Inventor · disambiguated record
Keiji Moroishi
Also filed as: MOROISHI KEIJI
11 granted patents·1 pending application·451 citations·filing 1989–2006
93Inventor score
Files withHOYA CORP8HOYA CORP HOYA MAGNETICS SINGA1HOYA MAGNETICS SINGAPORE PTE1MASUMOTO TSUYOSHI1WD MEDIA SINGAPORE PTE LTD1
Top patents by PatentIndex Score
12 records- 0196US6916558B2Magnetic disk using a glass substrateHOYA MAGNETICS SINGAPORE PTE·Filed 2004·Granted Jul 12, 2005·76 cites·4 claims
- 0296US6759138B2Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layerHOYA CORP·Filed 2002·Granted Jul 6, 2004·94 cites·12 claims
- 0392US7993497B2Magnetic disk and magnetic disk manufacturing methodWD MEDIA SINGAPORE PTE LTD·Filed 2006·Granted Aug 9, 2011·69 cites·9 claims
- 0490US6287429B1Magnetic recording medium having an improved magnetic characteristicHOYA CORP·Filed 1999·Granted Sep 11, 2001·87 cites·4 claims
- 0587US5900324AMagnetic recording media, methods for producing the same and magnetic recordersHOYA CORP·Filed 1995·Granted May 4, 1999·50 cites·46 claims
- 0676US5968679AMagnetic recording medium and method of manufacturing the sameHOYA CORP·Filed 1996·Granted Oct 19, 1999·29 cites·27 claims
- 0760US5954927AMethod of manufacturing magnetic recording mediumHOYA CORP·Filed 1997·Granted Sep 21, 1999·12 cites·1 claims
- 0850US5824427AMagnetic recording media and methods for producing the sameHOYA CORP·Filed 1996·Granted Oct 20, 1998·9 cites·9 claims
- 0947US5766727AMagnetic recording medium and method for manufacturing the sameHOYA CORP·Filed 1996·Granted Jun 16, 1998·11 cites·14 claims
- 1046US5746893AMethod of manufacturing magnetic recording mediumHOYA CORP·Filed 1995·Granted May 5, 1998·6 cites·19 claims
- 1142US5100869AProcess for producing metal oxide-type superconductive materialMASUMOTO TSUYOSHI·Filed 1989·Granted Mar 31, 1992·8 cites·5 claims
- 1241US2004213949A1Magnetic disk and method of producing the sameHOYA CORP HOYA MAGNETICS SINGA·Filed 2004·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Keiji Moroishi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →