Patents by Inventor Karl-Heinrich Schulte-Elte

Karl-Heinrich Schulte-Elte 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).

  • Process for the preparation of an isomeric mixture of 1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol
    Patent number: 4588849
    Abstract: Process for the preparation of an isomeric mixture of cis- and trans-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol according to a three-step pathway starting from trimethylcyclohexanone.
    Type: Grant
    Filed: February 28, 1984
    Date of Patent: May 13, 1986
    Assignee: Firmenich SA
    Inventor: Karl-Heinrich Schulte-Elte
  • Acetylenic and allenic carbinols, their utilization as starting materials for the preparation of .beta.-damascenone and process for preparing same
    Patent number: 4487944
    Abstract: New acetylenic and allenic carbinols of formula ##STR1## respectively, wherein symbol R stands for a trialkyl-silyl or a C.sub.1 to C.sub.6 alkyl radical, preferably a methyl, a tert-butyl or an isoamyl radical, or a group of formula ##STR2## wherein, when taken separately, each of symbols R.sup.1 and R.sup.2 represents a lower alkyl radical or, when taken together, R.sup.1 and R.sup.2 represent a tetramethylene group, are useful intermediates for the preparation of .beta.-damascenone.
    Type: Grant
    Filed: September 27, 1983
    Date of Patent: December 11, 1984
    Assignee: Firmenich, SA
    Inventors: Karl-Heinrich Schulte-Elte, Bernard M/u/ ller
  • Tricyclic compounds and use thereof as perfume ingredients
    Patent number: 4453000
    Abstract: New tricyclic compounds and use thereof as perfume ingredients. Perfume compositions and perfumed articles containing same.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: June 5, 1984
    Assignee: Firmenich, S.A.
    Inventors: Karl-Heinrich Schulte-Elte, Herve Pamingle
  • Oxygenated alicyclic compounds and process for preparing same
    Patent number: 4369328
    Abstract: New oxygenated alicyclic compounds of formula ##STR1## (X=OH, alkyl, O-alkyl) are useful as starting materials for the preparation of cyclohexadienic derivatives of formula ##STR2## (X=OH, alkyl, O-alkyl). They are converted into compounds (III) by treating them with an acidic dehydrating agent in the presence of an inert organic solvent.Compounds (I) are manufactured by reacting compounds (II) ##STR3## (X=OH, alkyl, O-alkyl) with an organic peracid.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: January 18, 1983
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Bernard Egger, Bernard Muller
  • Pyranic derivatives for use in the preparation of muscone
    Patent number: 4341897
    Abstract: New process for the preparation of muscone, a valuable macrocyclic musky perfume ingredient. The process makes use of an .alpha.,.omega.-dialdehyde as starting material.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: July 27, 1982
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Arnold Hauser, Gunther Ohloff
  • Cyclopentane derivatives useful as perfuming agents
    Patent number: 4338458
    Abstract: Cyclopentane derivatives useful as odor-modifying ingredients for manufacturing perfumes and perfumed products and perfume compositions containing same.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: July 6, 1982
    Assignee: Firmenich SA
    Inventor: Karl-Heinrich Schulte-Elte
  • Cyclic C.sub.6 esters and their use in perfumes
    Patent number: 4289659
    Abstract: New oxygenated alicyclic derivatives useful as perfuming and odor modifying agents in the manufacture of perfumes or perfumed products, and as flavoring and taste-modifying agents in the aromatization of foodstuffs in general and imitation flavors for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products.Novel processes for the preparation of said alicyclic derivatives and compositions of matter relating to mixtures containing same.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: September 15, 1981
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Bruno Willhalm, Fritz Gautschi
  • Cyclopentane derivatives useful as perfuming agents
    Patent number: 4280934
    Abstract: Cyclopentane derivatives useful as odor-modifying ingredients for manufacturing perfumes and perfumed products and perfume compositions containing same.
