Patents by Inventor Manfred Döring

Manfred Döring 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 9, 10-dihydro-9-OXA-10-organyloxyphosphaphenanthrene-10-oxide or -thione and derivatives of the same substituted on the phenyl groups
    Patent number: 7317119
    Abstract: A process is provided for the preparation of 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione and derivatives of same substituted on the phenyl groups, in which: (a) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOP) or a derivative of same is reacted in the presence of at least one mono- or polyhydric alcohol with at least one ortho ester with formation of a first intermediate product, (b) the intermediate product from step (a) is optionally reacted with at least one further mono- or polyhydric alcohol with formation of a further intermediate product and (c) the intermediate product from steps (a) or (b) is transformed by addition of oxidation agent into 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione or a derivative of same substituted on the phenyl groups.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: January 8, 2008
    Assignee: Schill & Seilacher “Struktol” AG
    Inventors: Uwe Dittrich, Berthold Just, Manfred Döring, Michael Ciesielski
  • 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
  • Latent combination compounds and latent ammonium salts comprising epoxide resin curing agents and flame-protection agents as well as epoxide resin systems and products prepared from them
    Patent number: 6555227
    Abstract: Combination compounds from curing agents/accelerators and flame-protection agents for the latent curing/acceleration of epoxide resin systems and their endowment with flame-retarding properties, the epoxide resin systems being able to be thermally cured, as well as the products prepared from the epoxide resin systems.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: April 29, 2003
    Assignee: Schill & Seilacher (GmbH & Co.)
    Inventors: Stephan Sprenger, Rainer Utz, Michael Ciesielski, Manfred Doering
  • Latent combination compounds and latent ammonium salts comprising epoxide resin curing agents and flame-protection agents as well as epoxide resin systems and products prepared from them
    Publication number: 20010014706
    Abstract: Combination compounds from curing agents/accelerators and flame-protection agents for the latent curing/acceleration of epoxide resin systems and their endowment with flame-retarding properties, the epoxide resin systems being able to be thermally cured, as well as the products prepared from the epoxide resin systems.
    Type: Application
    Filed: February 2, 2001
    Publication date: August 16, 2001
    Applicant: SCHILL & SEILACHER (GmbH & Co.)
    Inventors: Stephan Sprenger, Rainer Utz, Michael Ciesielski, Manfred Doering