Patents by Inventor Walter A. Kuhn

Walter A. Kuhn 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).

  • 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
  • Publication number: 20070073089
    Abstract: A process for the catalytic double bond isomerisation of alkenyl alkoxybenzenes [alkoxy-substituted (2-alkenyl)-benzenes] (with a non-conjugated double bond in the alkenyl group) of formula A in the presence of a catalytically active quantity of alkali and/or alkaline earth C1-C6 alcoholates to the corresponding alkenyl alkoxybenzenes [alkoxy-substituted (1-alkenyl)-benzenes] (with a double bond in the alkenyl group which is conjugated with the benzene ring) of formula B is described
    Type: Application
    Filed: September 25, 2006
    Publication date: March 29, 2007
    Applicant: SYMRISE GMBH & CO. KG
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft, Christoph Dittert, Torsten Stephan
  • Patent number: 7196051
    Abstract: The invention relates to a process for the preparation of cyclohexyloxyacetic alkyl esters by hydrogenation of phenoxyacetic alkyl esters and to the use of cyclohexyloxyacetic alkyl esters as fragrances.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: March 27, 2007
    Assignee: Symrise GmbH & Co. KG
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft
  • Patent number: 7183444
    Abstract: The present invention relates to a method for the preparation of anisalcohol (methoxybenzyl alcohol) by hydrogenation of anisaldehyde (methoxybenzaldehyde) in the presence of Raney nickel and a basic additive, the use of the anisalcohol and hygiene or care products containing anisalcohol.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: February 27, 2007
    Assignee: Symrise GmbH & Co. KG
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft
  • Publication number: 20060211597
    Abstract: The present invention concerns mixtures with cis-3,3,5-trimethylcyclohexyl esters and trans-3,3,5-trimethylcyclohexyl esters, the use of cis-3,3,5-trimethylcyclohexyl esters as fragrance substances and individual cis-3,3,5-trimethylcyclohexyl esters and their uses.
    Type: Application
    Filed: June 30, 2004
    Publication date: September 21, 2006
    Inventors: Walter Kuhn, Horst Surburg
  • Patent number: 7098347
    Abstract: Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has a pKa value of greater than or equal to 4.5 and the strong acid has a pKa value of less than or equal to 1.5, wherein after the reaction has taken place, the strong acid is neutralized with at least 0.9 molar equivalent of a base.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: August 29, 2006
    Assignee: symrise GmbH & Co. KG
    Inventors: Stefan Lambrecht, Werner Marks, Hans-Juergen Topp, Norbert Richter, Walter Kuhn
  • Publication number: 20060167322
    Abstract: The present invention relates to a method for manufacturing menthol by catalytic hydration of compounds having the carbon network of menthane with at least one double bond and which are substituted in 3-position by oxygen and/or catalytic rearrangement of stereoisomers of the menthol in the presence of hydrogen and doped nickel catalysts.
    Type: Application
    Filed: August 20, 2003
    Publication date: July 27, 2006
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft, Konrad Korber
  • Publication number: 20060135400
    Abstract: The use of 4-cyclohexyl-2-butanol as a fragrance substance and in particular as a lily of the valley fragrance substance is described. Blends of fragrance substances and perfumed products, each containing 4-cyclohexyl-2-butanol, are also described, as well as a process for producing a corresponding perfumed product.
    Type: Application
    Filed: February 12, 2004
    Publication date: June 22, 2006
    Inventors: Walter Kuhn, Karl-Heinz Bork, Horst Surburg
  • Publication number: 20060089296
    Abstract: The invention relates to a process for the production of cyclohexadecanone by hydrogenation of cyclohexadecenone and odoriferous substance mixtures, as well as products containing the cyclohexadecanone according to the invention.
    Type: Application
    Filed: May 22, 2003
    Publication date: April 27, 2006
    Inventors: Ingo Wohrle, Walter Kuhn, Hans-Ulrich Funk, Alfred Korber
  • Publication number: 20060088559
    Abstract: The present invention relates to a method for the preparation of anisalcohol (methoxybenzyl alcohol) by hydrogenation of anisaldehyde (methoxybenzaldehyde) in the presence of Raney nickel and a basic additive, the use of the anisalcohol and hygiene or care products containing anisalcohol.
    Type: Application
    Filed: April 9, 2003
    Publication date: April 27, 2006
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft
  • Patent number: 6914109
    Abstract: The invention relates to a process for the preparation of 15-pentadecanolide by hydrogenating 15-pentadecenolide and to its use.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 5, 2005
    Assignee: Symrise GmbH & Co. KG
    Inventors: Walter Kuhn, Oskar Koch, Hans-Ulrich Funk, Gerhard Senft
  • Publication number: 20050085536
    Abstract: Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has a pKa value of greater than or equal to 4.5 and the strong acid has a pKa value of less than or equal to 1.5, wherein after the reaction has taken place, the strong acid is neutralized with at least 0.9 molar equivalent of a base.
