Patents by Inventor Torsten Erwe

Torsten Erwe 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: 9822491
    Abstract: A method is provided for foaming a ballast bed of a railway track wherein the railway track comprises sleepers positioned on the ballast bed and rails positioned on the sleepers, wherein the rails are covered at least in a partial area along a region of the ballast bed to be foamed, and a foaming agent is introduced into the ballast bed while the rails are covered, wherein the ballast bed has in a sleeper bay defined by two successive sleepers an upper side facing against the gravitational direction, and the ballast bed is heaped up so that the upper side of the ballast bed reaches at least up to an underneath side of the sleeper facing in the gravitational direction.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: November 21, 2017
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Torsten Erwe, Thomas Gross, Thomas Kleiner
  • Patent number: 9562332
    Abstract: The invention relates to a method for producing load transferring regions in a ballast body of a track superstructure by introducing curable liquid plastics or reactive plastic mixtures from a mixing unit by means of at least two distributor pipes with outlets into the load transferring regions and allowing the plastic or the reactive plastic mixture to cure in said load transferring regions. The two distributor pipes with outlets are positioned on the left or on the right from the outside of the rails into the region between the two rails such that the outlets are located adjacent to each other and are laterally spaced from the front face (3) of the tie (2) that has the load transferring region to be reinforced. The two outlets are opened in order to allow the plastic or the reactive plastic mixture to exit at a controlled rate.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: February 7, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Torsten Erwe, Frank Grimberg, Thomas Gross, Thomas Kleiner
  • Patent number: 9297121
    Abstract: A process for the production of ballast for railway track laying, road construction, dam construction and bank protection, wherein ballast stones are spread out to form ballast and a reaction mixture for the preparation of a polyurethane foam, produced from components by a low-pressure process, is applied between the spread ballast stones.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: March 29, 2016
    Assignee: Covestro Deutschland AG
    Inventors: Andreas Hoffmann, Torsten Erwe, Udo Maier, Hans-Guido Wirtz, Thomas Kleiner, Ralf Busch
  • Publication number: 20150292167
    Abstract: A method is provided for foaming a ballast bed of a railway track wherein the railway track comprises sleepers positioned on the ballast bed and rails positioned on the sleepers, wherein the rails are covered at least in a partial area along a region of the ballast bed to be foamed, and a foaming agent is introduced into the ballast bed whilst the rails are covered, wherein the ballast bed has in a sleeper bay defined by two successive sleepers an upper side facing against the gravitational direction, and the ballast bed is heaped up so that the upper side of the ballast bed reaches at least up to an underneath side of the sleeper facing in the gravitational direction.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 15, 2015
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Torsten Erwe, Thomas Gross, Thomas Kleiner
  • Publication number: 20140300015
    Abstract: The invention relates to a method for producing load transferring regions in a ballast body of a track superstructure by introducing curable liquid plastics or reactive plastic mixtures from a mixing unit by means of at least two distributor pipes with outlets into the load transferring regions and allowing the plastic or the reactive plastic mixture to cure in said load transferring regions. The two distributor pipes with outlets are positioned on the left or on the right from the outside of the rails into the region between the two rails such that the outlets are located adjacent to each other and are laterally spaced from the front face (3) of the tie (2) that has the load transferring region to be reinforced. The two outlets are opened in order to allow the plastic or the reactive plastic mixture to exit at a controlled rate.
    Type: Application
    Filed: August 27, 2012
    Publication date: October 9, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Torsten Erwe, Frank Grimberg, Thomas Gross, Thomas Kleiner
  • Publication number: 20140161526
    Abstract: A process for the production of ballast for railway track laying, road construction, dam construction and bank protection, wherein ballast stones are spread out to form ballast and a reaction mixture for the preparation of a polyurethane foam, produced from components by a low-pressure process, is applied between the spread ballast stones.
    Type: Application
    Filed: March 21, 2012
    Publication date: June 12, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Andreas Hoffmann, Torsten Erwe, Udo Maier, Hans-Guido Wirtz, Thomas Kleiner, Ralf Busch
  • Patent number: 8337703
    Abstract: Processes comprising: providing an anion exchanger at least partially loaded with hexachlorostannate; and contacting the at least partially loaded anion exchanger with a 1 to 10 wt. % hydrochloric acid solution to regenerate the anion exchanger.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: December 25, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Torsten Erwe, Knud Werner, Dirk Weiβenberg
  • Patent number: 7749307
    Abstract: Process for providing a purified gas stream, comprising: providing a crude gas stream comprising an organic impurity; condensing at least a portion of the impurity from the gas stream to form a prepurified gas stream; and subjecting the prepurified stream to adsorption on a first adsorption medium; wherein the first medium is subjected to a regeneration comprising: providing a circulating inert gas stream having a temperature of at least 100° C.; passing the circulating inert gas stream over the first medium to form an organic impurity-loaded inert gas stream; cooling the loaded stream; condensing at least a portion of the organic impurity from the cooled stream to provide a prepurified circulating inert gas stream; subjecting the prepurified gas stream to adsorption on a second adsorption medium to provide a purified circulating inert gas stream; and recycling the purified gas stream to the circulating inert gas stream.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: July 6, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Ole Brettschneider, Knud Werner, Torsten Erwe
  • Publication number: 20090020478
    Abstract: Processes comprising: providing an anion exchanger at least partially loaded with hexachlorostannate; and contacting the at least partially loaded anion exchanger with a 1 to 10 wt. % hydrochloric acid solution to regenerate the anion exchanger.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 22, 2009
    Applicant: Bayer Material Science AG
    Inventors: Torsten Erwe, Knud Werner, Dirk Weissenberg
  • Publication number: 20080264255
    Abstract: Processes comprising: providing a gas comprising chlorine and at least one sulfur-containing component; and countercurrently contacting the gas with circulating chlorine-containing water in a column such that the at least one sulfur-containing component is oxidized with chlorine in the chlorine-containing water to form sulfate and chloride and a portion of the chlorine from the gas is absorbed by the water to an equilibrium.
    Type: Application
    Filed: April 28, 2008
    Publication date: October 30, 2008
    Applicant: Bayer MaterialScience AG
    Inventors: Torsten Erwe, Martin Weiss, Knud Werner
  • Publication number: 20080250924
    Abstract: Processes are described comprising: providing a crude gas stream having a temperature not exceeding 40° C., the crude gas stream comprising at least one organic impurity; condensing at least a portion of the at least one organic impurity from the crude gas stream at a temperature not exceeding 0° C. to form a prepurified gas stream; and subjecting (at least a portion, preferably substantially all, and more preferably the entirety, of) the prepurified gas stream to adsorption on a first adsorption medium to provide a purified gas stream; wherein the first adsorption medium is subjected to a regeneration comprising: (i) providing a circulating inert gas stream having a temperature of at least 100° C.; (ii) passing the circulating inert gas stream over the first adsorption medium to form an organic impurity-loaded inert gas stream; (iii) cooling the loaded inert gas stream to a temperature not exceeding 40° C.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Applicant: Bayer MaterialScience AG
    Inventors: Ole Brettschneider, Knud Werner, Torsten Erwe