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).

  • Patent number: 6235926
    Abstract: The present invention relates to perfumery of compounds of the general formula in which R1 and R2 are identical or different and represent each a methyl or ethyl group, R3 represents hydrogen or an alkyl group from C1 to C4, linear or branched, and R4 represents hydrogen, an alkyl group from C1 to C4, linear or branched, or an acyl group of formula R5C(O)—, R5 being hydrogen or an alkyl group from C1 to C4, linear or branched. The novel odoriferous character of these compounds is the combination of woody with fruity notes.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: May 22, 2001
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Hervé Pamingle, Christian Vial
  • Patent number: 6054426
    Abstract: The optically active compounds of formula ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl radical, or of formula ##STR2## are useful as perfuming ingredients for the preparation of perfuming compositions and perfumed articles to which they impart woody-amber notes.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: April 25, 2000
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Christian Margot, Christian Chapuis, Dana Philip Simmons, Daniel Reichlin
  • Patent number: 6008186
    Abstract: The present invention relates to the use in perfumery of compounds of the general formulae ##STR1## in which R.sup.1 and R.sup.2 are identical or different and represent each a methyl or ethyl group, R.sup.3 represents hydrogen or an alkyl group from C.sub.1 to C.sub.4, linear or branched, and R.sup.4 represents hydrogen, an alkyl group from C.sub.1 to C.sub.4, linear or branched, or an acyl group of formula R.sup.5 C(O)--, R.sup.5 being hydrogen or an alkyl group from C.sub.1 to C.sub.4, linear or branched. The novel odoriferous character of these compounds is the combination of woody with fruity notes. Also described is a synthesis for the preparation of the compounds of formula (I) starting from the compounds of formula (II).
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: December 28, 1999
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Herve Pamingle, Christian Vial
  • Patent number: 5166412
    Abstract: The compounds of the formula ##STR1## wherein R represents a 3,3-dimethyl-1-cyclopentyl or a 3,3-dimethyl-1-1cyclohexyl radical, R.sup.5 represents a saturated, linear or branched, C.sub.1 to C.sub.3 alkyl radical and, either R.sup.1 and R.sup.2 stand each for a hydrogen atom, R.sup.3 and/or R.sup.4 representing a methyl radical, or R.sup.3 and R.sup.4 represent each a hydrogen atom, R.sup.1 and/or R.sup.2 representing then a methyl radical, are novel compounds and useful perfuming ingredients, capable of imparting to the compositions into which they are incorporated odor notes of the musky-ambrette and fruity type.A process for the preparation of compounds (I) is disclosed.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: November 24, 1992
    Assignee: Firmenich S.A.
    Inventors: Wolfgang K. Giersch, Karl-Heinrich Schulte-Elte, Cyril Mahaim
  • Patent number: 5155238
    Abstract: Process for the preparation of polycyclic ethers of formula ##STR1## wherein X represents --(CH.sub.2).sub.n --, index n stands for integer 0 or 1, symbol R.sup.4 designates a hydrogen atom or a methyl radical, symbols R.sup.1 and R.sup.2, identical or different, represent each a hydrogen atom or a lower alkyl radical from C.sub.1 to C.sub.3 and R designates either a C.sub.1 to C.sub.6 linear or branched alkyl radical, or a substituted or unsubstituted alkenyl radical having 2 or 3 carbon atoms in the main chain, said alkenyl radical forming a ring such as indicated by the dotted line, which process comprises the cyclization by means of an acidic agent of an unsaturated compound:a) of formula ##STR2## having a double bond in one of the positions indicated by the dotted lines, and wherein index m defines an integer number equal to 1 or 2, symbol R.sup.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: October 13, 1992
    Assignee: Firmenich S.A.
    Inventors: Karl-Heinrich Schulte-Elte, Roger L. Snowden, Claudio Tarchini, Beatrice Baer, Christian Vial
  • Patent number: 5155239
    Abstract: Process for the preparation of polycyclic ethers of formula ##STR1## wherein X represents --(CH.sub.2).sub.n --, index n stands for integer 0 or 1, symbol R.sup.4 designated a hydrogen atom or a methyl radical, R.sup.2 identical or different, represent each a hydrogen atom or a lower alkyl radical from C.sub.1 to C.sub.3 and R designates either a C.sub.1 to C.sub.6 linear or branched alkyl radical, or a substituted or unsubstituted alkenyl radical having 2 or 3 carbon atoms in the main chain, said alkenyl radical forming a ring such as indicated by the dotted line, which process comprises the cyclization by means of an acidic agent of an unsaturated compound:a) of formula ##STR2## having a double bond in one of the positions indicated by the dotted lines, and wherein index m defines an integer number equal to 1 or 2, symbol R.sup.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: October 13, 1992
    Assignee: Firmenich S.A.
