsten Mattke, Matthias Kummer, Thomas Rühl, Frank Rosowski
  • Publication number: 20040156721
    Abstract: The invention relates to a pump (1) having a pump guide tube (13) for the transport of a heat-exchange medium (6) for a reactor having a bundle of catalyst tubes (2), where the pump (1) has a casing (14) which surrounds the pump guide tube (13), having an aperture (15) in the lower part of the casing (14) via which the heat-exchange medium (6) discharged from the lower region of the reactor by means of the pump (1) flows into the casing (14), flows upward in the region between the inner wall of the casing (14) and the outer wall of the pump guide tube (13), if desired via a heat exchanger (18), flows into the interior of the pump guide tube (13) via an aperture (16) in the upper region of the pump guide tube (13), flows through the pump guide tube (13) from top to bottom and flows via an aperture (17) in the lower region of the pump guide tube (13) into the reactor, into the upper region of the interspace between the catalyst tubes (2).
    Type: Application
    Filed: December 4, 2003
    Publication date: August 12, 2004
    Inventors: Gerhard Olbert, Torsten Mattke, Matthias Kummer, Thomas Ruhl, Frank Rosowski
  • Publication number: 20040126285
    Abstract: A reactor for testing catalyst systems which has a plurality of catalyst tubes (2) which are arranged parallel to one another in the interior space of the reactor and whose ends are welded into tube plates and also has caps (3) at each end of the reactor which each bound a cap space (4), with a fluid reaction medium (5) being fed via one cap space (4) into the catalyst tubes (2), flowing through the catalyst tubes (2) and being discharged via the other cap space (4), and is also provided with a heat exchange medium circuit in which the heat exchange medium (6) is fed in at one end of the reactor, flows through the intermediate space between the catalyst tubes (2) and flows out at the other end of the reactor, wherein the catalyst tubes (2) are arranged in two or more catalyst tube regions (7) which are thermally separate from one another, is proposed.
    Type: Application
    Filed: December 5, 2003
    Publication date: July 1, 2004
    Inventors: Gerhard Olbert, Torsten Mattke, Matthias Kummer, Thomas Ruhl, Frank Rosowski
  • Patent number: 6716316
    Abstract: Process for conditioning a circulating felt belt of a machine, pipe suction apparatus and traversing pipe suction apparatus therefor, the process including performing a zonal conditioning of a plurality of zones across a width of the felt belt by measuring at least one of, fibrous material web cross direction profile; felt belt cross direction profile; and permeability of the felt belt across the width of at least one of the web and the belt. The felt belt is conditioned depending on measuring results obtained for a respective zone. The pipe suction apparatus includes a ceramic body extending at least essentially across the entire width of the felt belt, the ceramic body being provided with a slotted surface by way of which the felt belt is subjectable to vacuum, with a respective effective amount of slotted surface being zonally variably adjustable by way of movable tongues.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: April 6, 2004
    Assignee: Voith Paper Patent GmbH
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Rühl
  • Publication number: 20040060809
    Abstract: The invention relates to a method for the production of phthalic anhydride to a specification, using a distillative purification of crude phthalic anhydride, by introduction of crude phthalic anhydride into a distillation column, operating at reduced pressure, withdrawal of the low-boiling fraction from the head, or near the head of the column and withdrawal of the phthalic anhydride, which meets the specification, from a side-tap on the column, whilst operating the column at a reflux ratio x, with 1:1.7<x<1:3.
    Type: Application
    Filed: August 6, 2003
    Publication date: April 1, 2004
    Inventors: Walter Disteldorf, Jarren Peters, Bernd Morsbach, Matthias Kummer, Thomas Ruhl
  • Publication number: 20040011492
    Abstract: Application device for impinging on an element of a machine, including a plurality of nozzle units arranged at a respective distance from one another, the nozzle units being conveyed in a closed rotating path in a first direction extending generally transversely to a machine travel direction.
