Patents by Inventor Matthias Stumpf

Matthias Stumpf 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).

  • Ethylene treatment by gas permeation
    Patent number: 6478851
    Abstract: The invention relates to a process for separating off ethylene from a gas mixture comprising more than 8% by volume of carbon dioxide or oxygen, by gas permeation.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: November 12, 2002
    Assignee: Axiva GmbH
    Inventors: Hermann Berwe, Rüdiger Knauf, Herbert Neumann, Matthias Stumpf, Manfred Wolter
  • Ethylene treatment by gas permeation
    Publication number: 20020087032
    Abstract: The invention relates to a process for preparing carbonyl compounds from olefins and an oxidizing agent in which the olefin is oxidized in a reactor, a reaction gas mixture which comprises unoxidized olefin being formed, which comprises separating off unoxidized olefin at least in part from the reaction gas mixture by a membrane process.
    Type: Application
    Filed: January 3, 2002
    Publication date: July 4, 2002
    Applicant: Axiva GmbH, a corporation of Germany
    Inventors: Hermann Berwe, Rudiger Knauf, Herbert Neumann, Matthias Stumpf, Manfred Wolter
  • Preparation of ethylene by gas permeation
    Patent number: 6365784
    Abstract: The invention relates to a process for preparing carbonyl compounds from olefins and an oxidizing agent in which the olefin is oxidized in a reactor, a reaction gas mixture which comprises unoxidized olefin being formed, which comprises separating off unoxidized olefin at least in part from the reaction gas mixture by a membrane process.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: April 2, 2002
    Assignee: Axiva GmbH
    Inventors: Hermann Berwe, Rüdiger Knauf, Herbert Neumann, Matthias Stumpf, Manfred Wolter
  • Optimization of a cooling water system of a polyolefin production unit
    Patent number: 6235852
    Abstract: The invention relates to a process for cooling polymerization reactors in the preparation of polyolefins, the polymerization being carried out in a first reactor and in at least one further reactor, the further reactor or reactors being connected downstream of the first reactor and each being cooled by an internal cooling circuit in which a cooling medium circulates. The invention comprises feeding cooling medium from the cooling circuit (9) of the first reactor (1) into the cooling circuit (10) of at least one further reactor (2) and taking off the same amount of cooling medium from the cooling circuit (10) of this reactor (2), cooling it and recirculating it into the cooling circuit (9) of the first reactor (1).
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: May 22, 2001
    Assignee: Aventis Research & Technologies GmbH & Co KG
    Inventors: Jürgen Hess, Matthias Stumpf