Patents by Inventor Reinhard Knieps

Reinhard Knieps 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).

  • Method for producing phenothiazinium compounds
    Patent number: 7101997
    Abstract: A process for producing a phenothiazinium compound comprising the step of: reacting phenothiazine, in the presence of a halogen, with at least one amine selected from the group consisting of: wherein Z is CH2, O, S, SO2, NH, NCH3, NC2H5, NCH2CH2OH or NCOCH3, and R1 and R2 are each independently linear or branched CnH2nY.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: September 5, 2006
    Assignee: Honeywell International Inc.
    Inventors: Suzanne Wassmann-Wilken, Reinhard Knieps, Thomas Potrawa, Andreas Kanschik-Conradsen, Joachim Schulz, Christian Werner
  • Method for producing phenothiazinium compounds
    Publication number: 20060079682
    Abstract: A process for producing a phenothiazinium compound comprising the step of: reacting phenothiazine, in the presence of a halogen, with at least one amine selected from the group consisting of: wherein Z is CH2, O, S, SO2, NH, NCH3, NC2H5, NCH2CH2OH or NCOCH3, and R1 and R2 are each independently linear or branched CnH2nY.
    Type: Application
    Filed: October 7, 2004
    Publication date: April 13, 2006
    Inventors: Suzanne Wassmann-Wilken, Reinhard Knieps, Thomas Potrawa, Andreas Kanschik-Conradsen, Joachim Schulz, Christian Werner
  • Process for the preparation of substantially fluorinated alkyl bromides
    Patent number: 5430202
    Abstract: According to the process according to the invention, substantially fluorinated alkyl bromides, preferably perfluoroalkyl bromides, are prepared by reaction of substantially fluorinated alkyl iodides, with phase transfer catalysts in the bromide form.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: July 4, 1995
    Assignee: Riedel-De Haen Aktiengesellschaft
    Inventors: Andreas Winterfeldt, Gunter Bartels, Reinhard Knieps
  • Process for the preparation of substantially fluorinated alkyl bromides
    Patent number: 5336818
    Abstract: According to the process according to the invention, substantially fluorinated alkyl bromides, preferably perfluoroalkyl bromides, are prepared by reaction of substantially fluorinated alkyl iodides with organic bromine compounds in which the bromine atom is bound covalently to a carbon atom or a nitrogen atom.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: August 9, 1994
    Assignee: Riedel-de Haen Aktiengesellschaft
    Inventors: Andreas Winterfeldt, Gunter Bartels, Reinhard Knieps
  • Substituted bromofluorobenzene derivatives and process for its manufacture
    Patent number: 4446075
    Abstract: Substituted bromofluorobenzene, wherein the fluorine is in para-position and the bromine in meta-position to another substituent, is prepared by direct bromination of the corresponding fluorobenzene derivative. Bromination is advantageously carried out in the presence of a catalyst, preferably a metal or metal salt. The elementary bromine is used in an amount of 0.9 to 1.3 mols per mol of fluorobenzene derivative and the reaction temperature is between 20.degree. and 200.degree. C. The bromofluorobenzene derivatives are suitable for the synthesis of medicaments and plant protective agents.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: May 1, 1984
    Assignee: Riedel-de Haen AG
    Inventors: Kurt Eiglmeier, Reinhard Knieps