    Inventors: Karl-Heinrich Schulte-Elte, Roger L. Snowden, Claudio Tarchini, Beatrice Baer, Christian Vial
  • Patent number: 5151410
    Abstract: Spiro[5.7]tridec-1-ene-3-one is a useful perfuming ingredient for the preparation of perfuming bases and perfumed articles to which it imparts odor notes of the costus, animal and leather type.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: September 29, 1992
    Assignee: Firmenich S.A.
    Inventors: Wolfgang K. Giersch, Pierre-Alain Blanc, Karl-Heinrich Schulte-Elte
  • Patent number: 5118865
    Abstract: Novel compounds of formula ##STR1## wherein the dotted lines indicate the location of a single or double bond, symbol R.sup.1 stands for a hydrogen atom or a methyl radical, symbol R.sup.2 represents a linear or branched, saturated or unsaturated, C.sub.1 to C.sub.4 alkyl radical, provided that R.sup.1 is not hydrogen when R.sup.2 represents a methyl or n-propyl radical and the ring is saturated. Compounds (Ia) are useful as perfuming ingredients.A process for their preparation is disclosed.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: June 2, 1992
    Assignee: Firmenich SA
    Inventors: Christian Chapuis, Karl-Heinrich Schulte-Elte, Herve Pamingle, Christian Margot
  • Patent number: 5081312
    Abstract: New 4,4,5,8-tetramethyl-1-oxaspiro[2,5]octane. A process for its preparation starting from 2,2,3,6-tetramethyl-1-cyclohexanone is described.4,4,5,8-Tetramethyl-1-oxaspiro[2,5]octane is a useful raw material for the preparation of 2,2,3,6-tetramethyl-cyclohexane-carbaldehyde, a key intermediate for the synthesis of valuable fragrance ingredients.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: January 14, 1992
    Assignee: Firmenich SA
    Inventors: Christian Chapuis, Christian Margot, Karl-Heinrich Schulte-Elte, Herve Pamingle
  • Patent number: 5077417
    Abstract: Process for the preparation of polycyclic ethers of formula ##STR1## wherein X represents --(CH.sub.2).sub.n --, index n stands for integer 0 or 1, symbol R.sup.4 designates a hydrogen atom or a methyl radical, symbols R.sup.1 and R.sup.2, identical or different, represent each a hydrogen atom or a lower alkyl radical from C.sub.1 to C.sub.3 and R designates either a C.sub.1 to C.sub.6 linear or branched alkyl radical, or a substituted or unsubstituted alkylene radical having 2 or 3 carbon atoms in the main chain, said alkylene radical forming a ring such as indicated by the dotted line, which process comprises the cyclization by means of an acidic agent of an unsaturated compound:a) of formula ##STR2## having a double bond in one of the positions indicated by the dotted lines, and wherein index m defines an integer number equal to 1 or 2, symbol R.sup.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: December 31, 1991
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Roger L. Snowden, Claudio Tarchini, Beatrice Baer, Christian Vial
  • Patent number: 5017711
    Abstract: New 4,4,5,8-tetramethyl-1-oxaspiro[2.5]octane. A process for its preparation starting from 2,2,3,6-tetramethyl-1-cyclohexanone is described.4,4,5,8-Tetramethyl-1-oxaspiro[2.5]octane is a useful raw material for the preparation of 2,2,3,6-tetramethyl-cyclohexane-carbaldehyde, a key intermediate for the synthetis of valuable fragrance ingredients.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: May 21, 1991
    Assignee: Firmenich S.A.
    Inventors: Christian Chapuis, Christian Margot, Karl-Heinrich Schulte-Elte, Herve Pamingle
  • Patent number: 4990495
    Abstract: Oxygen containing macrocyclic compounds of formula ##STR1## wherein (a) the dotted lines indicate the location of an endocyclic single or double bond in positions 4 and 8 of the ring and of an exocyclic carbon-oxygen single bond in position 1, the wavy lines define a C--C bond of E or Z configuration when the bond in positions 4 and 8 is a double bond, and the symbols Z.sup.1 and Z.sup.2, taken together, define a cyclic acetal or ketal group represented by the formula ##STR2## wherein the symbols R.sup.1 and R.sup.2, identical or different, represent each an alkyl radical, linear or branched, containing from 1 to 6 carbon atoms, or one of said symbols represents a hydrogen atom and the other an alkyl radical defined as above;or wherein(b) the symbol Z.sup.1 stands for an oxygen atom or an OH group, the dotted lines indicate the location of an endocyclic single or double bond in positions 4 and 8 of the ring and of an exocyclic carbon-oxygen single (Z.sup.1 .dbd.OH) or double (Z.sup.1 .dbd.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: February 5, 1991
    Assignee: Firmenich S.A.
