Patents by Inventor Giampaolo Chieffi

Giampaolo Chieffi 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).

  • Rubber compound for portions of pneumatic tyres
    Patent number: 11555102
    Abstract: A rubber compound for the preparation of portions of pneumatic tyres comprising a cross-linking unsaturated chain polymer base, a filler system and a vulcanization system. The filler system comprises (a) a first carbon black having a surface area less than or equal to 170 m2/gr in a quantity greater than or equal to 25 phr; (b) a second carbon black having a surface area greater than or equal to 250 m2/gr in a quantity such that the ratio between the quantity of the first carbon black and the quantity of the second carbon black is greater than or equal to 3 and less than or equal to 10; (c) a carbon black dispersing agent in a quantity of less than or equal to 1 phr.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: January 17, 2023
    Assignee: Bridgestone Europe NV/SA
    Inventors: Davide Privitera, Giampaolo Chieffi, Raffaele Di Ronza
  • Rubber Compound For Portions Of Pneumatic Tyres
    Publication number: 20200277472
    Abstract: A rubber compound for the preparation of portions of pneumatic tyres comprising a cross-linking unsaturated chain polymer base, a filler system and a vulcanization system. The filler system comprises (a) a first carbon black having a surface area less than or equal to 170 m2/gr in a quantity greater than or equal to 25 phr; (b) a second carbon black having a surface area greater than or equal to 250 m2/gr in a quantity such that the ratio between the quantity of the first carbon black and the quantity of the second carbon black is greater than or equal to 3 and less than or equal to 10; (c) a carbon black dispersing agent in a quantity of less than or equal to 1 phr.
    Type: Application
    Filed: November 19, 2018
    Publication date: September 3, 2020
    Inventors: Davide Privitera, Giampaolo Chieffi, Raffaele Di Ronza