Patents by Inventor Helena Wagner

Helena Wagner 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).

  • Use of a polyster composition as a hydraulic fluid
    Patent number: 7524798
    Abstract: The present invention relates to the use of polyesters which consist of at least one carbohydrate and at least one carboxylic acid, and mixtures thereof, as a hydraulic fluid.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: April 28, 2009
    Assignee: Sudzucker Aktiengesellschaft Fuchs Petrolub AG
    Inventors: Markwart Kunz, Jörg Kowalczyk, Alireza Haji Begli, Rainer Kohlstrung, Manfred Harperscheid, Angela Kesseler, Rolf Luther, Theo Mang, Christian Puhl, Helena Wagner
  • Carbohydrate esters for using as lubricants
    Patent number: 7220710
    Abstract: The present invention relates to compositions which comprise mixtures of open-chain and cyclic molecules of the sugar alcohols D-sorbitol and D-mannitol which have been esterified with at least one carboxylic acid, processes for preparing these compositions and the use of this composition as lubricant or hydraulic liquid.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: May 22, 2007
    Assignees: Sudzucker Aktiengesellschaft, Fuchs Petrolub AG
    Inventors: Markwart Kunz, Jörg Kowalczyk, Alireza Haji Begli, Rainer Kohlstrung, Manfred Harperscheid, Angela Kesseler, Rolf Luther, Theo Mang, Christian Puhl, Helena Wagner
  • Compositions of material, especially lubricants and pressure transmitting means, the production and use thereof
    Patent number: 7101831
    Abstract: The invention relates to novel compositions of matter which may advantageously be used as lubricants or pressure transfer media or else for functional liquids and lubricant additives. The lubricants according to the invention are the reaction products of an electro-philic addition of linear or branched, aliphatic or aromatic carboxylic acids, carboxylic anhydrides, carbonyl halides or novel neoacids to the double bonds of fatty acids, esters thereof and/or of other fatty acid derivatives and also of synthetic esters. Owing to their increased oxidation resistance compared to the starting materials and also their low toxicity, the novel class of synthetic esters based on oleochemicals may find use in novel environmentally compatible lubricants, pressure transfer systems, functional liquids and lubricant additives.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: September 5, 2006
    Assignee: Fuchs Petrolub AG
    Inventors: Wolfgang Hoelderich, Ulrich Keller, Jutta Fischer, Patrick Weckes, Theo Mang, Rolf Luther, Helena Wagner
  • The use of a polyster composition as a hydraulic fluid
    Publication number: 20050032653
    Abstract: The present invention relates to the use of polyesters which consist of at least one carbohydrate and at least one carboxylic acid, and mixtures thereof, as a hydraulic fluid.
    Type: Application
    Filed: July 22, 2002
    Publication date: February 10, 2005
    Inventors: Markwart Kunz, Jorg Kowalczyk, Alireza Begli, Rainer Kohlstrung, Manfred Harperscheid, Angela Kesseler, Rolf Luther, Theo Mang, Christian Puhl, Helena Wagner
  • Carbohydrate esters for using as lubricants
    Publication number: 20040242919
    Abstract: The present invention relates to compositions which comprise mixtures of open-chain and cyclic molecules of the sugar alcohols D-sorbitol and D-mannitol which have been esterified with at least one carboxylic acid, processes for preparing these compositions and the use of this composition as lubricant or hydraulic liquid.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 2, 2004
    Inventors: Markwart Kunz, Jorg Kowalczyk, Alireza Haji Begli, Rainer Kohlstrung, Manfred Harperscheid, Angela Kesseler, Rolf Luther, Theo Mang, Christian Puhl, Helena Wagner
  • Novel compositions of material, especially lubricants and pressure transmitting means, the production and use thereof
    Publication number: 20030186823
    Abstract: The invention relates to novel compositions of matter which may advantageously be used as lubricants or pressure transfer media or else for functional liquids and lubricant additives. The lubricants according to the invention are the reaction products of an electro-philic addition of linear or branched, aliphatic or aromatic carboxylic acids, carboxylic anhydrides, carbonyl halides or novel neoacids to the double bonds of fatty acids, esters thereof and/or of other fatty acid derivatives and also of synthetic esters. Owing to their increased oxidation resistance compared to the starting materials and also their low toxicity, the novel class of synthetic esters based on oleochemicals may find use in novel environmentally compatible lubricants, pressure transfer systems, functional liquids and lubricant additives.
    Type: Application
    Filed: September 12, 2002
    Publication date: October 2, 2003
    Inventors: Wolfgang Hoelderich, Ulrich Keller, Jutta Fischer, Patrick Weckes, Theo Mang, Rolf Luther, Helena Wagner