Patents by Inventor Claude Bussac

Claude Bussac 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).

  • Method for making a multitrack head
    Patent number: 5093980
    Abstract: A method of making a multitrack head consisting in making a first network of grooves in a block of ferrite, filling the grooves with glass, planing down the surface, making a second network of grooves in a second block of ferrite, bonding these two blocks, trueing the base of the first block, depositing poles and making the winding wires go through.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: March 10, 1992
    Assignee: Thomson-CSF
    Inventors: Francois Maurice, Jean-Marc Coutellier, Maurice Penot, Claude Bussac, Paul-Louis Meunier
  • Method for the fabrication of a magnetic recording/reading head from a magnetic substrate
    Patent number: 4939836
    Abstract: A method for fabricating magnetic recording/reading heads. A substrate made of magnetic material is provided with a groove of a predetermined width. The surface of the substrate bearing the groove becomes the active face for the magnetic head. The face of the substrate having the groove is ground, and then filled with a non-magnetic material to form a gap. The filling causes the non-magnetic material to jut out of the groove. The material which juts out is ground off until the level of the substance is reached.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: July 10, 1990
    Assignee: Compagnie Europeenne de Composants Electroniques LCC
    Inventors: Paul-Louis Meunier, Alain Penot, Jean-Marc Coutellier, Claude Bussac