Patents by Inventor Claudio Gervasutti

Claudio Gervasutti 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 the preparation of 1,2-difluoro-ethylene and 1-chloro-1,2-difluoro-ethylene
    Patent number: 5118888
    Abstract: Process for the preparation of 1,2-difluoro-ethylene and 1-chloro-1,2-difluoroethylene by catalytic hydrogenation of 1,2-dichloro-difluoro-ethylene.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: June 2, 1992
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Gervasutti, Giorgio Guglielmo, Luigi Marangoni
  • Process for the preparation of perfluorosuccinylfluoride
    Patent number: 5093523
    Abstract: A perfluorosuccinylfluoride is prepared by the reaction of a gaseous mixture of 1,4-dibromoperfluorobutane with SO.sub.3 in oleum with at least 65% of free SO.sub.3 containing a catalyst comprising, besides mono- and bi-valent mercury sulphates, B.sub.2 O.sub.3 in quantities of from 0.3% to 8% by weight with respect to the free SO.sub.3 present in the "oleum" during course of the reaction.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 3, 1992
    Assignee: Ausimont S.r.l.
    Inventor: Claudio Gervasutti
  • Process for preparing 1,2-difluoroethane and 1,1,2-trifluoroethane
    Patent number: 5059729
    Abstract: A process for preparing 1,2-difluoroethane or 1,1,2-trifluoroethane by hydrogenation of 1,2-dichlorodifluoroethylene or 1-chlorotrifluoroethylene in the presence of a hydrogenation catalyst. The process is conducted in the gas phase at a temperature ranging from 100.degree. C. to 220.degree. C., the molar ratios between H.sub.2 and olefin being higher than 3.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: October 22, 1991
    Assignee: Ausimont S.r.l.
    Inventor: Claudio Gervasutti
  • Process for preparing perfluoro-(2-bromoethyl-vinyl-ether)
    Patent number: 4937391
    Abstract: Preparing perfluoro-(2-bromoethyl-vinyl-ether)CBrF.sub.2 --CF.sub.2 --O--CF.dbd.CF.sub.2by the dechlorination of 2-bromo-1',2'-dichloro-perfluorodiethyl-etherCBrF.sub.2 --CF.sub.2 --O--CClF--CClF.sub.2in the presence of copper and a solvent constituted by an aliphatic amide of the formula ##STR1## wherein R.sub.1 and R.sub.2 are either H or (C.sub.1 -C.sub.2)-alkyl groups andR.sub.3 is a (C.sub.1 -C.sub.2)-alkyl group,at temperatures within the range of from 100.degree. up to 160.degree. C.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: June 26, 1990
    Assignee: Ausimont S.r.l.
    Inventor: Claudio Gervasutti
  • Process for preparing fluoroethylenes and chlorofluoro-ethylenes from chlorofluoroethanes
    Patent number: 4876405
    Abstract: A process for preparing fluoroethylenes and chlorofluoroethylenes starting from chlorofluoroethanes and hydrogen, carried out in gas phase at a temperature ranging from 150.degree. to 600.degree. C., in the presence of a hydrogenation catalyst, wherein the chlorofluoroethanes have at least one chlorine atom on each carbon atom, and the catalyst is selected preferably from palladium, nickel, chromium, cobalt, platinum, copper and mixtures thereof, and it is utilized either as such or inert materials.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: October 24, 1989
    Assignee: Ausimont S.p.A.
    Inventor: Claudio Gervasutti
  • Process for the preparation of hydrofluoroalkanes
    Patent number: 4754085
    Abstract: Process for the preparation of hydro(halo)fluoroalkanes by direct fluorination in liquid phase with elemental fluorine at low temperature (under 0.degree. C.) of the corresponding hydro(halo)=alkenes.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: June 28, 1988
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Gervasutti, Lino Conte, Gian Paolo Gambaretto