Patents by Inventor Danielle Roze

Danielle Roze 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).

  • Process for coating a magnetic disk
    Patent number: 5030480
    Abstract: A process for depositing a lubricating coating on the silicon oxide protective layer of a magnetic disk, wherein after having cleaned the disk, the sequence for coating the surface of the disk includes the steps of: setting the magnetic disk into rotation; spraying onto the protective layer of the disk, in the direction of rotation, a lubricant containing carrier gases, solvents, and active oxyhydrocarbon monomeric elements that are polymerized and then adsorbed to the protective layer; spraying a solvent on the disk in the direction of rotation; and wiping the disk. The invention is applicable to a variety of disk structures, including magnetooptical disks.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: July 9, 1991
    Assignee: Bull S.A.
    Inventors: Danielle Roze, Pierre Bernstein
  • Method for overcoming aging of a magnetooptical recording medium
    Patent number: 4868010
    Abstract: A method for overcoming aging of a magnetooptical recording medium (MEMOI) including at least one magnetic layer (CMI) covered by a layer of alumina (DIELI.sub.2) that is transparent to light. In order to improve the resistance to magnetic aging of the magnetooptical recording medium (MEMOI), this medium is subjected to annealing at a temperature in the vicinity of 200.degree. C., immediately after the medium is being deposited in a vacuum at ambient temperature. The invention is applicable to magnetooptical disk memories.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: September 19, 1989
    Assignee: Bull S.A.
    Inventors: Danielle Roze, Marie-Monique Coirre, Francois Rio, Pierre Bernstein