Inventor

Masayuki Iwasaki

Inventor

Shizuoka, JP

Overview

1977–2014

Patent span

Physics

Primary field (CPC G)

Patents· 91 as inventor

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

G03Fprimary

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices24%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein11%

G11BInformation storage based on relative movement between record carrier and transducer11%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds10%

B41MPrinting, duplicating, marking, or copying processes7%

G02BOptical elements, systems or apparatus4%

H05KPrinted circuits4%

G03CPhotosensitive materials for photographic purposes3%

C07DHeterocyclic compounds2%

PatentTitleYear

8,906,298'Method for protecting substrate'2014 8,111,594'Optical disk drive and optical pickup having aberration correction means'2012 7,839,458'Liquid crystal optical element having grouped concentric electrodes'2010 7,414,950'Aberration correction liquid crystal device and optical pickup apparatus'2008 7,192,904'Thermal recording material'2007 7,160,840'Thermal recording material'2007 7,135,431'Thermosensitive recording material'2006 7,126,901'Device and unit for correcting aberration of light beam'2006 7,098,168'Heat-sensitive recording material'2006 6,972,272'Heat-sensitive recording material'2005 6,909,686'Aberration correcting optical unit, optical pickup apparatus and information recording/reproducing apparatus with single and multi-layer electrodes'2005 6,881,529'Positive photoresist transfer material and method for processing surface of substrate using the transfer material'2005 6,865,144'Optical pickup apparatus and tilt amount detecting method'2005 6,859,429'Aberration correcting unit, optical pickup apparatus, and recording/reproducing apparatus'2005 6,852,671'Heat-sensitive recording material'2005 6,818,592'Heat-sensitive recording material'2004 6,804,185'Optical pickup and information recording and/or reproducing apparatus including the same'2004 6,800,588'Thermal recording material'2004 6,730,632'Heat-sensitive recording material'2004 6,720,286'Heat-sensitive recording material'2004 6,714,510'Information recording medium including layer of uniform thickness and reproducing device thereof'2004 6,699,816'Heat-sensitive recording material'2004 6,690,500'Aberration correction apparatus and method'2004 6,674,710'Liquid-crystal panel, optical pickup, and information reproducing system'2004 6,643,244'Liquid-crystal panel, optical pickup, and information reproducing system'2003 6,642,175'Heat-sensitive recording material'2003 6,628,589'Optical reproducing aberration compensation system having appropriate correction signals applied to a liquid crystal detector'2003 6,487,160'Optical pickup, information recording apparatus and information reproducing apparatus'2002 6,396,225'DC current brushless motor driving apparatus and air conditioner with using thereof'2002 6,078,554'Wave-front aberration compensation unit, wave-front aberration compensation device, and optical pickup'2000 5,949,748'Optical write/read head with a pretilted liquid crystal panel'1999 5,936,923'Optical pickup with aberration correcting panel including a liquid crystal'1999 5,916,714'Preparation of a pixel sheet provided with black matrix'1999 5,901,131'Optical pickup used with both DVD and CD'1999 5,858,276'DAP mode liquid crystal display device'1999 5,856,050'Coverage of pixel sheet with protective layer'1999 5,780,203'Process for forming colored partial picture element and light-shielding light-sensitive resin composition used therefor'1998 5,734,637'Optical pickup used with both DVD and CD'1998 D0381423'Support tool for insertion of a thoracoscope'1997 5,650,263'Photopolymerizable composition, color filter, and production of color filter'1997 D0381424'Support tool for insertion of a thoracoscope'1997 5,622,794'Light-shielding photosensitive resin composition, light-shielding photosensitive transfer material and method for forming light-shielding film'1997 5,614,350'Photosensitive transfer material and method of image formation using the same'1997 5,516,606'Method for forming a light shielding pattern'1996 5,514,502'Photopolymerizable composition, color filter, and production of color filter'1996 5,489,621'Process for forming colored partial picture element and light-shielding light-sensitive resin composition used therefor'1996 