LexDanaLexDanabeta
Inventor

Takeshi Nakao

Inventor
Sagamihara, JP

Overview

76→
Patents
1986–2015
Patent span
Electricity
Primary field (CPC H)

Patents· 76 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Hprimary
H03HImpedance networks, e.g. resonant circuits29%
G11BInformation storage based on relative movement between record carrier and transducer22%
Y10TTechnical subjects covered by former us classification17%
B82YSpecific uses or applications of nanostructures6%
G01RMeasuring electric variables6%
H01FMagnets6%
H10NElectric solid-state devices not otherwise provided for6%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%
H04NPictorial communication, e.g. television2%
G02BOptical elements, systems or apparatus1%
PatentTitleYear
9,210,388'Laser source module and scanning image display device equipped with such module'20159,196,818'Boundary acoustic wave device'20159,036,233'Laser light source module'20158,810,104'Acoustic wave device and method for fabricating the same'20148,693,075'Scan type image display device'20148,677,582'Method for fabricating acoustic wave device'20148,436,510'Boundary acoustic wave device'20138,427,032'Surface acoustic wave device'20138,390,400'Acoustic wave element having an electrode finger with a protrusion'20137,876,021'Surface acoustic wave device including an IDT defined by a metal filled in grooves in a piezoelectric substrate'20117,821,179'Acoustic wave resonator'20107,804,221'Surface acoustic wave device'20107,730,596'Method for manufacturing a surface acoustic wave device'20107,701,113'Acoustic wave device and method for fabricating the same'20107,701,114'Surface acoustic wave device'20107,649,303—20107,569,972'Surface acoustic wave device'20097,418,772'Method for manufacturing a surface acoustic wave'20087,411,334'Surface acoustic wave apparatus and manufacturing method therefor'20087,345,400'Surface acoustic wave device'20087,339,304'Surface acoustic wave device'20087,327,071'Surface acoustic wave device'20087,230,365'Surface acoustic wave apparatus and manufacturing method therefor'20077,218,039'Surface acoustic wave device'20077,212,080'Surface acoustic wave device having two piezoelectric substrates with different cut angles'20077,208,860'Surface acoustic wave device'20077,209,018'Surface acoustic wave device'20077,159,303'Method for manufacturing magnetic head device'20077,141,909'Surface acoustic wave device'20067,109,634'End surface reflection type surface acoustic wave device'20067,054,120'Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect'20067,034,433'Surface acoustic wave device'20067,009,468'Surface acoustic wave device and electronic device using the same'20066,946,930'Surface acoustic wave device and electronic device using the same'20056,911,881'Surface acoustic wave device'20056,879,225'Surface acoustic wave device'20056,865,786'Method for manufacturing a surface acoustic wave device using a shear horizontal type surface acoustic wave'20056,836,196'Surface acoustic wave apparatus utilizing a leaky surface acoustic wave'20046,826,815'Method for manufacturing a surface acoustic wave device'20046,806,796'End-surface reflection type surface acoustic wave filter'20046,784,764'End-surface reflection type surface acoustic wave filter'20046,725,513'Method for manufacturing surface acoustic wave apparatus'20046,687,099'Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference'20046,617,752'Surface acoustic wave device and manufacturing method therefor'20036,603,371'Surface acoustic wave device having a small acoustic velocity distribution and method of producing the same'20036,483,677'Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect'20026,437,668'Surface acoustic wave resonator, surface acoustic wave device, and communication device using shear horizontal waves'20026,369,491'Surface acoustic wave device and method for manufacturing the same'20026,278,593'Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect'20016,272,097'Optical head and apparatus for recording and reproducing optical information through the use of the optical head'20016,154,105'Surface acoustic wave device with specific electrode materials and quartz substrate euler angles'20006,125,087'Optical pickup for optical disk apparatus'20006,011,674'Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions'20005,930,220'Tracking method for optical disk apparatus using diffraction light'19995,736,235'Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction'19985,726,837'Multilayer magnetoresistance effect-type magnetic head'19985,568,331'Method of head positioning and magnetic recording disk drive using the same'19965,490,133'Optical information processing apparatus and method of controlling position of optical spot and reproducing signals'19965,404,344'Recording/reproducing optical head producing focusing error signal from zero-th order diffracted light and tracking error signal from first order diffracted light'19955,390,061'Multilayer magnetoresistance effect-type magnetic head'19955,377,178'Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization'19945,361,244'Optical head and information recording apparatus'19945,325,244'Magnetic recording data storage system'19945,315,573'Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity'19945,270,987'Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor'19935,253,232'Magneto-optical recording apparatus having a magnetic slider with increased rail width'19935,235,591'Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium'19935,093,822'High-density magnetic recording and optical reproducing apparatus'19925,060,208'Magnetooptical recording method and apparatus utilizing shift adjustment'19915,043,960'Overwritable magneto-optic recording and reproducing apparatus'19915,020,041'Magneto-optical memory apparatus having a floating magnetic head'19915,016,234'Two-laser collimated beam optical head with monitor'19914,982,389'Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium'19914,901,325'Semiconductor laser device'19904,803,674'Magneto-optical recorder with small-sized, low-powered electromagnetic coil'19894,622,564'Optical information recording apparatus'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2004Patents assigned to HITACHI LTD (29)· patent assignee history
1986Based in Kukubunji, JP· patent location history
1989–2015Based in Sagamihara, JP· patent location history
1996Based in Sgamihara, JP· patent location history
2000–2015Patents assigned to MURATA MANUFACTURING CO (40)· patent assignee history
2000–2013Based in Nagaokakyo, JP· patent location history
2007–2015Based in Omihachiman, JP· patent location history
2013–2015Patents assigned to NAKAO TAKESHI (7)· patent assignee history
2013–2014Patents assigned to KADOTA MICHIO (3)· patent assignee history
2013–2014Patents assigned to KIDO SHUNSUKE (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MURATA MANUFACTURING CO402000–2015
HITACHI LTD291986–2004
NAKAO TAKESHIself72013–2015
KADOTA MICHIO32013–2014
KIDO SHUNSUKE32013–2014
Locations
LocationPatentsSpan
Sagamihara, JP321989–2015
Nagaokakyo, JP272000–2013
Omihachiman, JP152007–2015
Sgamihara, JP11996
Kukubunji, JP11986