Patents by Inventor Alexej Miller

Alexej Miller 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).

  • Process for the preparation of perfluoroalkylphosphines and the use thereof as perfluoroalkylating reagents
    Patent number: 7632969
    Abstract: The present invention relates to a process for the preparation of perfluoroalkylphosphines comprising at least the reaction of at least one fluoro(perfluoroalkyl)phosphorane with at least one hydride ion donor, and to the use of tris(perfluoroalkyl)phosphines as perfluoroalkylating reagents.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: December 15, 2009
    Assignee: Merck Patent GmbH
    Inventors: Urs Welz-Biermann, Nikolai Ignatyev, Michael Weiden, Michael Schmidt, Udo Heider, Alexej Miller, Helge Willner, Peter Sartori
  • PROCESS FOR THE PREPARATION OF PERFLUOROALKYLPHOSPHINES AND THE USE THEREOF AS PERFLUOROALKYLATING REAGENTS
    Publication number: 20070191637
    Abstract: The present invention relates to a process for the preparation of perfluoroalkylphosphines comprising at least the reaction of at least one fluoro(perfluoroalkyl)phosphorane with at least one hydride ion donor, and to the use of tris(perfluoroalkyl)phosphines as perfluoroalkylating reagents.
    Type: Application
    Filed: April 23, 2007
    Publication date: August 16, 2007
    Inventors: Urs Welz-Biermann, Nikolai Ignatyev, Michael Weiden, Michael Schmidt, Udo Heider, Alexej Miller, Helge Willner, Peter Sartori
  • Method for the production of perfluoroalkyl phosphines and the use thereof as perfluoroalkylating reactants
    Patent number: 7208626
    Abstract: The invention relates to a method for producing perfluoroalkyl phosphines, comprising at least one step in which at least one fluoro(perfluoroalkyl)phosphorane is reacted with at least one hydride ion donator, and the use of tris(perfluoroalkyl)phos-phines as perfluoroalkylating reactants.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: April 24, 2007
    Assignee: Merck Patent Gesellschaft
    Inventors: Urs Welz-Biermann, Nikolai Ignatyev, Michael Weiden, Michael Schmidt, Udo Heider, Alexej Miller, Helge Willner, Peter Sartori
  • Method for the production of perfluoroaldyl phosphines and the use thereof as perfluoroalkylating reactants
    Publication number: 20050131256
    Abstract: The invention relates to a method for producing perfluoroalkyl phosphines, comprising at least one step in which at least one fluoro(perfluoroalkyl)phosphorane is reacted with at least one hydride ion donator, and the use of tris(perfluoroalkyl)phosphines as perfluoroalkylating reactants.
    Type: Application
    Filed: March 17, 2003
    Publication date: June 16, 2005
    Inventors: Urs Welz-Biermann, Nikolai Ignatvey, Michael Weiden, Michael Schmidt, Udo Heider, Alexej Miller, Helge Wilner, Peter Sartori
  • Method for perfluoroalkylation by means of tris (perfluoroalkyl) phosphine oxides
    Publication number: 20050119513
    Abstract: The invention relates to a method for perfluoroalkylation by means of tris(perfluoroalkyl)phosphine oxides.
    Type: Application
    Filed: March 17, 2003
    Publication date: June 2, 2005
    Inventors: Nikolai Ignatyev, Urs Welz-Biermann, Michael Schmidt, Michael Weiden, Udo Heider, Helge Willner, Peter Sartori, Alexej Miller
  • Testing element for the colorimetric determination of oxidizable components in gas mixtures
    Patent number: 6348355
    Abstract: A testing elements for the calorimetric determination of oxidizable gas and/or vapor components in gas mixtures is provided. The testing element contains, besides usual oxidizing agents, at least one redox indicator, which is in the oxidized form. The redox indicator is preferably a benzidine derivative according to the general formula in which the radicals R are identical or different and denote a hydrogen, alkyl, aryl, halogen, trifluoromethyl, cyano, nitro, dialkylamino, ester, sulfoxyl ester, alkyloxy or aryloxy, X denotes a halogen, Y denotes a trifluoromethyl, cyano, nitro, dialkylamino, ester, sulfoxyl ester, alkyloxy or aryloxy, n is an integer from zero to three, and m equals 5−n. The testing elements are preferably designed as detector tubes that contain carrier materials, to which the oxidizing reagents and redox indicators are applied.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: February 19, 2002
    Assignee: Dräger Sicherheitstechnik GmbH
    Inventors: Wolfgang Bäther, Ralf Miethchen, Alexej Miller