Patents by Inventor Hugo Strickler

Hugo Strickler 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 a bicyclic alcohol
    Patent number: 4163866
    Abstract: .alpha.-Ambrinol, a bicyclic alcohol of formula ##STR1## is prepared by a novel process starting from .beta.-ionone via cyclization followed by catalytic reduction.
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: August 7, 1979
    Assignee: Firmenich SA
    Inventor: Hugo Strickler
  • Tricyclo[5.2.1.0.sup.2,6 ]decane-methylol or its lower alkyl or alkenyl ester or ether derivatives in perfume compositions
    Patent number: 4123394
    Abstract: Processes and compositions are described for improving, enhancing and modifying the fragrance of products including perfumes, perfume compositions and perfumed articles utilizing as effective ingredients tricyclo[5.2.1.0.sup.2,6 ]decane-methylol or one of its lower alkyl or alkenyl ester or ether derivatives.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: October 31, 1978
    Assignee: Firmenich SA
    Inventors: Werner Skorianetz, Khurshid P. Dastur, Hugo Strickler
  • 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
  • Process for the preparation of a diketone derivative
    Patent number: 4010205
    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: November 26, 1974
    Date of Patent: March 1, 1977
    Assignee: Firmenich S.A.
    Inventors: Joseph J. Becker, Karl-Heinrich Schulte-Elte, Hugo Strickler, Gunther Ohloff
  • Process for the preparation of unsaturated aldehydes
    Patent number: 3979425
    Abstract: The present invention relates to a novel process for preparing unsaturated aldehydes comprising four double bonds of formula ##SPC1##Wherein one of the double bonds is represented by the dotted lines. Aldehyde Ia (called .alpha.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the main carbon chain. Aldehyde Ib (called .beta.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the side chain. The invention also relates to new intermediates used in the said new process and to methods for preparing them. The said intermediates have also valuable organoleptic properties and are useful as fragrances in the preparation of perfumes, perfumed products and artificial essential oils.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: September 7, 1976
    Assignee: Firmenich S.A.
    Inventors: George Hermann Buchi, Hans Wuest, Gunther Ohloff, Hugo Strickler
  • 4-Methyl-8-vinyl-4,7- and -4,8-nonadienals
    Patent number: 3963783
    Abstract: The present invention relates to a novel process for preparing unsaturated aldehydes comprising four double bonds of formula ##SPC1##Wherein one of the double bonds is represented by the dotted lines. Aldehyde Ia (called .alpha.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the main carbon chain. Aldehyde Ib (called .beta.-sinensal) corresponds to the above formula wherein the double bond represented by the dotted lines is in the side chain. The invention also relates to new intermediates used in the said new process and to methods for preparing them. The said intermediates have also valuable organoleptic properties and are useful as fragrances in the preparation of perfumes, perfumed products and artificial essential oils.
    Type: Grant
    Filed: June 12, 1968
    Date of Patent: June 15, 1976
    Assignee: Firmenich S.A.
    Inventors: George Hermann Buchi, Hans Wuest, Gunther Ohloff, Hugo Strickler
  • Process for the preparation of a diketone derivative
    Patent number: 3931327
    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: December 3, 1974
    Date of Patent: January 6, 1976
    Assignee: Firmenich SA
    Inventors: Hugo Strickler, Joseph J. Becker, Gunther Ohloff