Patents by Inventor Gad Friedman

Gad Friedman 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).

  • Publication number: 20120029223
    Abstract: Substituted alkyl methyl malonate compounds are produced in an essentially one step method, the method suitable for large scale production of alkyl malonate compounds. According to one embodiment the method comprises reacting a methyl malonate with a di-functional, doubly tosylated, alkyl chain.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 2, 2012
    Inventors: Gad Friedman, Andreas Stadelmaier
  • Patent number: 7384579
    Abstract: Pentabromobenzyl acrylate (PBBMA), a useful flame retardant insoluble in water, is provided as an aqueous fluid for industrial applications. The fluid is an easy to handle, stable suspension of finely ground PBBMA in water.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: June 10, 2008
    Assignee: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Patent number: 7338533
    Abstract: A process for the fire retardation of textile materials comprising applying to the textile materials aqueous suspensions of finely ground pentabromobenzyl acrylate particles, suspending agents chosen from xanthan gums, anionic purified suspending agents, nonionic purified suspending agents, sodium montmorillonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium, calcium or ammonium salts of sulphonated lignin, acrylic acids/acrylic acids ester copolymer neutralized-sodium polycarboxyl, and wetting agents chosen from alkyl ethers, arylalkyl ethers, fatty acid diester and sorbitan monoesters, and polyoxyethylene compounds.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: March 4, 2008
    Assignee: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Patent number: 7317060
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized-sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: January 8, 2008
    Assignee: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Publication number: 20050148788
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized—sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 7, 2005
    Applicant: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Patent number: 6872332
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthane gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized—sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: March 29, 2005
    Assignee: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Publication number: 20050012082
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized-sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Application
    Filed: August 11, 2004
    Publication date: January 20, 2005
    Applicant: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Publication number: 20050009933
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized-sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Application
    Filed: August 11, 2004
    Publication date: January 13, 2005
    Applicant: Bromine Compounds Ltd.
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Publication number: 20020024042
    Abstract: Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized—sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
    Type: Application
    Filed: June 11, 2001
    Publication date: February 28, 2002
    Inventors: Gad Friedman, Emanuel Buchbinder, Nurit Kornberg
  • Patent number: 5785943
    Abstract: Hydrogen peroxide is produced by a process which uses solid, insoluble, supported anthraquinone as catalyst. The supported anthraquinone is converted to supported anthrahydroquinone utilizing soluble reducing agentsor by hydrogenation with a hydrogen-donating organic substrate such as an alcohol, followed by reaction with oxygen, to regenerate anthraquinone and to form hydrogen peroxide, which can be solvent extracted from the solid catalyst.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: July 28, 1998
    Inventors: James E. Guillet, Gad Friedman
  • Patent number: 5624543
    Abstract: Hydrogen peroxide is produced by a process which uses as catalyst a polymer which has anthraquinone/anthrahydroquinone groups attached to it, and which exhibits differential solubility in water. The polymer is water soluble under one set of conditions, e.g. temperature range, but insoluble under another set of such conditions. Accordingly, the polymer bound anthrahydroquinone groups are oxidized in aqueous solution to form anthraquinone groups and hydrogen peroxide, which dissolves in the aqueous medium. Then the conditions, e.g. temperature, are changed to precipitate the polymer, which can readily be separated off, ready for re-use.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: April 29, 1997
    Assignee: Peroxco Incorporated
    Inventors: James E. Guillet, Kevin C. Kohler, Gad Friedman
  • Patent number: 5374339
    Abstract: Hydrogen peroxide is produced by a process which uses solid, insoluble, supported anthraquinone as catalyst. The catalyst is reduced to supported anthrahydroquinone using a hydrogen-donating organic substrate such as an alcohol, followed by reaction with oxygen, suitably photochemical reaction, to regenerate anthraquinone and to form hydrogen peroxide, which can be solvent extracted from the solid catalyst.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 20, 1994
    Inventors: James E. Guillet, Gad Friedman
  • Patent number: 4043978
    Abstract: A process for the production of novel polyimide polymers and copolymers which comprises reacting a cyclooctadiene-1,2,5,6-tetracarboxylic acid bisanhydride, or a derivative of same, with an amine, or mixture of amines, of the formula H.sub.2 N--A--NH.sub.2 wherein A designates an aliphatic, an aromatic, an araliphatic or a heterocyclic group, which may be substituted. Novel polyimides obtained by such process.
    Type: Grant
    Filed: March 20, 1974
    Date of Patent: August 23, 1977
    Assignee: Yeda Research & Development Co., Ltd.
    Inventors: Gerhard Martin Julius Schmidt, deceased, Michael Dror, Gad Friedman, Harold H. Levine