Inventor · disambiguated record
Jun Fumioka
Also filed as: FUMIOKA JUN
7 granted patents·203 citations·filing 1986–1997
88Inventor score
Files withHITACHI LTD7
Top patents by PatentIndex Score
7 records- 0192US5815343AMagnetic recording medium, process for producing the same and magnetic recording systemHITACHI LTD·Filed 1997·Granted Sep 29, 1998·77 cites·62 claims
- 0290US5750230AMagnetic recording media and magnetic recording system using the sameHITACHI LTD·Filed 1993·Granted May 12, 1998·44 cites·27 claims
- 0375US6057021AMagnetic recording media and magnetic recording system using the sameHITACHI LTD·Filed 1997·Granted May 2, 2000·42 cites·7 claims
- 0469US4762534AMethod of producing magnetic diskHITACHI LTD·Filed 1986·Granted Aug 9, 1988·17 cites·17 claims
- 0567US4842618AMethod of producing magnetic diskHITACHI LTD·Filed 1988·Granted Jun 27, 1989·10 cites·5 claims
- 0654US5028242ALapping member and lapping tapeHITACHI LTD·Filed 1989·Granted Jul 2, 1991·9 cites·11 claims
- 0737US5123933AMethod of producing magnetic diskHITACHI LTD·Filed 1990·Granted Jun 23, 1992·4 cites·10 claims
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