Patents by Inventor Romuald Paviet

Romuald Paviet 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).

  • Laser beam optical recording medium featuring several read/write levels
    Patent number: 6746746
    Abstract: The inventions relates to a laser beam optical recording medium which features several read/write levels, comprising a first half-transparent level and at least a second level, the first one being close to the laser transmitting source, each level comprising a phase changing material layer with two stable states controlled by a laser beam, where the phase changing material is a metallic alloy whose chemical formula writes as: [(GeyTe1-y)a(SbzTe1-z)1-a]1-b(In1-xTex)b with: 0.4≦y≦0.6 0.3≦z≦0.5 0.4≦x≦0.6 0.3≦a≦0.5 0.01≦b≦0.3 the reflection coefficient of the first level being in the range from 10% to 30%, the transmission coefficient being at least 45%, the writing power being lower than 23 mW and the erasing power being lower than 10 mW.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: June 8, 2004
    Assignees: Commissariat a l'Energie Atomique, MPO International
    Inventors: Bernard Bechevet, Romuald Paviet, Robin Perrier, Jean-Michel Bruneau
  • Laser beam optical recording medium featuring several read/write levels
    Publication number: 20020119278
    Abstract: The inventions relates to a laser beam optical recording medium which features several read/write levels, comprising a first half-transparent level and at least a second level, the first one being close to the laser transmitting source, each level comprising a phase changing material layer with two stable states controlled by a laser beam, where the phase changing material is a metallic alloy whose chemical formula writes as
    Type: Application
    Filed: December 18, 2001
    Publication date: August 29, 2002
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Bernard Bechevet, Romuald Paviet, Robin Perrier, Jean-Michel Bruneau