Patents by Inventor Iren Fellegvari

Iren Fellegvari 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 preparing a naphtalenamine derivative
    Patent number: 6034274
    Abstract: The present invention relates to a proccss for preparing cis-(1S)-N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphtalenami ne and its acid addition salts wherein N-methyl-[4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-naphtalene-1-en]-amine -N-oxide is hydrogenated in an inert solvent in the presence of a catalyst, then the resulting mixture is treated with alcanolic solution of a mineral acid, the resulting cis-racemic acid addition salt is converted to the free base by known methods, resolved and the resulting cis-(+)-base of formula (II) is converted to an acid addition salt. N-methyl-[4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-naphtalene-1-en]amine- N-oxide is also disclosed.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: March 7, 2000
    Assignee: Richter Gedeon
    Inventors: Krisztina Vukics, Tamas Fodor, Janos Fischer, Iren Fellegvari, Sandor Levai
  • Oligodeoxynucleotides containing 5-alkyl, 5-(1-alkenyl)- and 5-(1-alkynl) pyrimidines
    Patent number: 5767264
    Abstract: A 12 to 30 nucleotide-unit long oligonucleotide that comprises at least one 5-substituted uracil or cytosine, where the 5-substituent is a C.sub.3-6 n-alkyl, a vinyl, a butenyl, an ethynyl, or a C.sub.4-12 n-1-alkynyl, with the proviso that the uracil moiety may not be substituted with an n-alkyl or a C.sub.8-12 n-1-alkynyl.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: June 16, 1998
    Assignee: MTA Zozponti Kemiai Kutato Intezet
    Inventors: Laszlo Otvos, Janos Sagi, Attila Szemzo, Gyula Sagi, Ottone Szabolcs, Eva Ruff, Katalin Ebinger, Ferencne Tudos, Iren Fellegvari