Patents by Inventor Silvano Cadamuro

Silvano Cadamuro 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 to prepare alkyl-ureas from O,S-dimethyl dithiocarbonate
    Patent number: 6723875
    Abstract: The present invention relates to the preparation of alkyl-ureas, starting from O,S-dimethyl dithiocarbonate, which provides the following steps: A) causing the O,S-dimethyl dithiocarbonate to react with a primary amine of general formula R1NH2 in order to obtain an O-methyl thiocarbamate; B) isomerising the O-methyl thiocarbamate in order to obtain an S-methyl thiocarbamate; C) causing the S-methyl thiocarbamate with a compound of general formula R′R″NH, wherein R′ and R″ may be equal or different one in respect of the other and of R1 and may be H, R2 or R3, in order to obtain one of the alkyl-ureas of formula (4), (5) or (6).
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: April 20, 2004
    Assignee: Oxon Italia S.p.A.
    Inventors: Edoardo Pallucca, Jacopo Degani, Anna Maria Serri, Rita Fochi, Sonia Gazzetto, Claudia Fenoglio, Claudio Ornati, Mara Migliaccio, Silvano Cadamuro, Gianni Carvoli