Patents by Inventor Fabio Costanzi

Fabio Costanzi 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).

  • Covulacanizable compositions of fluorelastomers having an improved chemical stability
    Patent number: 5177148
    Abstract: Covulcanizable compositions comprising (A) 55-100% by weight of an elastomeric copolymer of vinylidene fluoride with perfluoropropene optionally tetrafluoroethylene and containing from 0.001 to 2% by weight of bromine; (B) 0-45% by weight of a tetrafluoroethylene and propylene copolymer; (C) 0.7-2.5 parts for 100 parts of mix (A)+(B) of a bisphenol compound; (D) 0.3-1.5 parts for 100 parts of mix (A)+(B) of an organic guaternary compound of ammonium, phosphonium or aminophosphonium; (E) 0.4-5 parts for 100 parts of mix (A)+(B) of an organic peroxide; (F) 1-5% by weight of (A)+(B) of a peroxide cross-linking coagent.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: January 5, 1993
    Assignee: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Giulio Tommasi, Giulio Brinati, Gianna Cirillo, Fabio Costanzi
  • Co-vulcanizable compositions of fluoroelastomers having improved chemical stability
    Patent number: 4831083
    Abstract: Co-vulcanizable compositions comprising (A) 55-85% by weight of a fluoroelastomeric copolymer of vinylidene fluoride with perfluoropropene and possibly tetrafluoroethylene; (B) 45-15% by weight of a copolymer of tetrafluoroethylene and propylene; (C) 0.7-2.5 parts, per 100 parts of the (A)+(B) blend, of a bisphenolic compound; (D) 0.3-1.5 parts, per 100 parts of the (A)+(B) blend, of a quaternary ammonium, phosphonium or aminophosphonium organic compound; (E) 0.4-5 parts, per 100 parts of the (A)+(B) blend, of an organic peroxide; (F) 1-5% by weight, as referred to (A)+(B), of a peroxidic cross-linking coagent.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: May 16, 1989
    Assignee: Ausimont S.r.l.
    Inventors: Sergio Geri, Fabio Costanzi, Cirillo: Gianna, Giovanni Moggi