    Type: Grant
    Filed: February 17, 1979
    Date of Patent: July 28, 1981
    Assignee: Firmenich SA
    Inventor: Karl-Heinrich Schulte-Elte
  • Process for the preparation of muscone
    Patent number: 4277625
    Abstract: New process for the preparation of muscone, a valuable macrocyclic musky perfume ingredient. The process makes use of an .alpha.,.omega.-dialdehyde as starting material.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: July 7, 1981
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Arnold Hauser, Gunther Ohloff
  • Cyclic C.sub.6 compounds and their use in perfumes
    Patent number: 4264467
    Abstract: New oxygenated alicyclic derivatives useful as perfuming and odor modifying agents in the manufacture of perfumes or perfumed products, and as flavoring and taste-modifying agents in the aromatization of foodstuffs in general and imitation flavors for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products.Novel processes for the preparation of said alicyclic derivatives and compositions of matter relating to mixtures containing same.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: April 28, 1981
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Bruno Willhalm, Fritz Gautschl
  • Perfume compositions containing spirane derivatives
    Patent number: 4252693
    Abstract: New spirane derivatives useful as odor- and flavor-modifying ingredients for preparing perfumes, perfumed products, for the manufacture of artificial flavors or for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: February 24, 1981
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Peter Fankhauser, Gunther Ohloff
  • Use of spirane derivatives to improve the organoleptic properties of foodstuffs, feedstuffs, or beverages
    Patent number: 4218488
    Abstract: Spirane derivatives, most of them are new, useful, and as flavor-modifying ingredients for the manufacture of artificial flavors of for flavoring foodstuffs, animal feeds or, beverages.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: August 19, 1980
    Assignee: Firmenich SA
    Inventors: Walter Renold, Werner Skorianetz, Karl-Heinrich Schulte-Elte, Gunther Ohloff
  • Process for preparing a furanic compound
    Patent number: 4203907
    Abstract: Process for preparing 3-methyl-2-[3-methyl-but-2-en-1-yl]-furan, known under the trivial name of rosefuran, starting from cheaply available furfural via a four-step synthesis.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: May 20, 1980
    Assignee: Firmenich, S.A.
    Inventors: Richard C. Cookson, Karl-Heinrich Schulte-Elte, Arnold Hauser
  • Spirane derivatives useful as perfuming and flavor-modifying ingredients
    Patent number: 4179448
    Abstract: New spirane derivatives useful as odor- and flavor-modifying ingredients for preparing perfumes, perfumed products, for the manufacture of artificial flavors or for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: December 18, 1979
    Assignee: Firmenich, S.A.
    Inventors: Karl-Heinrich Schulte-Elte, Peter Fankhauser, Gunther Ohloff
  • Spirane derivatives
    Patent number: 4174327
    Abstract: Spirane derivatives, most of them are new, useful as odor-modifying ingredients for manufacturing perfumes and perfumed products, and as flavor-modifying ingredients for the manufacture of artificial flavors of for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.Process for preparing said spirane derivatives.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: November 13, 1979
    Assignee: Firmenich SA
    Inventors: Walter Renold, Werner Skorianetz, Karl-Heinrich Schulte-Elte, Gunther Ohloff
  • Cyclic C.sub.6 ketones in perfumes
    Patent number: 4147672
    Abstract: New oxygenated alicyclic derivatives useful as perfuming and odor modifying agents in the manufacture of perfumes or perfumed products, and as flavoring and taste-modifying agents in the aromatization of foodstuffs in general and imitation flavors for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products.Novel processes for the preparation of said alicyclic derivatives and compositions of matter relating to mixtures containing same.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: April 3, 1979
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Bruno Willhalm, Fritz Gautschi
  • Use of spirane derivatives to improve perfume compositions
    Patent number: 4120830
    Abstract: Spirane derivatives, most of them are new, useful as odor-modifying ingredients for manufacturing perfumes and perfumed products, and as flavor-modifying ingredients for the manufacture of artificial flavors of for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.Process for preparing said spirane derivatives.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: October 17, 1978
    Assignee: Firmenich SA
    Inventors: Walter Renold, Werner Skorianetz, Karl-Heinrich Schulte-Elte, Gunther Ohloff
  • Spirane derivatives, their use and process for preparing same
    Patent number: 4114630
    Abstract: Spirane derivatives, most of them are new, useful as odor-modifying ingredients for manufacturing perfumes and perfumed products, and as flavor-modifying ingredients for the manufacture of artificial flavors of for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.Process for preparing said spirane derivatives.
    Type: Grant
    Filed: October 21, 1976
    Date of Patent: September 19, 1978
    Assignee: Firmenich SA
    Inventors: Walter Renold, Werner Skorianetz, Karl-Heinrich Schulte-Elte, Gunther Ohloff
  • Process for the preparation of 2,2,6-trimethyl-cyclohex-5-en-1,4-dione
    Patent number: 4026948
    Abstract: Process for the preparation of a diketone derivative useful as perfuming and taste-modifying agent as well as intermediate for the preparation of compounds having utility in the pharmaceutical and dye-stuff industry.
    Type: Grant
    Filed: August 24, 1976
    Date of Patent: May 31, 1977
    Assignee: Firmenich S.A.
    Inventors: Joseph J. Becker, Karl-Heinrich Schulte-Elte, Hugo Strickler, Gunther Ohloff
  • Esters of certain tetramethyl and pentamethyl-1-oxa-spiro [4-5] decan-6-ols with certain alkanoic acids
    Patent number: 4014905
    Abstract: Spirane derivatives, most of them are new, useful as odor-modifying ingredients for manufacturing perfumes and perfumed products, and as flavor-modifying ingredients for the manufacture of artificial flavors of for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.Process for preparing said spirane derivatives.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: March 29, 1977
    Assignee: Firmenich S.A.
    Inventors: Werner Skorianetz, Walter Renold, Gunther Ohloff, Karl-Heinrich Schulte-Elte