Patents by Inventor Lutz Walther

Lutz Walther 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).

  • 2-Methyl-5-phenylpentanal used as a rose odoriferous substance
    Publication number: 20070072789
    Abstract: The use of 2-methyl-5-phenyl pentanal is described for producing, modifying or intensifying a rose scent.
    Type: Application
    Filed: May 17, 2004
    Publication date: March 29, 2007
    Applicant: SYMRISE GMBH & CO. KG
    Inventors: Walter Kuhn, Lutz Walther, Horst Surburg
  • Method for production of aryl alkyl ethers
    Patent number: 6624334
    Abstract: Aryl alkyl ethers can be produced by the reaction of hydroxyaromatics with an alcohol in the presence of a catalyst. This process achieves higher yields of aryl alkyl ethers and the formation of ring-alkylated products and dialkyl ethers is markedly reduced.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: September 23, 2003
    Assignees: Haarmann & Reimer GmbH, Bayer Aktiengesellschaft
    Inventors: Efim Biller, Edgar Fuhrmann, Detlef Hagena, Heinz Günter Janneck, Jörg Talbiersky, Lutz Walther
  • Process for the preparation of cinnamic esters
    Patent number: 6538154
    Abstract: The present invention relates to a process for the synthesis of cinnamic esters and/or cinnamic acids by condensation of aldehydes with carboxylic anhydrides, using iron(II) salts as catalyst.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: March 25, 2003
    Assignee: Haarmann & Reimer GmbH
    Inventors: Walter Kuhn, Norbert Richter, Lutz Walther
  • Process for the preparation of cinnamic esters
    Publication number: 20020082442
    Abstract: The present invention relates to a process for the synthesis of cinnamic esters and/or cinnamic acids by condensation of aldehydes with carboxylic anhydrides, using iron(III) salts as catalyst.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 27, 2002
    Inventors: Walter Kuhn, Norbert Richter, Lutz Walther