Patents Represented by Attorney Austin R. Miller, Esq.

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  • Method for storing a polyester film for a magnetic recording medium, and a method for producing a magnetic recording medium
    Patent number: 6117483
    Abstract: A method for storing a polyester film for a magnetic recording medium, characterized in that a polyester film for a magnetic recording medium with a surface roughness Ra of 6 nm or less on the surface A on one side is stored substantially in a storing atmosphere having a storing temperature kept in a range from 10.degree. C. to 35.degree. C. The polyester film stored according to this storing method is used as a base film for producing magnetic tapes.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: September 12, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Masaaki Ono, Katsuya Okamoto, Tadashi Harada
  • Method of producing extra-low iron loss grain oriented silicon steel sheets
    Patent number: 4985635
    Abstract: An extra-low iron loss grain oriented silicon steel sheet is produced by irradiating electron beam to an insulation coating formed on a grain oriented silicon steel sheet after finish annealing in a direction crossing the rolling direction of the sheet, whereby the magnetic properties are not degraded even if the steel sheet is subjected to a strain relief annealing. If necessary, an inert gas may be introduced into the vicinity of electron beam irradiated zone of the coating.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: January 15, 1991
    Assignee: Kawasaki Steel Corporation
    Inventors: Yukio Inokuti, Yoh Ito