Patents by Inventor Anatoly Alexander

Anatoly Alexander 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: 9416082
    Abstract: The present invention concerns a process for the isomerization of an exo double bond toward an endo double bond being performed in the presence of a catalyst system comprising palladium (Pd) or platinum (Pt) and molecular hydrogen or a hydrogen source.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: August 16, 2016
    Assignee: Firmenich SA
    Inventors: Ramez Boshra, Koenraad Vanhessche, Anatoly Alexander
  • Publication number: 20160060200
    Abstract: The present invention concerns a process for the isomerisation of an exo double bond toward an endo double bond being performed in the presence of a catalyst system comprising palladium (Pd) or platinum (Pt) and molecular hydrogen or a hydrogen source.
    Type: Application
    Filed: February 7, 2014
    Publication date: March 3, 2016
    Applicant: FIRMENICH SA
    Inventors: Ramez BOSHRA, Koenraad VANHESSCHE, Anatoly ALEXANDER
  • Patent number: 6462201
    Abstract: A single stage process, with recirculation of reactants, is provided herein for making N-vinylpyrrolidone or N-vinyl caprolactam at a high reaction rate and selectivity and at a predetermined conversion per pass. In this process a reaction mixture is formed by saturating a non-aqueous, liquid mixture of recirculating lactam, vinyl lactam and catalyst with acetylene at low temperatures and pressures to provide a high concentration of acetylene in the liquid, pumping the saturated solution into a reactor, reacting the mixture as a single liquid phase, cooling the reaction product, withdrawing a portion of the cooled product, recirculating the rest into the reaction mixture, and continuously feeding additional lactam and catalyst therein.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: October 8, 2002
    Assignee: ISP Investments Inc.
    Inventors: Anatoly Alexander, Mikhail Raykh
  • Patent number: 5731450
    Abstract: This invention relates to the synthesis of vegetable and synthetic oil adducts and to the adduct products having the formula ##STR1##
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: March 24, 1998
    Assignee: ISP Van Dyk Inc.
    Inventors: Anatoly Alexander, Ratan K. Chaudhuri
  • Patent number: 5527947
    Abstract: This invention relates to an improved process for the manufacture of cinnamate compounds, particularly sunscreen agents, useful in cosmetic skin and hair care formulations. The process comprises: (a) dissolving a water insoluble C.sub.1 to C.sub.4 alkoxy benzaldehyde and a C.sub.1 to C.sub.4 alkyl acetate in a common hydrocarbon solvent; (b) reacting the resulting solution in the presence of a strong alkali metal-containing base under mild conditions to form a mixture containing the corresponding C.sub.1 to C.sub.4 alkyl C.sub.1 to C.sub.4 alkoxy cinnamate, the alkali metal salt of the enol corresponding to the C.sub.1 to C.sub.4 alkyl C.sub.1 to C.sub.4 alkoxy cinnamate, the alkali metal salt of a C.sub.1 to C.sub.4 alkoxycinnamic acid, and a C.sub.1 to C.sub.4 alkanol; (c) acidifying the resulting mixture with from about 0.5 to about 1 mole of a strong polybasic acid per mole of base to release acetic acid, to convert the alkali metal salt of the C.sub.1 to C.sub.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: June 18, 1996
    Assignee: ISP Van Dyk Inc.
    Inventors: Anatoly Alexander, Ratan K. Chaudhuri
  • Patent number: 5451394
    Abstract: This invention relates to non-hydrolyzable, non-irritating, hair, skin and textile substantive quaternary ammonium salts of a para-dialkylamino benzamide having the formula ##STR1## wherein R' and R" are each selected from the group of C.sub.1 to C.sub.2 alkyl; n is an integer having a value of from 2 to 6; R is an alkyl radical having from 1 to 30 carbon atoms; R.sub.1 and R.sub.2 are each selected from the group of C.sub.1 to C.sub.4 alkyl, hydrogen and, alternatively, R.sub.1 and R.sub.2, together with the attached cationic nitrogen atom can form a 5 to 6-membered heterocyclic ring selected from the group of ##STR2## and X is an anion. These benzamide derivatives are active sunscreening agents which are usefully employed at a concentration of from about 0.5 to about 10 wt. % in a formulation requiring protection against the harmful effects of sunlight, such as skin burn, hair damage, color fading, etc.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: September 19, 1995
    Assignee: ISP Van Dyk Inc.
    Inventors: Ratan K. Chaudhuri, Anatoly Alexander, Anna A. Gripp
  • Patent number: 5427773
    Abstract: This invention relates to non-hydrolyzable, non-irritating, hair, skin and textile substantive quaternary salts of p-dialkylaminobenzamides having the formula ##STR1## wherein R' and R" are each selected from the group of C.sub.1 to C.sub.2 alkyl; n is an integer having a value of from 2 to 3; R is an alkyl radical having from 10 to 18 carbon atoms; R.sub.1 and R.sub.2 are each selected from the group of C.sub.1 to C.sub.2 alkyl, and X is an anion. These benzamide derivatives are active sunscreening agents which are usefully employed at a concentration of from about 0.5 to about 10 wt. % in a formulation requiring protection against the harmful effects of sunlight, such as skin burn, hair damage, color fading, etc.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: June 27, 1995
    Assignee: ISP Van Dyk Inc.
    Inventors: Ratan K. Chaudhuri, Anatoly Alexander, Anna A. Gripp
  • Patent number: 5427774
    Abstract: This invention relates to non-hydrolyzable, non-irritating, hair, skin and textile substantive quaternary ammonium salts of a para-dialkylamino benzamide having the formula ##STR1## wherein R' and R" are each selected from the group of C.sub.1 to C.sub.2 alkyl; n is an integer having a value of from 2 to 6; R is an alkyl radical having from 1 to 30 carbon atoms; R.sub.1 and R.sub.2 together with the attached cationic nitrogen atom forms a 5 to 6-membered heterocyclic ring containing a hetero oxygen atom in addition to the heteronitrogen atom and is selected from the group of ##STR2## and X is an anion. These benzamide heterocyclic derivatives are active sunscreening agents which are usefully employed at a concentration of from about 0.5 to about 10 wt. % in a formulation requiring protection against the harmful effects of sunlight, such as skin burn, hair damage, color fading, etc.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: June 27, 1995
    Assignee: ISP Van Dyk Inc.
    Inventors: Ratan K. Chaudhuri, Anatoly Alexander, Anna A. Gripp
  • Patent number: 5252197
    Abstract: A process for upgrading gasolines and other hydrocarbon mixtures. The hydrocarbon mixture is contacted with a large pore zeolite catalyst in order to crack n-paraffins to form olefins and lower molecular weight n-paraffins, to cause the olefins to react with benzene in order to form alkylbenzenes, and to catalyze the isomerization of the n-paraffins to form i-paraffins. Preferably, all of the above reactions occur in a single reactant mixture in the presence of a zeolite catalyst having ten and/or twelve membered ring-type structures. The process of the invention reduces the benzene quantity of the hydrocarbon mixture and increases its octane number.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: October 12, 1993
    Assignee: ABB Lummus Crest Inc.
    Inventors: Anatoly Alexander, Chuen Y. Yeh, George D. Suciu