Patents by Inventor David Ioffe

David Ioffe 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).

  • Pentabromobenzyl alkyl ethers and their use as fire retardants
    Patent number: 7091270
    Abstract: The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.
    Type: Grant
    Filed: January 23, 2000
    Date of Patent: August 15, 2006
    Assignee: Bromine Compounds Ltd.
    Inventors: Joseph Zilberman, Alon Tavor, Dorit Canfi, David Ioffe, Grigory Titelman, Samuel Bron, Olga Weinberg
  • Process for preparing famciclovir
    Publication number: 20050143400
    Abstract: The invention provides a process for making famciclovir, comprising reacting 9-[4-acetoxy-3-(acetoxymethyl)but-1-yl]-2-amino-6-chloropurine (Cl-FMC) with a palladium on charcoal catalyst in water and ammonium formate. The invention also provides methods of treating viral diseases by administering the famciclovir prepared according to the above process.
    Type: Application
    Filed: September 2, 2004
    Publication date: June 30, 2005
    Inventors: Genny Shamai, Shlomo Antebi, David Ioffe, Ben-Zion Dolitzky, Batia Kauffmann
  • Pentabromobenzyl alkyl ethers and their use as fire retardants
    Publication number: 20050124746
    Abstract: The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.
    Type: Application
    Filed: January 23, 2003
    Publication date: June 9, 2005
    Applicant: Bromine Compounds Ltd.
    Inventors: Joseph Zilberman, Alon Tavor, Dorit Canfi, David Ioffe, Grigory Titelman, Samuel Bron, Olga Weinberg
  • Process for the preparation of famciclovir
    Publication number: 20040266795
    Abstract: The invention provides processes for making famciclovir with low levels of undesirable by-products. The present invention discloses a process comprises reacting a compound of formula I (acetic acid 2-acetoxymethyl-4-(5-amino-7-chloro-imidazo[4,5-b]pyridin-3-yl)-butyl ester) in the presence of a palladium on charcoal catalyst in a C1-C6 alkyl acetate and ammonium formate. The present invention further discloses a process comprises reacting a compound of formula I (acetic acid 2-acetoxymethyl-4-(5-amino-7-chloro-imidazo[4,5-b]pyridin-3-yl)-butyl ester) in the presence of a palladium on charcoal catalyst in a mixture of a C1-C6 alkyl acetate, a C1-C4 alcohol and ammonium formate.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 30, 2004
    Inventors: Genny Shamai, Shlomo Antebi, David Ioffe, Ben-Zion Dolitzky, Batia Kauffmann