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Inventor

Shigemi Hirasawa

Inventor
Chiba, JP

Overview

38→
Patents
1976–2011
Patent span
Electricity
Primary field (CPC H)

Patents· 38 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps61%
C03CChemical composition of glasses, glazes or vitreous enamels7%
B82YSpecific uses or applications of nanostructures5%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
C01BNon-metallic elements3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
G09GArrangements or circuits for control of indicating devices using static means to present variable information3%
Y10TTechnical subjects covered by former us classification3%
A45DHairdressing or shaving equipment2%
A61KPreparations for medical, dental or toiletry purposes2%
PatentTitleYear
8,075,961'Display apparatus'20118,071,183'Display apparatus'20118,022,000'Display device and production method thereof'20117,755,269'Spacer and image display panel using the same'20107,501,751'Display device and method of manufacturing same'20097,429,819'Display device'20087,427,827'Image display device and manufacturing method of the same'20087,417,366'Display device'20087,408,298'Image display device'20087,385,343'Display device'20087,348,721'Display device'20087,332,856'Image display device'20087,327,075'Image display device with support member between front and rear substrates'20087,319,286'Display device'20087,304,423'Emissive display device'20077,285,901'Display device having a connecting portion between cathode line and electron source'20077,282,851'Display device'20077,233,103'Image display device'20077,221,086'Display device including a shield member'20077,190,107'Display devices provided with an arrangement of electron sources and control electrodes'20077,148,620'Image display device'20067,129,630'Display device'20067,071,607'Display device having a large number of cathode lines'20067,053,544'Display device'20066,958,570'Display device'20056,936,958'Display device'20056,822,388'Display device with plate-like control electrodes'20046,717,352'Display device'20046,713,947'Display device and method of manufacturing the same'20046,611,312'Display device including outer frame with some neighboring wall members that are engaged with each other have oblique surfaces'20035,757,117'Cathode ray tube with conductive silicon adhesive'19985,160,287'Color picture tube manufacturing method'19925,028,836'Color cathode ray tube of shadow mask type'19914,857,795'Internal magnetic shield support apparatus for color picture tube'19894,760,310'Cathode-ray tubes and coating materials therefor'19884,403,170'Color picture tubes'19834,221,990'Phosphor screen for post-focusing type color picture tube'19803,967,985'Process for treating surfaces of a perforated mask'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2007Patents assigned to HITACHI LTD (14)· patent assignee history
1976–1983Based in Mobara, JP· patent location history
1988–2011Based in Chiba, JP· patent location history
1989–2008Patents assigned to HITACHI DEVICE ENG (10)· patent assignee history
2006–2011Patents assigned to HITACHI DISPLAYS LTD (22)· patent assignee history
2011Patents assigned to ASAKURA SHUNICHI (2)· patent assignee history
2011Patents assigned to HATORI AKIRA (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI DISPLAYS LTD222006–2011
HITACHI LTD141976–2007
HITACHI DEVICE ENG101989–2008
ASAKURA SHUNICHI22011
HATORI AKIRA22011
Locations
LocationPatentsSpan
Chiba, JP351988–2011
Mobara, JP31976–1983