Inventor

Masaaki Okunaka

Inventor

Fujisawa, JP

Overview

25→

Patents

1981–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 25 as inventor

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

H10Kprimary

H10KOrganic electric solid-state devices22%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation7%

C03CChemical composition of glasses, glazes or vitreous enamels5%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

C23CCoating metallic material5%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices5%

G09GArrangements or circuits for control of indicating devices using static means to present variable information5%

PatentTitleYear

8,237,353'Organic EL display device'2012 8,129,902'Organic EL display device comprising moisture diffusion reduction banks structure'2012 7,786,666'Organic electroluminescent display device'2010 7,705,531'Organic electroluminescent display device with a light shielding member arranged on an end wall face of a periphery of the substrate'2010 7,671,825'Method of driving organic EL device and display device'2010 7,642,701'Organic EL display device'2010 7,479,953'Display device'2009 7,474,046'Display panel'2009 7,332,854'Organic EL display device'2008 7,258,586'Method for manufacturing an organic electroluminescence display'2007 7,034,453'Organic EL display device with arrangement to suppress degradation of the light emitting region'2006 6,936,409'Organic-electroluminescence device, process for its production and organic-electroluminescence display system'2005 6,937,296'Flat panel display unit and method of repairing defects in its line pattern'2005 6,814,887'Organic-electroluminescence device, process for its production and organic-electroluminescence display system'2004 6,696,181'Organic-electroluminescence device, process for its production and organic-electroluminescence display system'2004 5,883,437'Method and apparatus for inspection and correction of wiring of electronic circuit and for manufacture thereof'1999 4,643,913'Process for producing solar cells'1987 4,510,222'Photomask with corrected white defects'1985 4,495,218'Process for forming thin film'1985 4,486,232'Electrode material for semi-conductor devices'1984 4,463,073'Method and apparatus for redressing defective photomask'1984 4,444,801'Method and apparatus for correcting transparent defects on a photomask'1984 4,420,500'Composition and process for preparing transparent conducting film'1983 4,369,208'Process for producing transparent electroconductive film'1983 4,303,554'Composition and process for producing transparent conductive film'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2005Patents assigned to HITACHI LTD (14)· patent assignee history

1981–2012Based in Fujisawa, JP· patent location history

1983Patents assigned to HITACHI CHEMICAL CO LTD (2)· patent assignee history

2005Based in Tokyo, JP· patent location history

2006–2012Patents assigned to HITACHI DISPLAYS LTD (11)· patent assignee history

2006–2012Based in Mobara, JP· patent location history

2012Patents assigned to OKUNAKA MASAAKI (2)· patent assignee history

2012Patents assigned to PANASONIC LIQUID CRYSTAL DISPL (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	14	1981–2005
HITACHI DISPLAYS LTD	11	2006–2012
HITACHI CHEMICAL CO LTD	2	1983
OKUNAKA MASAAKIself	2	2012
PANASONIC LIQUID CRYSTAL DISPL	2	2012

Locations

Location	Patents	Span
Fujisawa, JP	19	1981–2012
Mobara, JP	5	2006–2012
Tokyo, JP	1	2005