Patents by Inventor Bettina Ludwig

Bettina Ludwig 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 and composition for inhibiting the polymerization of cyclopentadiene compounds
    Patent number: 10138183
    Abstract: A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), Compositions (AB) comprising (A) and (B) are also provided.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: November 27, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Stefanie Rinker, Bettina Ludwig, Manfred Neumann, Felix Nissen, Oliver Erpeldinger, Phillip R. James, Peter Watkins
  • Process and composition for inhibiting the polymerization of cyclopentadiene compounds
    Patent number: 9670116
    Abstract: A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), Compositions (AB) comprising (A) and (B) are also provided.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: June 6, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Stefanie Rinker, Bettina Ludwig, Manfred Neumann, Felix Nissen, Oliver Erpeldinger, Phillip R. James, Peter Watkins
  • Process and composition for inhibiting the polymerization of cyclopentadiene compounds
    Patent number: 9493382
    Abstract: A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), Compositions (AB) comprising (A) and (B) are also provided.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: November 15, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Stefanie Rinker, Bettina Ludwig, Manfred Neumann, Felix Nissen, Oliver Erpeldinger, Phillip R. James, Peter Watkins
  • PROCESS AND COMPOSITION FOR INHIBITING THE POLYMERIZATION OF CYCLOPENTADIENE COMPOUNDS
    Publication number: 20160237008
    Abstract: A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), Compositions (AB) comprising (A) and (B) are also provided.
    Type: Application
    Filed: April 25, 2016
    Publication date: August 18, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Stefanie RINKER, Bettina Ludwig, Manfred NEUMANN, Felix NISSEN, Oliver ERPELDINGER, Phillip R. JAMES, Peter WATKINS
  • PROCESS AND COMPOSITION FOR INHIBITING THE POLYMERIZATION OF CYCLOPENTADIENE COMPOUNDS
    Publication number: 20160237346
    Abstract: A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), Compositions (AB) comprising (A) and (B) are also provided.
    Type: Application
    Filed: April 25, 2016
    Publication date: August 18, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Stefanie RINKER, Bettina Ludwig, Manfred Neumann, Felix Nissen, Oliver Erpeldinger, Phillip R. James, Peter Watkins