Patents by Inventor Joël Steiner

Joël Steiner 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).

  • Material based on crosslinked silicone polymer comprising an immobilized photoinitiator, process for the preparation thereof, hydrophilic polymeric product obtained from this material and process for the preparation thereof, and novel photoinitiators
    Publication number: 20010007880
    Abstract: This invention pertains to a process for the manufacture of a hydrophilic polymeric product, consisting in causing a material comprising a crosslinked silicone polymer matrix and photoinitiator groups dispersed and immobilized within the polymer matrix to swell in a swelling solution comprising a solvent for swelling the crosslinked silicone polymer of the matrix of the material, a photopolymerizable hydrophilic monomer and optionally a crosslinking agent and a proton- or electron-donating coinitiator compound, when the material comprises photoactivable photoinitiator groups and does not comprise proton- or electron-donating coinitiator groups causing the photopolymerizable hydrophilic monomer to diffuse into the swollen material, and polymerizing, by irradiation, the photopolymerizable hydrophilic monomer.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 12, 2001
    Applicant: Essilor International Compagnie Generale D'Optique
    Inventors: Brigitte Marchin, Dominique Baude, Jean-Pierre Vairon, Marine-Anne Dourges, Philippe Chaumont, Joel Steiner
  • Material based on crosslinked silicone polymer comprising an attached photoinitiator, process for the preparation thereof, hydrophilic polymeric product obtained from this material and process for the preparation thereof, and novel photoinitiators
    Patent number: 6197842
    Abstract: This invention pertains to a process for the manufacture of a hydrophilic polymeric product, consisting in causing a material comprising a crosslinked silicone polymer matrix and photoinitiator groups dispersed and immobilized within the polymer matrix to swell in a swelling solution comprising a solvent for swelling the crosslinked silicone polymer of the matrix of the material, a photopolymerizable hydrophilic monomer and optionally a crosslinking agent and a proton- or electron-donating coinitiator compound, when the material comprises photoactivable photoinitiator groups and does not comprise proton- or electron-donating coinitiator groups causing the photopolymerizable hydrophilic monomer to diffuse into the swollen material, and polymerizing, by irradiation, the photopolymerizable hydrophilic monomer.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 6, 2001
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Brigitte Marchin, Dominique Baude, Jean-Pierre Vairon, Marine-Anne Dourges, Philippe Chaumont, Joël Steiner