Inventor · disambiguated record
Takayuki Nakakawaji
Also filed as: NAKAKAWAJI TAKAYUKI
26 granted patents·4 pending applications·267 citations·filing 1989–2016
96Inventor score
Top patents by PatentIndex Score
30 records- 0181US6816341B2Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine groupHITACHI LTD·Filed 2003·Granted Nov 9, 2004·13 cites·14 claims
- 0279US5157066AFluoroalkyl ether, surface modifying composition and method for modifying surfaceHITACHI LTD·Filed 1991·Granted Oct 20, 1992·27 cites·8 claims
- 0377US5204202AElectrophotographic photosensitive element comprising a protective layer with a porous surface impregnated with lubricantHITACHI LTD·Filed 1990·Granted Apr 20, 1993·24 cites·23 claims
- 0476US5835305AMagnetic disk apparatus employing liquid bearing type or physical contact type magnetic head sliderHITACHI LTD·Filed 1994·Granted Nov 10, 1998·24 cites·37 claims
- 0575US6605335B2Magnetic recording mediumHITACHI LTD·Filed 2001·Granted Aug 12, 2003·11 cites·6 claims
- 0673US5252418AElectrophotographic photoreceptor with protruding inorganic insulator pieces and an electrophotographic apparatus utilizing the sameHITACHI LTD·Filed 1990·Granted Oct 12, 1993·20 cites·25 claims
- 0769US5820964AMagnetic disk, and magnetic disk apparatusHITACHI LTD·Filed 1995·Granted Oct 13, 1998·22 cites·35 claims
- 0869US4990418AElectrophotographic photoreceptor and method of producing the sameHITACHI LTD·Filed 1989·Granted Feb 5, 1991·16 cites·12 claims
- 0968US5456980AAmmonium carboxylate lubricant and magnetic recording medium using the sameHITACHI LTD·Filed 1994·Granted Oct 10, 1995·17 cites·14 claims
- 1068US5219651AMagnetic recording apparatus comprising a magnetic recording medium and a magnetic head each coated with a coating of a binder and a specified fluorolubricantHITACHI LTD·Filed 1991·Granted Jun 15, 1993·20 cites·3 claims
- 1166US6555197B1Lubricant, magnetic disk and magnetic disk apparatusHITACHI LTD·Filed 2000·Granted Apr 29, 2003·5 cites·22 claims
- 1261US5073466AElectrophotographic member containing a fluorine-containing lubricating agent and process for producing the sameHITACHI LTD·Filed 1989·Granted Dec 17, 1991·12 cites·29 claims
- 1357US10155916B2Lubricant for gas insulated switchgear, and gas insulated switchgearHITACHI LTD·Filed 2016·Granted Dec 18, 2018·0 cites·4 claims
- 1455US6870704B2Magnetic disc apparatus and its fabricating methodHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Mar 22, 2005·2 cites·13 claims
- 1555US5549835AApparatus equipped with a cooling block unit having sliding parts and a compound used to the sameHITACHI LTD·Filed 1995·Granted Aug 27, 1996·15 cites·12 claims
- 1653US5536578AMagnetic recording medium comprising a protective layer and a layer of ammonium carboxylate fluorine-containing compoundHITACHI LTD·Filed 1995·Granted Jul 16, 1996·9 cites·14 claims
- 1752US6665147B2Magnetic disk drive with supply of perfluoropolyether as lubricantHITACHI LTD·Filed 2001·Granted Dec 16, 2003·1 cites·12 claims
- 1851US6917495B2Magnetic disk driveHITACHI LTD·Filed 2003·Granted Jul 12, 2005·1 cites·3 claims
- 1950US7820114B2Reaction container for chemical analysis with the controlled surface propertyHITACHI LTD·Filed 2004·Granted Oct 26, 2010·0 cites·6 claims
- 2047US6323163B1Fluorocompound, lubricant, surface modifier, lubricating film, magnetic recording medium, and magnetic recording deviceHITACHI LTD·Filed 1997·Granted Nov 27, 2001·10 cites·29 claims
- 2145US6296917B1Magnetic disk and magnetic recording/reproduction apparatusHITACHI LTD·Filed 1995·Granted Oct 2, 2001·7 cites·15 claims
- 2244US6869536B2Lubricant, magnetic disk and magnetic disk apparatusHITACHI LTD·Filed 2003·Granted Mar 22, 2005·0 cites·13 claims
- 2342US2005095461A1Hard disk driveFiled 2004·Application pending·0 cites
- 2441US2004096675A1Magnetic recording mediumHITACHI LTD·Filed 2003·Application pending·0 cites
- 2541US2007270085A1Chemical mechanical polishing slurry, cmp process and electronic device processOTA RYO·Filed 2007·Application pending·0 cites
- 2640US5985403AMagnetic recording medium and magnetic recording reproducerHITACHI LTD·Filed 1994·Granted Nov 16, 1999·4 cites·36 claims
- 2738US5128435AMagnetic recording medium based on epoxy resins modified by isocyanates with poly(perfluoroether) backbonesHITACHI LTD·Filed 1990·Granted Jul 7, 1992·3 cites·11 claims
- 2837US5830834AAmmonium carboxylate type fluorine-containing compound, solid surface modifier containing the same and magnetic recording medium using the sameHITACHI LTD·Filed 1996·Granted Nov 3, 1998·2 cites·7 claims
- 2936US2010195240A1Thermally assisted magnetic recording disk driveHITACHI LTD·Filed 2010·Application pending·0 cites
- 3030US5346633AMethod for surface treatment of a body, surface treatment agent, surface treated body, surface treated members, and apparatus being furnished with sameHITACHI LTD·Filed 1992·Granted Sep 13, 1994·2 cites·9 claims
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