Patents by Inventor Dietmar Hoff

Dietmar Hoff 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).

  • Mixtures composed of functionalized diene rubbers with trimethylolpropane and fatty acid, a process for production thereof and use thereof
    Patent number: 9593228
    Abstract: The invention relates to functionalized diene rubbers with trimethylolpropane and fatty acid, to a process for production there of and use thereof for the production of wet-skid-resistant and low-rolling-resistance motor-vehicle tire treads with high abrasion resistance.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: March 14, 2017
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: Norbert Steinhauser, Heike Kloppenburg, David Hardy, Alex Lucassen, Dietmar Hoff, Michaela Meiers
  • Vulcanization-accelerating mixture
    Patent number: 9410027
    Abstract: The present invention relates to a mixture which can be used as vulcanization accelerator, to a process for producing the mixture and to use of the mixture, to vulcanizates which comprise the said mixtures or which comprise corresponding individual constituents of the mixture, and also to vulcanizates which are produced with use of the said mixture.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: August 9, 2016
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Martin Säwe, Dietmar Hoff, Willi Grieshaber, Harald Kleinknecht
  • MIXTURES COMPOSED OF FUNCTIONALIZED DIENE RUBBERS WITH TRIMETHYLOLPROPANE AND FATTY ACID, A PROCESS FOR PRODUCTION THEREOF AND USE THEREOF
    Publication number: 20120270974
    Abstract: The invention relates to functionalized diene rubbers with trimethylolpropane and fatty acid, to a process for production there of and use thereof for the production of wet-skid-resistant and low-rolling-resistance motor-vehicle tire treads with high abrasion resistance.
    Type: Application
    Filed: May 14, 2010
    Publication date: October 25, 2012
    Applicants: RHEIN CHEMIE RHEINAU GMBH, LANXESS DEUTSCHLAND GMBH
    Inventors: Norbert Steinhauser, Heike Kloppenburg, David Hardy, Alex Lucassen, Dietmar Hoff, Michaela Meiers
  • VULCANIZATION-ACCELERATING MIXTURE
    Publication number: 20110092358
    Abstract: The present invention relates to a mixture which can be used as vulcanization accelerator, to a process for producing the mixture and to use of the mixture, to vulcanizates which comprise the said mixtures or which comprise corresponding individual constituents of the mixture, and also to vulcanizates which are produced with use of the said mixture.
    Type: Application
    Filed: July 30, 2010
    Publication date: April 21, 2011
    Applicant: RHEIN CHEMIE RHEINAU GMBH
    Inventors: Martin Säwe, Dietmar Hoff, Willi Grieshaber, Harald Kleinknecht
  • Method for the production of aldehydes
    Patent number: 6995293
    Abstract: The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: February 7, 2006
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Hans Bohnen, Jurgen Herwig, Dietmar Hoff, Peter Wasserscheid, Roy van Hal
  • Method for the production of aldehydes
    Publication number: 20050085671
    Abstract: The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.
    Type: Application
    Filed: September 3, 2003
    Publication date: April 21, 2005
    Inventors: Hans Bohnen, Jurgen Herwig, Dietmar Hoff, Peter Wasserscheid, Roy Hal