Patents by Inventor Adriana Tasca

Adriana Tasca 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 regulated molecular weight perfluoro-polyethers having neutral and functional end groups
    Patent number: 4788257
    Abstract: A process for the dissociation of high molecular weight perfluoropolyethers to obtain low molecular weight perfluoropolyethers which comprises treating a perfluoropolyether with 0.1-10% by weight of a catalyst consisting of Ti, Cr, Mn, Fe, Co, Ni, V, Cu, Mo, Sn, Sb, Zr, Zn oxides at temperatures comprised between 150.degree. and 380.degree. C.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: November 29, 1988
    Assignee: Montedison S.p.A.
    Inventors: Gerardo Caporiccio, Gian T. Viola, Giuseppe Marchionni, Pio De Iorio, Adriana Tasca
  • Use of perfluoropolyethers in mechanical pumps
    Patent number: 4753744
    Abstract: A process for the generation of vacuums .ltoreq.5.10.sup.-4 torr by means of mechanical pumps, comprising using as operative fluid a perfluoropolyether having neutral end groups and containing light products, having an average molecular weight equal to or lower than 1,000, in amounts lower than or equal to 50 ppm.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: June 28, 1988
    Assignee: Ausimont S.p.A.
    Inventors: Enzo Calloni, Adriana Tasca, Luigi Stoppa