Patents by Inventor Carsten Kollann

Carsten Kollann 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 6-alkoxy-(6H)-dibenz [c,e] [1,2]-oxaphosphorines
    Patent number: 7115765
    Abstract: The present invention relates to a process for preparing 6-alkoxy-(6H)-dibenzo[c,e][1,2]oxaphosphorins, wherein 6H-dibenzo[c,e][1,2]oxaphosphorin 6-oxides of the formula I are used as the reactant.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: October 3, 2006
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Stephan Sprenger, Michael Ciesielski, Carsten Kollann, Manfred Döring
  • Method for producing 6-alkoxy-(6h)-debenz [c,e] [1,2]-oxaphosphorines
    Publication number: 20050176983
    Abstract: The present invention relates to a process for preparing 6-alkoxy-(6H)-dibenzo[c,e][1,2]oxaphosphorins, wherein 6H-dibenzo[c,e][1,2]oxaphosphorin 6-oxides of the formula I are used as the reactant.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 11, 2005
    Inventors: Stephan Sprenger, Michael Ciesielski, Carsten Kollann, Manfred Doring