Inventor
NAKAKAWAJI TAKAYUKI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “NAKAKAWAJI TAKAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
25 patentsUS5835305ANov 10, 1998
Magnetic disk apparatus employing liquid bearing type or physical contact type magnetic head slider
HITACHI LTD24 citations92
US5820964AOct 13, 1998
Magnetic disk, and magnetic disk apparatus
HITACHI LTD22 citations92
US5157066AOct 20, 1992
Fluoroalkyl ether, surface modifying composition and method for modifying surface
HITACHI LTD27 citations92
US5204202AApr 20, 1993
Electrophotographic photosensitive element comprising a protective layer with a porous surface impregnated with lubricant
HITACHI LTD24 citations90
US6816341B2Nov 9, 2004
Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group
HITACHI LTD13 citations83
US5252418AOct 12, 1993
Electrophotographic photoreceptor with protruding inorganic insulator pieces and an electrophotographic apparatus utilizing the same
HITACHI LTD20 citations82
US5219651AJun 15, 1993
Magnetic recording apparatus comprising a magnetic recording medium and a magnetic head each coated with a coating of a binder and a specified fluorolubricant
HITACHI LTD20 citations79
US5536578AJul 16, 1996
Magnetic recording medium comprising a protective layer and a layer of ammonium carboxylate fluorine-containing compound
HITACHI LTD9 citations74
US6555197B1Apr 29, 2003
Lubricant, magnetic disk and magnetic disk apparatus
HITACHI LTD5 citations73
US6323163B1Nov 27, 2001
Fluorocompound, lubricant, surface modifier, lubricating film, magnetic recording medium, and magnetic recording device
HITACHI LTD10 citations73
US6296917B1Oct 2, 2001
Magnetic disk and magnetic recording/reproduction apparatus
HITACHI LTD7 citations73
US5549835AAug 27, 1996
Apparatus equipped with a cooling block unit having sliding parts and a compound used to the same
HITACHI LTD15 citations73
US5456980AOct 10, 1995
Ammonium carboxylate lubricant and magnetic recording medium using the same
HITACHI LTD17 citations73
US5073466ADec 17, 1991
Electrophotographic member containing a fluorine-containing lubricating agent and process for producing the same
HITACHI LTD12 citations72
US4990418AFeb 5, 1991
Electrophotographic photoreceptor and method of producing the same
HITACHI LTD16 citations72
US6605335B2Aug 12, 2003
Magnetic recording medium
HITACHI LTD11 citations69
US5830834ANov 3, 1998
Ammonium carboxylate type fluorine-containing compound, solid surface modifier containing the same and magnetic recording medium using the same
HITACHI LTD2 citations63
US5346633ASep 13, 1994
Method for surface treatment of a body, surface treatment agent, surface treated body, surface treated members, and apparatus being furnished with same
HITACHI LTD2 citations62
US5128435AJul 7, 1992
Magnetic recording medium based on epoxy resins modified by isocyanates with poly(perfluoroether) backbones
HITACHI LTD3 citations62
US5985403ANov 16, 1999
Magnetic recording medium and magnetic recording reproducer
HITACHI LTD4 citations61
US10155916B2Dec 18, 2018
Lubricant for gas insulated switchgear, and gas insulated switchgear
HITACHI LTD0 citations51
US7820114B2Oct 26, 2010
Reaction container for chemical analysis with the controlled surface property
HITACHI LTD0 citations51
US6917495B2Jul 12, 2005
Magnetic disk drive
HITACHI LTD1 citations51
US6869536B2Mar 22, 2005
Lubricant, magnetic disk and magnetic disk apparatus
HITACHI LTD0 citations51
US6665147B2Dec 16, 2003
Magnetic disk drive with supply of perfluoropolyether as lubricant
HITACHI LTD1 citations51