5,445,919'Photopolymerizable composition'1995 5,427,829'Liquid crystal display device'1995 5,409,800'Photosensitive transfer material'1995 5,397,678'Image formation method using a photosensitive transfer material'1995 5,328,803'Photopolymerizable composition'1994 5,300,401'Photopolymerizable resin material and process for preparing print circuit using the material'1994 5,298,360'Image formation process and transfer material'1994 5,294,516'Light-sensitive transfer material'1994 5,292,613'Photosensitive transfer material and image-forming process'1994 5,278,684'Parallel aligned chiral nematic liquid crystal display element'1994 5,189,535'Liquid crystal display element and method for driving same'1993 5,155,005'Method of producing polychromatic colored image'1992 5,144,463'Liquid crystal light valve using non-monochromatic writing light'1992 5,124,234'Liquid light-sensitive resin composition'1992 5,099,007'Light-sensitive quinone diazide compound containing an alkylimidazole group and method of forming a photoresist using said compound'1992 5,096,799'Photopolymerizable composition'1992 5,089,169'Liquid crystal material and display device using same'1992 5,030,548'Photo-polymerizable composition'1991 4,948,700'Liquid light-sensitive resinous composition'1990 4,925,768'Photopolymerizable composition containing a tetrapolymer binder'1990 4,923,781'Photopolymerizable composition containing 3,6-diaminofluoran compounds'1990 4,876,173'Photopolymerizable composition on polyethylene terephthalate film support'1989 4,832,461'Projection-type multi-color liquid crystal display device'1989 4,812,034'Projection type liquid crystal display device'1989 4,737,484'Heat-sensitive recording material'1988 4,661,434'Photopolymerizable composition containing a novel combination of photopolymerizable initiators'1987 4,657,942'Photopolymerizable composition'1987 4,629,680'Photopolymerizable materials capable of being developed by a weak alkaline aqueous solution'1986 4,598,036'Print-out compositions'1986 4,584,260'Photopolymerizable compositions with combined photoinitiators'1986 4,572,888'Photopolymerizable composition with adhesion improving additive'1986 4,557,997'Photo-polymerizable process of image formation using unsaturated materials and silver halide'1985 4,548,892'Photopolymerizable composition containing acylhaloacetic acid amide derivatives'1985 4,547,450'Silver halide sensor type polymerizable light-sensitive material'1985 4,543,318'Photopolymerizable composition containing heterocyclic additives'1985 4,511,645'Photosensitive plate for lithographic printing plate'1985 4,505,793'Photopolymerizable compositions'1985 4,481,276'Photopolymerizable composition containing a combination of photoinitiators'1984 4,386,120'Process for producing polyacrylic acid salt granules easily soluble in water'1983 4,279,982'Photosensitive compositions'1981 4,232,106'Photosensitive compositions containing 2-halomethyl-5-vinyl-1,3,4-oxadiazoles as free radical progenitors'1980 4,212,970'2-Halomethyl-5-vinyl-1,3,4-oxadiazole compounds'1980 4,191,573'Photosensitive positive image forming process with two photo-sensitive layers'1980 4,139,384'Photosensitive polymeric o-quinone diazide containing lithographic printing plate and process of using the plate'1979 4,028,111'Light-sensitive lithographic printing plate'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2007Patents assigned to FUJI PHOTO FILM CO LTD (59)· patent assignee history

1977–1980Based in Minami-ashigara, JP· patent location history

1981–2007Based in Shizuoka, JP· patent location history

1985–1994Based in Kanagawa, JP· patent location history

1989–1995Patents assigned to FUJITSU LTD (6)· patent assignee history

1992–2004Patents assigned to PIONEER ELECTRONIC CORP (9)· patent assignee history

1993–2012Based in Saitama, JP· patent location history

1998–2006Based in Tsurugashima, JP· patent location history

2002–2008Patents assigned to PIONEER CORP (10)· patent assignee history

2010–2012Patents assigned to CITIZEN HOLDINGS CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJI PHOTO FILM CO LTD	59	1977–2007
PIONEER CORP	10	2002–2008
PIONEER ELECTRONIC CORP	9	1992–2004
FUJITSU LTD	6	1989–1995
CITIZEN HOLDINGS CO LTD	2	2010–2012

Locations

Location	Patents	Span
Shizuoka, JP	50	1981–2007
Tsurugashima, JP	14	1998–2006
Saitama, JP	7	1993–2012
Minami-ashigara, JP	5	1977–1980
Kanagawa, JP	4	1985–1994