Patents by Inventor Hanspeter Schenk

Hanspeter Schenk 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).

  • Tri- and tetra-substituted cyclohexen-1-methyl acetates as odorants
    Patent number: 4609491
    Abstract: Novel odorant substances of the formula: ##STR1## wherein: one of the three dotted lines represents an optional bond,R.sup.1 represents hydrogen, an alkyl group of one to four carbons or an alkenyl group of two to four carbons,R.sup.2 represents hydrogen or methyl,R.sup.3 represents hydrogen or methyl, provided thatR.sup.2 and R.sup.3 are never both hydrogen, and novel fragrance compositions containing same.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: September 2, 1986
    Assignee: Givaudan Corporation
    Inventor: Hanspeter Schenk
  • Flavorants containing esters of 2,3,6,6-tetramethylcyclohexenyl carboxylic acids
    Patent number: 4570648
    Abstract: Novel esters, of the general formula ##STR1## wherein R represents C.sub.1-4 -alkyl or C.sub.2-4 -alkenyl and one of the three broken lines represents an additional bond,are disclosed. Also disclosed are novel odorant and/or flavouring compositions containing esters or formula I, a process and intermediates for the manufacture of the esters of formula I and the use of esters of formula I as odorant and/or flavouring substances.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: February 18, 1986
    Assignee: Givaudan Corporation
    Inventor: Hanspeter Schenk
  • Odorants containing esters of 2,3,6,6-tetramethylcyclohexenyl carboxylic acids
    Patent number: 4474687
    Abstract: Novel esters, of the general formula ##STR1## wherein R represents C.sub.1-4 -alkyl or C.sub.2-4 -alkenyl and one of the three broken lines represents an additional bond,are disclosed. Also disclosed are novel odorant and/or flavoring compositions containing esters of formula I, a process and intermediates for the manufacture of the esters of formula I and the use of esters of formula I as odorant and/or flavoring substances.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: October 2, 1984
    Assignee: Givaudan Corporation
    Inventor: Hanspeter Schenk
  • Esters of substituted 2,2-dimethylcyclohexanoic acid
    Patent number: 4439353
    Abstract: Novel substituted 2,2-dimethylcyclohexanoic acid derivatives of the formula: ##STR1## wherein: R.sup.1 represents an alkyl group of one to four carbons;R.sup.2 represents hydrogen or methyl;R.sup.3 represents hydrogen or methyl; butR.sup.2 and R.sup.3 are never both hydrogen;and novel fragrance and flavoring compositions containing same.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: March 27, 1984
    Assignee: Givaudan Corporation
    Inventor: Hanspeter Schenk
  • Esters of 2,3,6,6-tetramethyl-cyclohexenyl carboxylic acids and odorant mixtures thereof
    Patent number: 4375001
    Abstract: Novel esters, of the general formula ##STR1## wherein R represents C.sub.1-4 -alkyl or C.sub.2-4 -alkenyl and one of the three broken lines represents an additional bond,are disclosed. Also disclosed are novel odorant and/or flavoring compositions containing esters of formula I, a process and intermediates for the manufacture of the esters of formula I and the use of esters of formula I as odorant and/or flavoring substances.
    Type: Grant
    Filed: June 4, 1980
    Date of Patent: February 22, 1983
    Inventors: Givaudan Corporation, Hanspeter Schenk
  • 2-Ethyl-6,6-dimethyl-2-cyclohexene-1-carboxylic acid ethyl ester perfume compositions
    Patent number: 4113663
    Abstract: The 2-ethyl-6,6-dimethyl-2-cyclohexene-1-carboxylic acid ethyl ester possesses uniquely-desirable olfactory properties.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: September 12, 1978
    Assignee: Givaudan Corporation
    Inventor: Hanspeter Schenk
  • 2-Ethyl-3,6,6-trimethyl-1-crotonyl-2-cyclohexene-type compounds and perfume compositions
    Patent number: 4018718
    Abstract: Novel odorants of the formula: ##STR1## wherein one of three lines indicated by dots represents an additional bond.The use of these compounds as odorants, process for the preparation of said compounds, and novel intermediates are also disclosed.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: April 19, 1977
    Assignee: Givaudan Corporation
    Inventors: Paul Albert Ochsner, Hanspeter Schenk
  • Z-ethyl-3,6,6-trimethyl-2-cyclohexene-1-carboxylic acid esters
    Patent number: 4006108
    Abstract: Novel odorants of the formula: ##STR1## wherein one of three lines indicated by dots represents an additional bond.The use of these compounds as odorants, process for the preparation of said compounds, and novel intermediates are also disclosed.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: February 1, 1977
    Assignee: Givaudan Corporation
    Inventors: Paul Albert Ochsner, Hanspeter Schenk
  • Cycloaliphatic ketones, process for making same and odorant and flavoring compositions containing same
    Patent number: 3979422
    Abstract: Novel cycloaliphatic ketones, a process for making them and odorant and/or flavoring compositions containing the ketones are described.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: September 7, 1976
    Assignee: Givaudan Corporation
    Inventors: Hanspeter Schenk, Trudi Sigg-Grutter