Patents by Inventor Sabina Zieman

Sabina Zieman 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).

  • Nitrided mixed oxide catalyst system and a process for the production of ethylenically unsaturated carboxylic acids or esters
    Patent number: 10301250
    Abstract: A method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an ?, ? ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst includes a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 28, 2019
    Assignee: LUCITE INTERNATIONAL UK LIMITED
    Inventors: Ian Andrew York, Sabina Zieman
  • NITRIDED MIXED OXIDE CATALYST SYSTEM AND A PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS
    Publication number: 20160297739
    Abstract: The invention relates to a method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an ?, ? ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises a nitrided metal oxide having at least two types of metal cations, M1 and M2, wherein M1 is selected from the metals of group 2, 3, 4, 13 (called also IIIA) or 14 (called also IVA) of the periodic table and M2 is selected from the metals of groups 5 or 15 (called also VA) of the periodic table. The invention extends to a catalyst system.
    Type: Application
    Filed: June 21, 2016
    Publication date: October 13, 2016
    Inventors: Ian Andrew York, Sabina Zieman