Patents by Inventor Charles A. R. Magallon

Charles A. R. Magallon 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).

  • Magnetic recording materials having great resistance to wear and tear
    Patent number: 3987232
    Abstract: A magnetic recording element having greatly improved resistance to wear and tear is disclosed. This element includes in a magnetizable layer a carbonic acid ester lubricant such as ethyl cetyl carbonate, ethyl lauryl carbonate, didodecyl carbonate or phenyl cetyl carbonate. The lubricant can be present in an amount between 1 and 40% by weight of the binder, and advantageously about 20%. A typical binder is a copolymer of vinyl chloride with vinyl acetate, with or without polyurethane.
    Type: Grant
    Filed: March 15, 1973
    Date of Patent: October 19, 1976
    Assignee: Eastman Kodak Company
    Inventors: Albert P. Huguenard, Yves P. M. Etienne, Charles A. R. Magallon