    Type: Application
    Filed: September 10, 2004
    Publication date: April 21, 2005
    Inventors: Stefan Lambrecht, Werner Marks, Hans-Juergen Topp, Norbert Richter, Walter Kuhn
  • Patent number: 6680404
    Abstract: The invention relates to a method of producing alkoxycinnamic acid ester (alkoxy cinnamate) by condensing C5-C8 acetic acid esters with C1-C4 alkoxybenzaldehyde in the presence of an alkaline and/or alkaline earth C1-C4 alcohalate and removing the C1-C4 alcohol that is produced by this reaction from the reaction mixture.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 20, 2004
    Assignee: Symrise GmbH & Co. KG
    Inventors: Walter Kuhn, Werner Marks, Klaus Zahlmann
  • Patent number: 6624330
    Abstract: The present invention relates to a method for stabilizing phenylacetaldehyde by adding at least one additive, in which case the additive contains one or more polybasic carboxylic acids.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: September 23, 2003
    Assignee: Haarmann & Reimer GmbH
    Inventor: Walter Kuhn
  • Publication number: 20030109756
    Abstract: The invention relates to a process for the preparation of 3,3,5-trimethylcyclohexanol by hydrogenation of isophorone in the presence of a ruthenium catalyst.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 12, 2003
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft, Heinz-Dieter Quest
  • Publication number: 20030109415
    Abstract: The invention relates to a process for the preparation of cyclohexyloxyacetic alkyl esters by hydrogenation of phenoxyacetic alkyl esters and to the use of cyclohexyloxyacetic alkyl esters as fragrances.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 12, 2003
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft
  • Patent number: 6572507
    Abstract: The invention concerns a transmission (1) with automatic shifting capabilities and with three spider supported planetary sets (2, 3, 4), three brakes (5, 6, 7), and two clutches (8, 9) for the shifting of six forward moving gears and one reverse gear and having an input shaft (10) and an output shaft (11). In this way, the input shaft (10) is in continual connection with the sun gear (16) of the second planetary set (3) and the input shaft (10) is connectable to the sun gear (12) of the first planetary set (2) by means of the first clutch (8) and/or by means of the second clutch (9) is also connectable with the spider (15) of the first planetary set (2). Further, the sun gear (12) of the first planetary set (2) by means of the first brake (5) and or the spider (15) of the first planetary set (2) by means of the second brake (6) and/or the sun gear (20) of the third planetary set (4) by means of the third brake, are all connectable with the housing of the transmission.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: June 3, 2003
    Assignee: ZF Friedrichshafen AG
    Inventors: Bülent Korkmaz, Walter Kuhn, Hans-Jörg Domian, Bernhard Drerup, Gerhard Gumpoltsberger
  • Patent number: 6547690
    Abstract: An infinitely variable toroidal drive comprising a housing (1), an input shaft (3), a torque converter (34), two input discs (5, 15) with toroidal inner surfaces, two output discs (6, 16) with toroidal inner surfaces wherein one input disc and one output disc each form a pair and the two output discs are arranged next to each other with mirror symmetry, several friction wheels for transmitting a torque from one input disc to the corresponding output disc, an output shaft (10) and a gear wheel system (8, 9) being coupled via engaging gears (57) with an output disc (16).
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: April 15, 2003
    Assignee: ZF Friedrichshafen AG
    Inventors: Walter Kuhn, Jürgen Wafzig
  • Patent number: 6547949
    Abstract: The electrolyte is supplied from a reservoir through at least one supply line to an electrolysis area including anodes and cathodes and at least one electric d.c. voltage source, and used electrolyte is at least partly recirculated from the electrolysis area back to the reservoir through at least one discharge line. Between a first contact point in the electrolyte of the supply line and a second contact point in the electrolyte of the discharge line there is a bridge line containing electrolyte, where the ohmic resistance R1 of the electrolyte in the bridge line between the first and the second contact point is not more than 10% of the ohmic resistance R2 which exists between the first and the second contact point in the electrolyte flowing through the reservoir. The amount of electrolyte flowing through the bridge line per unit time is not more than 5% of the amount of electrolyte flowing in the supply line in the vicinity of the first contact point.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: April 15, 2003
    Assignee: MG Technologies AG
    Inventors: Nikola Anastasijevic, Stefan Laibach, Friedhelm Münker, Markus Schweitzer, Walter Kühn
  • 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