Patents by Inventor Thomas M. Kanten

Thomas M. Kanten 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).

  • Cobalt-doped acicular hyper-magnetite particles
    Patent number: 4226909
    Abstract: Acicular hyper-magnetite particles, that is, acicular particles of(FeO).sub.x Fe.sub.2 O.sub.3where x is greater than one and not greater than 1.5, are provided with coatings of a cobalt compound, the cobalt providing 1% to 10% of the total weight of the particles. The particles provide superior magnetic recording media.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: October 7, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas M. Kanten
  • Cobalt-doped acicular hyper-magnetite particles
    Patent number: 4137342
    Abstract: Acicular hyper-magnetite particles, that is, acicular particles of(FeO).sub.x Fe.sub.2 O.sub.3where x is greater than one and not greater than 1.5, are provided with coatings of a cobalt compound, the cobalt providing 1% to 10% of the total weight of the particles. The particles provide superior magnetic recording media.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: January 30, 1979
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Thomas M. Kanten
  • Fine-metal-particle-based magnetic recording medium of improved environmental stability
    Patent number: 4074012
    Abstract: Magnetic recording media having a magnetizable layer that comprises fine metal particles based on iron, cobalt, or nickel dispersed in a nonmagnetizable binder material have improved environmental stability because of the presence in the magnetizable layer of an organic compound that bears sterically unhindered aliphatic amine functionality.
    Type: Grant
    Filed: August 29, 1975
    Date of Patent: February 14, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Duane G. Heikkinen, Thomas M. Kanten