    Inventors: Wolfgang K. Giersch, Karl-Heinrich Schulte-Elte
  • Patent number: 4929599
    Abstract: The bicyclic ester represented by the formula ##STR1## or 2-(2,3,4,5,6,7-hexahydro-1,1,4,4-tetramethyl-2(1H)-indenyl)-ethyl acetate, develops odor characters of the woody, slightly amber and musky type, and can therefore be advantageously used for the preparation of perfuming compositions or perfumes, and for perfuming products such as soaps, cosmetic preparations, detergents, fabric softeners or air deodorizers.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 29, 1990
    Assignee: Firmenich SA
    Inventors: Wolfgang K. Giersch, Karl-Heinrich Schulte-Elte
  • Patent number: 4731356
    Abstract: 2,3-Epoxy-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-butanone, an epoxy ketone of formula ##STR1## possess useful fragrance characters and, consequently, it can be used advantageously in the manufacture of perfume, perfume bases and perfumed products. It develops a flowery and fruity odor.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: March 15, 1988
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Dietrich Kastner
  • Patent number: 4717771
    Abstract: 2,3-Epoxy-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-butanone, an epoxy ketone of formula ##STR1## possesses useful fragrance characters and, consequently, it can be used advantageously in the manufacture of perfume, perfume bases and perfumed products. It develops a flowery and fruity odor.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: January 5, 1988
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Dietrich Kastner
  • Patent number: 4711875
    Abstract: Composition consisting of from less than 100% to more than about 80% of trans-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol and a definite amount, but not more than about 20%, of cis-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol.Process for preparing same from .beta.-cyclocitral via a three-, optionally, four-step pathway.Utilization of the said composition as effective perfume ingredient.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: December 8, 1987
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Gunther Ohloff, Bernard L. Muller, Wolfgang K. Giersch
  • Patent number: 4626381
    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: December 17, 1985
    Date of Patent: December 2, 1986
    Assignee: Firmenich SA
    Inventor: Karl-Heinrich Schulte-Elte
  • Patent number: 4626602
    Abstract: Novel cycloaliphatic alcohols of formula ##STR1## wherein each of symbols R.sup.1 and R.sup.2 designates a methyl radical or wherein R.sup.1 designates an ethyl radical and R.sup.2 stands for a methyl radical or a hydrogen atom, possess useful fragrance properties and consequently can be used in the perfume industry.A process for their preparation starting from an allenic carbinol is disclosed.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: December 2, 1986
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Herve Pamingle
  • Patent number: 4623750
    Abstract: Composition consisting of from less than 100% to more than about 80% of trans-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol and a definite amount, but not more than about 20%, of cis-1-(2,6,6-trimethylcyclohexyl)-hexan-3-ol.Process for preparing same from .beta.-cyclocitral via a three-, optionally, four-step pathway.Utilization of the said composition as effective perfume ingredient.
    Type: Grant
    Filed: February 28, 1984
    Date of Patent: November 18, 1986
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Gunther Ohloff, Bernard L. Muller, Wolfgang K. Giersch
  • Patent number: 4610813
    Abstract: Novel compounds of formula ##STR1## wherein: a. R.sup.1 =CH.sub.3 ; n=m=1; R.sup.2 =CH.sub.3 ; R.sup.3 =R.sup.4 =H,b. R.sup.1 =CH.sub.2 ; n=0; m=1; R.sup.2 =CH.sub.3 ;R.sup.3 =R.sup.4 =H,C. R.sup.1 =CH--CH.sub.3 ; n=0; m=1; R.sup.2 =CH.sub.3 ; R.sup.3 =R.sup.4 =H,d. R.sup.1 =H; n=m=0; R.sup.2 =R.sup.4 =CH.sub.3 ; R.sup.3 =C.sub.2 H.sub.5,e. R.sup.1 =H; n=m=0; R.sup.2 =R.sup.3 =R.sup.4 =CH.sub.3,f. R.sup.1 =H; n=m=0; R.sup.2 =CH.sub.3 ; R.sup.3 =C.sub.2 H.sub.5 ; R.sup.4 =H,g. R.sup.1 =H; n=m=0; R.sup.2 =R.sup.3 =CH.sub.3 ; R.sup.4 =H,h. R.sup.1 =H; n=m=1; R.sup.2 =CH.sub.3 ; R.sup.3 =C.sub.2 H.sub.5 ; R.sup.4 =Hi. R.sup.1 =H; n=m=1; R.sup.2 =R.sup.3 =CH.sub.3 ; R.sup.4 =Hand wherein one of the dotted lines stands for a single carbon-carbon bond and the other one for a double bond, or each of them designates a single bond, possess odorous properties of sandalwood type and consequently can find a utility for the preparation of perfumes and perfumed products.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: September 9, 1986
    Assignee: Firmenich SA
    Inventors: Karl-Heinrich Schulte-Elte, Bernard L. Muller, Herve Pamingle