Inventor · disambiguated record
Hiroaki Doushita
Also filed as: DOUSHITA HIROAKI
21 granted patents·7 pending applications·201 citations·filing 1990–2008
95Inventor score
Top patents by PatentIndex Score
28 records- 0183US7041398B2Magnetic recording medium and magnetic recording and reproducing method using the sameFUJI PHOTO FILM CO LTD·Filed 2005·Granted May 9, 2006·5 cites·14 claims
- 0282US7129019B2Optical information recording mediumFUJI PHOTO FILM CO LTD·Filed 2002·Granted Oct 31, 2006·17 cites·9 claims
- 0376US6641891B2Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2002·Granted Nov 4, 2003·11 cites·19 claims
- 0476US5512350AMagnetic recording medium having a magnetic layer with a specified surface roughness and which contains ferromagnetic powder, binder, and an abrasiveFUJI PHOTO FILM CO LTD·Filed 1995·Granted Apr 30, 1996·36 cites·5 claims
- 0575US6579592B1Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensityFUJI PHOTO FILM CO LTD·Filed 1999·Granted Jun 17, 2003·26 cites·30 claims
- 0672US5479311AMagnetic tape cassette having improved magnetic tape substrate and tape guide for reducing electrostatic chargingFUJI PHOTO FILM CO LTD·Filed 1994·Granted Dec 26, 1995·20 cites·7 claims
- 0771US6805942B2Magnetic recording tapeFUJI PHOTO FILM CO LTD·Filed 2003·Granted Oct 19, 2004·8 cites·14 claims
- 0871US6645648B2Magnetic recording medium comprising a backcoat layer having specific protrusionsFUJI PHOTO FILM CO LTD·Filed 2001·Granted Nov 11, 2003·9 cites·6 claims
- 0965US6818277B2Magnetic recording medium and reproduction process using the sameFUJI PHOTO FILM CO LTD·Filed 2003·Granted Nov 16, 2004·5 cites·20 claims
- 1064US6767612B2Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2002·Granted Jul 27, 2004·5 cites·11 claims
- 1161US6291052B1Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1998·Granted Sep 18, 2001·15 cites·46 claims
- 1259US6703107B2Magnetic tapeFUJI PHOTO FILM CO LTD·Filed 2002·Granted Mar 9, 2004·3 cites·9 claims
- 1358US6316077B1Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1999·Granted Nov 13, 2001·12 cites·8 claims
- 1453US5096774AMagnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified rangeFUJI PHOTO FILM CO LTD·Filed 1990·Granted Mar 17, 1992·9 cites·13 claims
- 1552US2009087689A1Magnetic recording mediumDOUSHITA HIROAKI·Filed 2008·Application pending·0 cites
- 1650US6936338B2Magnetic recording tapeFUJI PHOTO FILM CO LTD·Filed 2003·Granted Aug 30, 2005·1 cites·14 claims
- 1750US6713171B2Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2002·Granted Mar 30, 2004·1 cites·9 claims
- 1849US5322733AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1991·Granted Jun 21, 1994·7 cites·7 claims
- 1945US6835445B2Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2003·Granted Dec 28, 2004·0 cites·15 claims
- 2045US2006067000A1Magnetic tape cartridgeFUJI PHOTO FILM CO LTD·Filed 2005·Application pending·0 cites
- 2144US2005213247A1Leader tape and magnetic tape cartridge using the sameFUJI PHOTO FILM CO LTD·Filed 2005·Application pending·0 cites
- 2241US5503943AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1994·Granted Apr 2, 1996·4 cites·4 claims
- 2341US2006008680A1Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2005·Application pending·0 cites
- 2440US5093191AMagnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified rangeFUJI PHOTO FILM CO LTD·Filed 1990·Granted Mar 3, 1992·4 cites·12 claims
- 2538US2003157372A1Magnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 2002·Application pending·0 cites
- 2638US2002028352A1Magnetic Recording MediumFiled 2001·Application pending·0 cites
- 2737US6037051AMagnetic tapeFUJI PHOTO FILM CO LTD·Filed 1998·Granted Mar 14, 2000·3 cites·20 claims
- 2836US2001055699A1Magnetic recording mediumFiled 2001·Application pending·0 cites
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