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Inventor

Shigeo Fujita

Inventor
Nagano, JP

Overview

75→
Patents
1985–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 75 as inventor

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

G03Gprimary
G03GElectrography13%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments9%
C07DHeterocyclic compounds7%
D21FPaper-making machines7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
G11BInformation storage based on relative movement between record carrier and transducer5%
D21BFibrous raw materials or their mechanical treatment4%
B41MPrinting, duplicating, marking, or copying processes4%
B82YSpecific uses or applications of nanostructures4%
D04HMaking textile fabrics, e.g. from fibres or filamentary material4%
PatentTitleYear
10,619,302Sheet manufacturing apparatus202010,345,742Sheet manufacturing apparatus, powder storage container for sheet manufacturing apparatus, and powder supply device201910,246,824Sheet manufacturing apparatus201910,145,046Sheet manufacturing apparatus201810,137,614Sheet manufacturing apparatus201810,100,466Sheet manufacturing apparatus20189,982,391Sheet manufacturing apparatus20189,890,005'Sheet manufacturing apparatus'20189,856,104'Sheet manufacturing apparatus'20189,617,103'Sheet manufacturing apparatus'20179,540,768'Sheet manufacturing apparatus'20179,334,590'Sheet manufacturing apparatus'20169,328,461'Sheet manufacturing apparatus'20168,786,986'Head-slider including thin-film magnetic-recording head having reduced thermal protrusion'20148,537,503'CPP structure magnetoresistive head'20138,335,057'CPP magnetoresistive head'20128,287,760'Light-emitting apparatus, phosphorescent portion, and method of producing the same'20127,709,660'Polymethine ether compounds'20107,700,001'Light-emitting apparatus, phosphor and method of producing it'20107,581,998'Method for regulating aground electrode position in spark plug'20097,560,859'Fluorescent material having two layer structure and light emitting apparatus employing the same'20097,485,404'Nonsolvate-form crystal of polymethine compound and process for producing the same'20097,463,859'Waste toner transporting device with screw for transporting waste toner to waste toner discharge port'20087,446,212'Polymethine ethers'20087,348,600'Nitride semiconductor device, and its fabrication process'20087,239,835'Image forming apparatus with contact/separation mechanism'20077,231,156'Image forming apparatus'20077,209,694'Image forming apparatus having a medium transporting belt formed in an endless shape and having a first and second region'20077,171,140'Image forming apparatus'20077,133,631'Transfer device, with transfer pressure control'20067,113,733'Image forming apparatus with moveable cleaning or transfer member'20067,112,112'Method and apparatus for making a spark plug with a predetermined spark gap'20067,085,523'Image forming apparatus having a medium transporting belt formed in an endless shape'20067,058,103'Light-emitting apparatus, phosphor, and method of producing it'2006RE039105'Polymethine compounds, method of producing same, and use thereof'20066,876,009'Nitride semiconductor device and a process of manufacturing the same'20056,790,113'Method and apparatus for making spark plug'20046,766,124'Image forming apparatus and image forming method having speed control to improve throughput'20046,716,993'Polymethine compound and near-infrared absorbing material comprising same'20046,554,444'Gazing point illuminating device'20036,468,713'Phthalocyanine compounds, process for producing the same, and near infrared absorbent comprising the same'20026,373,020'Welding apparatus'20026,342,335'Polymethine compounds, method of producing same, and use thereof'20026,334,638'Attachment structure for bumper beam'20026,329,626'Welding apparatus'20016,261,737'Polymethine compounds, method of producing same, and use thereof'20016,093,832'Diiminoisoindoline compound and the process for producing the compound and use thereof'20006,070,043'Device for cleaning a transfer belt of an image-forming machine'20006,066,729'Photothermal conversion material'20005,973,140'Phthalocyanine compound, its intermediate, process for producing the compound, and use thereof'19995,893,659'Image forming apparatus with transfer current controller and method of forming an image using the same'19995,689,758'Image-transfer and sheet-separation apparatus'19975,669,054'Multi-directional driving mechanism and transfer device for an image forming machine using such mechanism'19975,640,661'Transfer device for an image forming machine'19975,630,194'Image forming machine'19975,603,581'Structure and method for joining extrudate member and mating member'19975,602,634'Transfer device of image forming machine'19975,574,550'Transfer device for image forming machine'1996RE035044'Cyanine compounds'19955,438,032'Crystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications'19955,426,485'Cleaning device for a transfer belt of an image forming apparatus'19955,408,300'Image-transfer and sheet-separation apparatus'19955,376,617'Crystal modification of 2-(3-methylanilion)-3-methyl-6-diethylamino-fluoran, process for the preparation thereof, and recording materials containing said crystal modification'19945,342,967'Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications'19945,338,866'Crystal modification of 2-(3-methylanilino)-3-methyl-6-diethylaminofluoran, process for the preparation thereof, and recording materials containing said crystal modification'19945,298,954'Image forming apparatus'19945,296,718'Light emitting semiconductor device having multilayer structure'19945,294,818'MISFET including GaAs substrate and a Group II-VI gate insulator'19945,283,513'Battery charging device for electric vehicles'19945,233,394'Transfer device for use in an image forming apparatus'19935,087,704'Cyanine compounds'19925,055,589'Indolenine derivative'19915,008,401'Cyanine compounds'19914,632,711'Vapor phase epitaxial growth method of zinc selenide and zinc selenide-sulphide by organometallic chemical vapor deposition'19864,517,178'Novel antibiotic 76-11, process for the production thereof, anticoccidiosis agent and domestic animals growth accelerator comprising the same as an effective ingredient'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2012Based in Kyoto, JP· patent location history
1991–1995Patents assigned to ASAHI CHEMICAL CO (4)· patent assignee history
1991–2006Based in Osaka, JP· patent location history
1991–2004Based in Kawachinagano, JP· patent location history
1993–1999Patents assigned to MITA INDUSTRIAL CO LTD (11)· patent assignee history
1993–1997Based in Moriguchi, JP· patent location history
1994–2010Patents assigned to YAMAMOTO CHEMICALS INC (15)· patent assignee history
2004–2020Patents assigned to SEIKO EPSON CORP (22)· patent assignee history
2004–2019Based in Nagano, JP· patent location history
2005–2014Patents assigned to FUJITA SHIGEO (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP222004–2020
YAMAMOTO CHEMICALS INC151994–2010
MITA INDUSTRIAL CO LTD111993–1999
FUJITA SHIGEOself52005–2014
ASAHI CHEMICAL CO41991–1995
Locations
LocationPatentsSpan
Nagano, JP192004–2019
Osaka, JP181991–2006
Kyoto, JP91986–2012
Kawachinagano, JP61991–2004
Moriguchi, JP41993–1997