Patents by Inventor Peter Werkhoff

Peter Werkhoff 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).

  • Cheese flavoring
    Publication number: 20020034570
    Abstract: Cheese flavoring containing both volatile and non-volatile components which comprise constituents which contribute to the taste sensation “cheese”.
    Type: Application
    Filed: May 31, 2001
    Publication date: March 21, 2002
    Inventors: Gerhard Krammer, Peter Werkhoff, Gunther Hansmann, Silke Hilmer
  • Furfurylthioalkanes, a process for their preparation and their use
    Patent number: 6153770
    Abstract: The invention relates to new furfurylthioalkanes of the formula ##STR1## wherein n can be zero or 1R represents the methyl or ethyl radical if n is 0, and represents hydrogen or the methyl radical if n is 1, andR' represents methyl or ethyl,a process for their preparation and their use as aroma substances.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: November 28, 2000
    Assignee: Haarmann & Reimer
    Inventors: Heinz-Jurgen Bertram, Peter Werkhoff, Matthias Guntert
  • Use of 3-acylthiohexyl esters as aroma and odoriferous substances
    Patent number: 5830846
    Abstract: Use of 3-acylthiohexyl esters of the formula ##STR1## wherein R.sup.1 and R.sup.2 independently of one another represent hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.12 -aryl, including furyl and thienyl, as aroma and/or odoriferous substances, and aroma and odoriferous substance compositions containing these compounds.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: November 3, 1998
    Assignee: Haarmann & Reimer GmbH
    Inventors: Heinz-Jurgen Bertram, Jurgen Bruning, Matthias Guntert, Peter Werkhoff, Peter Worner
  • Use of thioalkanediones as aroma substances
    Patent number: 5466827
    Abstract: Thioalkane .alpha.,.beta.-diketones have interesting organoleptic properties and are therefore suitable as aroma substances.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: November 14, 1995
    Assignee: Haarmann & Reimer GmbH
    Inventors: Heinz-Jurgen Bertram, Roland Emberger, Matthias Guntert, Peter Werkhoff
  • Dimethylfuryl-dihydro-1,3,5-dithiazines
    Patent number: 5166342
    Abstract: Dimethylfuryl-dihydro-1,3,5-dithiazines are useful flavorings having low taste threshold values. They impart a coffee or mocha taste, in particular to drinks, confectionery and bakery products.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: November 24, 1992
    Assignee: Haarmann & Reimer
    Inventors: Jurgen Bruning, Roland Emberger, Matthias Guntert, Rudolf Hopp, Manfred Kopsel, Peter Werkhoff
  • Thio-alkanones, process for their preparation and their use
    Patent number: 5145703
    Abstract: The invention relates to new thio-alkanones of the formula ##STR1## in which X represents an oxygen or sulphur atom,R.sub.1 represents hydrogen or a C.sub.1 -C.sub.2 -alkyl group and the broken lines represent a single bond or no bond,to a process for their preparation and their use as flavorings.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: September 8, 1992
    Assignee: Haarmann & Reimer
    Inventors: Roland Emberger, Matthias Gunter, Rudolf Hopp, Manfred Kopsel, Walter Kuhn, Peter Werkhoff
  • Hemimercaptals, processes for their preparation, and edible compositions containing same
    Patent number: 4988526
    Abstract: New hemimercaptals of the formula ##STR1## in which X represents an oxygen or sulphur atom, a process for their preparation and their use as flavorings have been found.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: January 29, 1991
    Assignee: Haarmann & Reimer GmbH
    Inventors: Jurgen Bruning, Roland Emberger, Matthias Guntert, Rudolf Hopp, Manfred Kopsel, Theodor Sand, Peter Werkhoff
  • Unsymmetrical dihydrodithiazines, and their use as fragrances and flavorings
    Patent number: 4647662
    Abstract: Unsymmetrical dihydrodithiazines of the formula ##STR1## in which one of the substituents R.sub.1 and R.sub.2 represent a C.sub.3 -C.sub.5 -alkyl group while the other is a methyl group and R.sub.3 represents a hydrogen atom, or R.sub.1 represents a methyl group and R.sub.2 and R.sub.3 together form a C.sub.3 -C.sub.4 -alkylene radical, a process for their preparation and their use as fragrances and flavorings.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: March 3, 1987
    Assignee: Haarmann & Reimer GmbH
    Inventors: Jurgen Bruning, Roland Emberger, Rudolf Hopp, Manfred Kopsel, Theodor Sand, Peter Werkhoff
  • Recovery of caffeine adsorbed to activated carbon
    Patent number: 4540784
    Abstract: The invention relates to a process for recovering caffeine adsorbed to activated carbon by treating the loaded activated carbon with formic acid.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: September 10, 1985
    Assignee: Hag GF Aktiengesellschaft
    Inventors: Otto G. Vitzthum, Peter Werkhoff, Manfred Gehrig
  • Process for decaffeinating green coffee
    Patent number: 4308291
    Abstract: A process for decaffeinating green coffee comprising treating green coffee with at least one acetal of the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group and R.sup.2 and R.sup.3 are each a methyl group or an ethyl group, as an organic solvent, and removing solvent residues by steaming the treated green coffee.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: December 29, 1981
    Assignee: Hag Aktiengesellschaft
    Inventors: Peter Werkhoff, Peter Hubert
  • Pressure relief valve for packing containers
    Patent number: 4134535
    Abstract: A pressure relief valve for packages in which the valve element comprises a liquid impregnated porous element covering outlet openings in the package, with the liquid layer in the porous element being torn open by package contents pressures in excess of a predetermined value to permit gas outflow from the package.
    Type: Grant
    Filed: February 10, 1978
    Date of Patent: January 16, 1979
    Assignee: HAG Aktiengesellschaft
    Inventors: Manfred Barthels, Peter Werkhoff, Otto Vitzthum