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Inventor

Shinji Ohta

Inventor
Shizuoka, JP

Overview

31→
Patents
1990–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 31 as inventor

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

H05Bprimary
H05BElectric heating29%
G11BInformation storage based on relative movement between record carrier and transducer12%
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general8%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
G02BOptical elements, systems or apparatus3%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems3%
H04BTransmission3%
H04LTransmission of digital information, e.g. telegraphic communication3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,812,195Optical communication device202010,375,783Lighting circuit and vehicular lamp201910,306,725Light source drive device and vehicle lamp201910,081,301Lighting circuit and vehicular turn signal lamp20189,974,128Light source lighting circuit and turn signal lamp20189,162,607'Vehicular lamp'20158,120,264'Discharge lamp lighting circuit'20127,557,513'Discharge lamp lighting circuit'20097,496,010'Disk drive and pre-pit detection method'20097,417,381'Discharge lamp lighting circuit'20087,397,197'Discharge lamp lighting circuit'20087,354,677'Battery pack'20087,282,872'Discharge lamp lighting circuit'20077,196,912'Lighting apparatus for discharge lamp'20077,176,775'Transformer and discharge lamp lighting device'20077,176,638'Discharge lamp lighting circuit'20077,075,806'DC voltage conversion circuit'20067,005,808'Discharge lamp illumination circuit'20066,942,481'Disk production apparatus and disk produced by disk production apparatus'20056,826,063'DC voltage converting circuit'20046,765,851'Optical disc, data-recording apparatus and data-recording method'20046,751,171'Method and apparatus for controlling servo loop amplification according to wobble signals formed in a guide groove of an optical disc'20046,707,261'Discharge lamp lighting circuit'20046,246,649'Optical disc reproducing apparatus and method'20016,023,839'Disk drive motor, and method of manufacturing its rotor'20005,675,430'Rotary polygon mirror'19975,490,127'Asymmetry detector for use in an optical recording and reproducing device'19965,475,383'Cross-point type switch using common memories'19955,353,305'Initial training apparatus for use in a transmitter and receiver apparatus'19945,056,121'Circuit for obtaining accurate timing information from received signal'19914,920,535'Demultiplexer system'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1995Patents assigned to FUJITSU LTD (4)· patent assignee history
1990–2005Based in Kawasaki, JP· patent location history
1996–2020Patents assigned to SONY CORP (6)· patent assignee history
1996–2020Based in Kanagawa, JP· patent location history
1997–2000Patents assigned to SANKYO SEIKI SEISAKUSHO KK (2)· patent assignee history
1997–2000Based in Nagano, JP· patent location history
2004–2019Patents assigned to KOITO MFG CO LTD (17)· patent assignee history
2004–2019Based in Shizuoka, JP· patent location history
2008Based in Osaka, JP· patent location history
2012Patents assigned to ICHIKAWA TOMOYUKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOITO MFG CO LTD172004–2019
SONY CORP61996–2020
FUJITSU LTD41990–1995
SANKYO SEIKI SEISAKUSHO KK21997–2000
ICHIKAWA TOMOYUKI12012
Locations
LocationPatentsSpan
Shizuoka, JP172004–2019
Kanagawa, JP61996–2020
Kawasaki, JP51990–2005
Nagano, JP21997–2000
Osaka, JP12008