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Patent applications and USPTO patent grants for Katsuyama; Yoshiaki.The latest application filed is for "grooved magnetic substrates and method for producing the same".
Patent | Date |
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Grooved magnetic substrates and method for producing the same Grant 4,875,987 - Wada , et al. October 24, 1 | 1989-10-24 |
Magnetic head sliders, materials therefor, and the process for the production thereof Grant 4,859,638 - Wada , et al. August 22, 1 | 1989-08-22 |
Magnetic recording disc and process for producing the same Grant 4,808,455 - Wada , et al. * February 28, 1 | 1989-02-28 |
Recording disk substrate members and process for producing same Grant 4,690,846 - Wada , et al. September 1, 1 | 1987-09-01 |
Substrate members for recording disks and process for producing same Grant 4,659,606 - Wada , et al. * April 21, 1 | 1987-04-21 |
Composite substrate for a thin-film magnetic head Grant 4,608,293 - Wada , et al. August 26, 1 | 1986-08-26 |
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