Patents by Inventor Patrick Langlade

Patrick Langlade 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).

  • Composite material for magnetooptic recording its preparation and its use
    Patent number: 6017645
    Abstract: Composite material for magnetooptic recording, comprising a thin layer deposited on a non-magnetic solid substrate. The said thin layer is a polycrystalline layer consisting of microcrystals having a structure of a vacant-site spinel ferrite, based on iron, cobalt and transition metals. By virtue of a particular process for producing the thin layers, enabling especially the size of the crystallites to be increased, it is possible to optimize the magnetic and magnetooptic properties and to obtain thin layers having, for example, a remanent Faraday rotation and a coercive field which are greater, respectively, than 1 degree per micron for the Faraday rotation and 1000 Oe for the coercive field.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 25, 2000
    Assignee: ATG-Cygnet
    Inventors: Philippe Tailhades, Jean-Pierre Bonino, Isabelle Pasquet, Lionel Presmanes, Laurence Bouet, Abel Rousset, Patrick Langlade
  • Composite material for magnetooptic recording its preparation and its use
    Patent number: 5731049
    Abstract: Composite material for magnetooptic recording, comprising a thin layer deposited on a non-magnetic solid substrate. The said thin layer is a polycrystalline layer consisting of microcrystals having a structure of a vacant-site spinel ferrite, based on iron, cobalt and transition metals. By virtue of a particular process for producing the thin layers, enabling especially the size of the crystallites to be increased, it is possible to optimize the magnetic and magnetooptic properties and to obtain thin layers having, for example, a remanent Faraday rotation and a coercive field which are greater, respectively, than 1 degree per micron for the Faraday rotation and 1000 Oe for the coercive field.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: March 24, 1998
    Assignee: ATG-Cygnet
    Inventors: Philippe Tailhades, Jean-Pierre Bonino, Isabelle Pasquet, Lionel Presmanes, Laurence Bouet, Abel Rousset, Patrick Langlade