Inventor
HIRATA MASAKAZU
JP50 patents
⚠️ This page may combine multiple inventors who share the name “HIRATA MASAKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HIRATA MASAKAZU
14 patentsUS8411391B2Apr 2, 2013
Head gimbal assembly
HIRATA MASAKAZU8 citations83
US8755255B2Jun 17, 2014
Near-field light generating element, method of manufacturing near-field light generating element, near-field light head, method of manufacturing near-field light head, and information recording and playback device
HIRATA MASAKAZU2 citations63
US8787127B2Jul 22, 2014
Near-field light generating element, method of manufacturing near-field light generating element, near-field light head, method of manufacturing near-field light head, and information recording and playback device
HIRATA MASAKAZU2 citations62
US8542559B2Sep 24, 2013
Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguide
HIRATA MASAKAZU3 citations62
US8537646B2Sep 17, 2013
Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguide
HIRATA MASAKAZU4 citations62
US8467276B2Jun 18, 2013
Thermally-assisted magnetic recording head having photoelectric wiring lines integrally formed on waveguide
HIRATA MASAKAZU3 citations62
US8323518B2Dec 4, 2012
Fabrication method and fabrication apparatus of head using near field light
HIRATA MASAKAZU2 citations62
US8270259B2Sep 18, 2012
Near-field optical head including waveguide having polyhedron core
HIRATA MASAKAZU2 citations62
US8184506B2May 22, 2012
Near-field optical head with inclined magnetic poles and information recording/reproducing device
HIRATA MASAKAZU3 citations62
US8430991B2Apr 30, 2013
Apparatus for producing near field optical head
HIRATA MASAKAZU0 citations52
US8599654B2Dec 3, 2013
Head gimbal assembly using near-field light and information recording and reproducing apparatus including the same
HIRATA MASAKAZU0 citations51
US8493819B2Jul 23, 2013
Near-field light generating element, near-field light head, and information recording and reproducing device
HIRATA MASAKAZU0 citations42
US8842504B2Sep 23, 2014
Near-field light head and information recording/reproducing device
HIRATA MASAKAZU0 citations41
US8982494B2Mar 17, 2015
Head gimbal assembly and data recording and reproducing apparatus having the same
HIRATA MASAKAZU0 citations40
NTN TOYO BEARING CO LTD
10 patentsUS6390681B1May 21, 2002
Dynamic pressure bearing-unit
NTN TOYO BEARING CO LTD76 citations96
US5375933ADec 27, 1994
Rolling contact bearing protected against electrolytic corrosion
NTN TOYO BEARING CO LTD70 citations94
US5697709ADec 16, 1997
Dynamic pressure type bearing device
NTN TOYO BEARING CO LTD41 citations92
US5955402ASep 21, 1999
Biodegradable lubricative resin composition
NTN TOYO BEARING CO LTD34 citations91
US7703983B2Apr 27, 2010
Sliding material and sliding bearing
NTN TOYO BEARING CO LTD18 citations84
US8011833B2Sep 6, 2011
Retainer for roller bearing, and rolling bearing
NTN TOYO BEARING CO LTD6 citations74
US6673750B2Jan 6, 2004
Lubricating composition
NTN TOYO BEARING CO LTD12 citations72
US7910198B2Mar 22, 2011
Resinous porous article and method for production thereof
NTN TOYO BEARING CO LTD3 citations63
US7771125B2Aug 10, 2010
Retainer for rolling bearing, and rolling bearing
NTN TOYO BEARING CO LTD4 citations63
US8003203B2Aug 23, 2011
Resinous oil-retaining article and method for production thereof
NTN TOYO BEARING CO LTD0 citations52
SEIKO INSTR INC
10 patentsUS8050170B2Nov 1, 2011
Near field optical head and information recording and reproducing device
SEIKO INSTR INC8 citations84
US8351306B2Jan 8, 2013
Near field optical head and information recording and reproducing device
SEIKO INSTR INC3 citations62
US7966630B2Jun 21, 2011
Head gimbal mechanism and information recording/reproducing apparatus
SEIKO INSTR INC3 citations62
US8379502B2Feb 19, 2013
Recording head, method of manufacturing recording head, and information recording and playback apparatus
SEIKO INSTR INC0 citations52
US8054714B2Nov 8, 2011
Near field light assisted magnetic recording head and recording apparatus using the same
SEIKO INSTR INC0 citations52
US7635437B2Dec 22, 2009
Method of manufacturing near field light generation element
SEIKO INSTR INC1 citations52
US7132055B2Nov 7, 2006
Method of producing near field optical head
SEIKO INSTR INC0 citations52
US7113669B2Sep 26, 2006
Near field optical head and information recording and reproducing apparatus mounted with the near field optical head
SEIKO INSTR INC1 citations52
US8351304B2Jan 8, 2013
Near-field optical head and information recording/reproducing device
SEIKO INSTR INC0 citations41
US8023366B2Sep 20, 2011
Near-field optical head and information recording apparatus
SEIKO INSTR INC0 citations41
SII PRINTEK INC
7 patentsUS11919291B2Mar 5, 2024
Characteristic table generation system, method of generating characteristic table, and program of generating characteristic table
SII PRINTEK INC2 citations73
US11254132B2Feb 22, 2022
Head chip, liquid jet head, and liquid jet recording device
SII PRINTEK INC1 citations59
US12097701B2Sep 24, 2024
Jet parameter generation system, method of generating jet parameter, and non-transitory computer-readable storage medium storing program of generating jet parameter
SII PRINTEK INC0 citations52
US11225079B2Jan 18, 2022
Head chip, liquid jet head, and liquid jet recording device
SII PRINTEK INC0 citations52
US11491787B2Nov 8, 2022
Head chip, liquid jet head, and liquid jet recording device
SII PRINTEK INC0 citations49
US10710366B2Jul 14, 2020
Jet hole plate, liquid jet head, and liquid jet recording apparatus
SII PRINTEK INC0 citations48
US10814630B2Oct 27, 2020
Jet hole plate, liquid jet head, liquid jet recording apparatus, and method for manufacturing jet hole plate
SII PRINTEK INC0 citations45
FUJI ELECTRIC CO LTD
2 patentsDENKA COMPANY LTD
2 patentsUS12421438B2Sep 23, 2025
Alumina powder, resin composition, and heat dissipation component
DENKA COMPANY LTD0 citations54
US12534377B2Jan 27, 2026
Carbon-containing alumina powder, resin composition, heat dissipation component, and method for producing carbon-containing alumina powder
DENKA COMPANY LTD0 citations44