    Type: Application
    Filed: December 31, 2001
    Publication date: January 22, 2004
    Applicant: VOITH PAPER PATENT GMBH
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Ruhl
  • Patent number: 6655195
    Abstract: Process for determining disturbances of a moisture cross profile of a fibrous material web in a paper making machine, a paper making machine, and a measuring arrangement for measuring the disturbances, the process including guiding the fibrous material web by way of at least one water-permeable belt and collecting and draining off water released from the belt. The water is collected by several sections separated from one another. The process further includes measuring per time unit, the amount of water in each section, wherein the sections extend at right angles to a web running direction over only a partial section of the fibrous material web. The paper making machine includes at least one water-permeable belt, the belt being wrapped around a roll. The measuring arrangement includes a water collection device having the form of one of a trough or channel.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: December 2, 2003
    Assignee: Voith Paper Patent GmbH
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Rühl
  • Patent number: 6570026
    Abstract: On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or in the vicinity of the top of the distillation column and the on-spec phthalic anhydride is removed from the column via a side take-off.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: May 27, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Peschel, Bernd Bessling, Peter Reuter, Peter Michael Lorz, Bernhard Ulrich, Jean Werner Knab, Matthias Kummer, Thomas Rühl
  • Publication number: 20030010460
    Abstract: In a method of monitoring the state of a felt serving for the dewatering of a fiber web, in particular of a paper web or of a cardboard web, the felt topography is measured and/or an image of the felt surface having definition in depth is produced by mean of an optical measuring device and the result of the measurement obtained is compared with previously stored error patterns by means of an evaluation and/or control unit. Corresponding felt conditioning measures are then initiated, preferably automatically, in dependence on the result of the comparison. A corresponding felt monitoring device is also described. In a further method of monitoring the state of a felt or screen serving the dewatering of a fiber web, in particular of a paper web or a cardboard web, specific felt and/or screen properties are determined permanently or cyclically at intervals and are filed under a pre-settable felt and/or screen name in a historical database.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 16, 2003
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Ruhl
  • Publication number: 20020129914
    Abstract: Process for conditioning a circulating felt belt of a machine, pipe suction apparatus and traversing pipe suction apparatus therefor, the process including performing a zonal conditioning of a plurality of zones across a width of the felt belt by measuring at least one of, fibrous material web cross direction profile; felt belt cross direction profile; and permeability of the felt belt across the width of at least one of the web and the belt. The felt belt is conditioned depending on measuring results obtained for a respective zone. The pipe suction apparatus includes a ceramic body extending at least essentially across the entire width of the felt belt, the ceramic body being provided with a slotted surface by way of which the felt belt is subjectable to vacuum, with a respective effective amount of slotted surface being zonally variably adjustable by way of movable tongues.
    Type: Application
    Filed: December 31, 2001
    Publication date: September 19, 2002
    Applicant: VOITH PAPER PATENT GMBH
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Ruhl
  • Publication number: 20020112532
    Abstract: Process for determining disturbances of a moisture cross profile of a fibrous material web in a paper making machine, a paper making machine, and a measuring arrangement for measuring the disturbances, the process including guiding the fibrous material web by way of at least one water-permeable belt and collecting and draining off water released from the belt. The water is collected by several sections separated from one another. The process further includes measuring per time unit, the amount of water in each section, wherein the sections extend at right angles to a web running direction over only a partial section of the fibrous material web. The paper making machine includes at least one water-permeable belt, the belt being wrapped around a roll. The measuring arrangement includes a water collection device having the form of one of a trough, or channel.
    Type: Application
    Filed: December 31, 2001
    Publication date: August 22, 2002
    Applicant: VOITH PATER PATENT GMBH
    Inventors: Joachim Grabscheid, Ulrich Begemann, Oswald Satzger, Wolfgang Mayer, Ralf Rziha, Wolfgang Bamberger, Georg Kleiser, Thomas Ruhl
  • Patent number: 6388149
    Abstract: A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 14, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Rühl, Boris Breitscheidel, Jochem Henkelmann, Andreas Henne, Rolf Lebkücher, Konrad Knoll, Paul Naegele, Hermann Gausepohl, Sabine Weiguny, Norbert Niessner
  • Patent number: 6316680
    Abstract: In a process for isolating &agr;-ethynyl carbinols from the liquid reaction mixture from the addition of acetylene onto &agr;,&bgr;-unsaturated carbonyl compounds by distillation, the distillation is carried out continuously, the feed stream is introduced into the middle section of a distillation column (K), the major part of the water is distilled off azeotropically together with the solvent at the top of the column, and the &agr;-ethynyl carbinol target product is taken off below the feed point to the column.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: November 13, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf-Thomas Rahn, Harald Rust, Thomas Rühl, Jochem Henkelmann, Susanne Stutz
  • Patent number: 6248924
    Abstract: A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: June 19, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Rühl, Boris Breitscheidel, Jochem Henkelmann, Andreas Henne, Rolf Lebkücher, Konrad Knoll, Paul Naegele, Hermann Gausepohl, Sabine Weiguny, Norbert Niessner