Patents by Inventor Amnon Mordechai Cohen

Amnon Mordechai Cohen 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).

  • Alicyclic ketoester perfume compositions
    Patent number: 4016109
    Abstract: New alicyclic ketoesters having the generic formula ##STR1## wherein R represents a hydrocarbon radical containing from 4 to 8 carbon atoms, and R' represents an alkyl radical containing from 1 to 2 carbon atoms, are prepared, in one embodiment, by condensing the methyl or ethyl ester of propane-1,2,3-tricarboxylic acid with methyl or ethyl esters of 2-bromo acids containing from 6 to 9 carbon atoms, and hydrolyzing, decarboxylating and re-esterifying the resulting cyclic keto-triesters.The new compounds have olfactory properties and are useful in the production of a great variety of perfumes.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: April 5, 1977
    Assignee: Polak's Frutal Works N.V.
    Inventor: Amnon Mordechai Cohen
  • Alicyclic ketoesters and process for their manufacture
    Patent number: 3954834
    Abstract: New alicyclic ketoesters having the generic formula ##SPC1##Wherein R represents a hydrocarbon radical containing from 4 to 8 carbon atoms, and R' represents an alkyl radical containing from 1 to 2 carbon atoms, are prepared, in one embodiment, by condensing the methyl or ethyl ester of propane-1,2,3-tricarboxylic acid with methyl or ethyl esters of 2-bromo acids containing from 6 to 10 carbon atoms, and hydrolyzing, decarboxylating and re-esterifying the resulting cyclic keto-triesters.The new compounds have olfactory properties and are useful in the production of a great variety of perfumes.
    Type: Grant
    Filed: November 26, 1973
    Date of Patent: May 4, 1976
    Assignee: Polak's Frutal Works N.V.
    Inventor: Amnon Mordechai Cohen
  • Process for the preparation of 3-mono-alkyl and 3,6-dialkyl-resorcylic esters
    Patent number: 3944596
    Abstract: Mono- and dialkyl-resorcylic esters of the general formula ##SPC1##Wherein R.sup.1 is hydrogen or an alkyl radical containing up to three carbon atoms, R.sup.2 represents an alkyl radical (preferably a lower alkyl radical such as methyl or ethyl) and R.sup.3 represents methyl or ethyl, are prepared by reacting the corresponding dihydroresorcylic esters having the general formula ##SPC2##With organic N-haloamides. Halocaprolactams, and especially N-chlorocaprolactam, are preferred reactants.
    Type: Grant
    Filed: November 23, 1973
    Date of Patent: March 16, 1976
    Assignee: P.F.W. Beheer B.V.
    Inventor: Amnon Mordechai Cohen