Patents by Inventor Dana Bejan

Dana Bejan 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 bis(fluoralkyl)phosphinic acid chlorides or fluoralkylphosphonic acid chlorides
    Patent number: 8378157
    Abstract: The invention relates to a process for the preparation of bis(fluoroalkyl)phosphinyl chlorides or fluoroalkylphosphonyl dichlorides by reaction of the corresponding bis(fluoroalkyl)phosphinic acid or fluoroalkylphosphonic acid with aryltetrachlorophosphorane as chlorinating agent.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: February 19, 2013
    Assignee: Merck Patent Gesellschaft mit Beschränkter Haftung
    Inventors: Nikolai (Mykola) Ignatyev, Dana Bejan, Helge Willner, Emil Aust
  • PROCESS FOR THE PREPARATION OF BIS(FLUOROALKYL)PHOSPHINIC ACID OR FLUOROALKYLPHOSPHONIC ACID
    Publication number: 20110130589
    Abstract: The invention relates to a process for the preparation of bis(fluoroalkyl)phosphinic acid and/or fluoroalkylphosphonic acid by reaction of, monofluoroalkyltetrafluorophosphorane bis(fluoroalkyl)trifluorophosphorane or tris(fluoroalkyl)difluorophosphorane with water.
    Type: Application
    Filed: July 8, 2009
    Publication date: June 2, 2011
    Applicant: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Nikolai Mykola Ignatyev, Dana Bejan, Helge Willner
  • METHOD FOR PRODUCING BIS(FLUORALKYL)PHOSPHINIC ACID CHLORIDES OR FLUORALKYLPHOSPHONIC ACID CHLORIDES
    Publication number: 20110124921
    Abstract: The invention relates to a process for the preparation of bis(fluoroalkyl)phosphinyl chlorides or fluoroalkylphosphonyl dichlorides by reaction of the corresponding bis(fluoroalkyl)phosphinic acid or fluoroalkylphosphonic acid with aryltetrachlorophosphorane as chlorinating agent
    Type: Application
    Filed: June 24, 2009
    Publication date: May 26, 2011
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Nikolai(Mykola) Ignatyev, Dana Bejan, Helge Willner, Emil Aust