Patents by Inventor Valeria Regondi

Valeria Regondi 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 trithiocarbonic acid diesters
    Patent number: 4868322
    Abstract: A new process is described for the preparation of trithiocarbonic acid esters of formula: ##STR1## in which R and R.sub.1, which can be the same or different, are aliphatic, alicyclic, aromatic or heterocyclic radicals. The new process is characterized in that an organic hydrosulphide and a base, or an inorganic sulphide, are reacted with carbon disulphide and an organic halide in stoichiometric proportions in the absence of organic solvents, in the presence of an aqueous phase and a phase transfer catalyst.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: September 19, 1989
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Iacopo Degani, Rita Fochi, Valeria Regondi
  • Process for preparing alkyl-sulphonyl chlorides and arylalkyl-sulphonyl chlorides
    Patent number: 4743404
    Abstract: Process for preparing alkyl-sulphonyl chlorides and arylalkyl-sulphonyl chlorides of formula RSO.sub.2 Cl (R being alkyl or arylalkyl), starting from S,S-dialkyl or diarylalkyl dithiocarbonates RS--CO--SR, consisting in reacting the starting compound with gaseous chlorine in the presence of water, at 0.degree.-+10.degree. C.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: May 10, 1988
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Margherita Barbero, Iacopo Degani, Rita Fochi, Valeria Regondi
  • Process for preparing organic sulphides
    Patent number: 4449004
    Abstract: A process for preparing organic thioethers of formula R--S--R.sub.1 in which R is an aliphatic, aryl, arylaliphatic or heterocyclic radical and R.sub.1 is an aliphatic or arylaliphatic radical, from organic dithiocarbonates and organic halides or sulphonates, in the presence of an aqueous alkaline base and a phase transfer catalyst, at a temperature of between 50.degree. and 100.degree. C. for a time of 10-60 minutes.
    Type: Grant
    Filed: April 13, 1982
    Date of Patent: May 15, 1984
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Iacopo Degani, Rita Fochi, Valeria Regondi