Patents by Inventor Jean-Noel Jas

Jean-Noel Jas 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).

  • Preparation of precipitated silicas useful as fillers in silicon matrices
    Patent number: 11975978
    Abstract: The invention relates to the use of carboxylic acid during the preparation of precipitated silica or a suspension of precipitated silica and to the precipitated silicas thus obtained, particularly with low water uptake, which can be used, for example, as a reinforcing filler in silicon matrices.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: May 7, 2024
    Assignee: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline De Cayeux
  • PREPARATION OF PRECIPITATED SILICAS USEFUL AS FILLERS IN SILICON MATRICES
    Publication number: 20210309530
    Abstract: The invention relates to the use of carboxylic acid during the preparation of precipitated silica or a suspension of precipitated silica and to the precipitated silicas thus obtained, particularly with low water uptake, which can be used, for example, as a reinforcing filler in silicon matrices.
    Type: Application
    Filed: June 11, 2021
    Publication date: October 7, 2021
    Applicant: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline Daudey
  • Preparation of precipitated silicas useful as fillers in silicon matrices
    Publication number: 20090214449
    Abstract: Carboxylic acids are employed during the preparation of precipitated silica or a suspension of precipitated silica to provide precipitated silicas with low water uptake, which are useful, for example, as reinforcing fillers for silicon matrices.
    Type: Application
    Filed: May 29, 2006
    Publication date: August 27, 2009
    Applicant: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline Daudey
  • Doped precipitate silica suspensions with low-particle-size distribution and their use a paper filler
    Publication number: 20040079504
    Abstract: The invention concerns a precipitate silica suspension, said silica containing, bound to its surface at least a metal element at least divalent. The invention is characterised in that the silica particles have a median diameter in volume less than 2 &mgr;m. The invention further concerns the use of said suspension as paper filler and more particularly for enhancing printing properties.
    Type: Application
    Filed: December 2, 2003
    Publication date: April 29, 2004
    Inventors: Marie-Odile Lafon, Christophe Eychenne-Baron, Jean-Noel Jas
  • Process for improving the rheological properties of a suspension of precipitated silica
    Patent number: 4537699
    Abstract: The present invention provides a process for improving the rheological properties of a suspension of precipitated silica by the addition of an aluminum compound, thereby producing a sprayable suspension or slurry with a pH of greater than 3.5, a solids content of at least about 15% by weight, which may be spray dried to form silica in either powder or microbead form. In a preferred embodiment, the aluminum compound added to the suspension is in the form of sodium aluminate.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: August 27, 1985
    Assignee: Rhone-Poulenc Specialites Chimiques "Les Miroirs"
    Inventor: Jean-Noel Jas