Patents by Inventor John Lohrenz

John Lohrenz 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).

  • Double metal cyanide catalysts for producing polyether polyols
    Patent number: 7008900
    Abstract: The invention provides new double metal cyanide (DMC) catalysts for preparing polyetherpolyols by the polyaddition of alkylene oxides to starter compounds which contain active hydrogen atoms, wherein the catalyst comprises a) double metal cyanide compounds, b) bile acids or their salts, esters or amides and c) organic complex ligands. The catalysts according to the invention show greatly increased activity during preparation of a polyetherpolyol.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: March 7, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Hofmann, Pieter Ooms, Pramod Gupta, Walter Schäfer, John Lohrenz
  • Selection method for odorants
    Patent number: 6741954
    Abstract: A mathematical determination model is used to select odorants for products to be perfumed and for the preparation.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 25, 2004
    Assignee: Symrise GmbH & Co. KG
    Inventors: Steffen Sonnenberg, Anja Finke, Andreas Klamt, John Lohrenz, Thorsten Bürger, Svend Matthiesen
  • Double metal cyanide catalysts for producing polyether polyols
    Patent number: 6586566
    Abstract: This invention relates to novel double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds having active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) ionic surface- or interface-active compounds. The catalysts according to the invention have greatly increased activity in the production of polyether polyols.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 1, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Hofmann, Pieter Ooms, Pramod Gupta, Walter Schäfer, John Lohrenz
  • Selection method for odorants
    Publication number: 20030008788
    Abstract: A mathematical determination model is used to select odorants for products to be perfumed and for the preparation.
    Type: Application
    Filed: December 19, 2001
    Publication date: January 9, 2003
    Inventors: Steffen Sonnenberg, Anja Finke, Andreas Klamt, John Lohrenz, Thorsten Burger, Svend Matthiesen
  • Selection method for aroma substances
    Publication number: 20020152038
    Abstract: A mathematical determination model is used to select aroma substances for products to be aromatized and for the preparation.
    Type: Application
    Filed: December 20, 2001
    Publication date: October 17, 2002
    Inventors: Steffen Sonnenberg, Anja Finke, Andreas Klamt, John Lohrenz, Thorsten Burger, Svend Matthiesen
  • Selection method for cosmetic auxiliaries
    Publication number: 20020146441
    Abstract: A mathematical determination model is used to select cosmetic auxiliaries for cosmetic products and for the manufacture.
    Type: Application
    Filed: December 20, 2001
    Publication date: October 10, 2002
    Inventors: Steffen Sonnenberg, Anja Finke, Simone Peters, Andreas Klamt, John Lohrenz, Thorsten Burger, Svend Matthiesen