Inventor

Mitsuru Hashimoto

Inventor

Numazu, JP

Overview

1976–2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 97 as inventor

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

G03Gprimary

G03GElectrography33%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments16%

C07CAcyclic or carbocyclic compounds8%

C07DHeterocyclic compounds7%

H01BCables5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution3%

H01JElectric discharge tubes or discharge lamps2%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h102%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

10,726,969Multilayer insulated wire and multilayer insulated cable2020 10,497,489Cable2019 10,186,349Non-halogen flame-retardant insulated electric wire and non-halogen flame-retardant cable2019 10,053,773Method of cleaning plasma processing apparatus2018 9,984,793Non-halogen multilayer insulating wire2018 9,953,746Insulated wire and cable2018 9,647,206'Method for etching layer to be etched'2017 9,624,366'Crosslinkable halogen-free resin composition, cross-linked insulated wire and cable'2017 9,624,365'Halogen-free crosslinkable resin composition, cross-linked insulation wire and cable'2017 9,627,099'Crosslinkable halogen-free resin composition, cross-linked insulated wire and cable'2017 9,530,536'Non-halogen multilayer insulated wire and method for producing the same'2016 8,941,778'Video display apparatus'2015 8,785,216'Substrate processing apparatus, substrate processing method, and program for implementing the method'2014 8,318,374'Fuel cell comprising oxygen electrode with surface nanostructure'2012 7,882,800'Ring mechanism, and plasma processing device using the ring mechanism'2011 7,695,850'Electrode for use in oxygen reduction'2010 7,462,373'Method for producing manganese oxide nanoparticle dispersed material and electrode'2008 7,402,340'High thermal conductive element, method for manufacturing same, and heat radiating system'2008 7,252,795'High thermal conductivite element, method for manufacturing same, and heat radiating system'2007 7,147,529'Electron emission material, method of manufacturing the same, and electron emission element including the same'2006 6,630,607'Aromatic methylidene compounds, aromatic aldehyde compounds and methylstyryl compounds used to prepare the methylidene compounds, and methods for preparing these compounds'2003 6,277,503'Organic electroluminescent component'2001 5,816,134'Compressor piston and piston type compressor'1998 5,616,801'Charge transporting materials and electrophotographic photoconductors using the same'1997 5,499,515'Rotary vane-type compressor'1996 5,462,826'Charge transporting materials and electrophotographic photoconductors using the same'1995 5,459,247'Bisazo compounds useful as charge generating materials'1995 5,377,899'Method for producing solder that contains therein additive particles maintaining its shape'1995 5,370,954'Photoconductive composition containing trisazo and disazo compounds'1994 5,344,735'Bisazo electrophotographic photoconductor'1994 5,317,093'Bisazo compounds useful as organic photoconductive materials'1994 5,260,156'1,3-pentadiene derivatives and electrophotographic photoconductor using the same'1993 5,252,750'Polyolefin amino derivatives'1993 5,250,733'Benzylideneindene compounds and electrophotographic photoconductor using the same'1993 5,250,377'Aromatic diolefinic compounds, aromatic diethyl compounds and electrophotographic photoconductors comprising one aromatic diethyl compound'1993 5,166,438'1,3-pentadiene derivatives and electrophotographic photoconductor using the same'1992 5,159,087'Aromatic diolefinic compounds, aromatic diethyl compounds and electrophotographic photoconductors comprising one aromatic diethyl compound'1992 5,118,986'Electroluminescent device'1992 5,097,022'Bisazo pigments for use in electrophotographic photoconductors'1992 5,077,142'Electroluminescent devices'1991 5,072,061'1,14-bis(4-nitrophenyl)-1,3,5,7,9,11,13-tetradecaheptaene and preparation method thereof'1991 5,068,350'Polyolefin derivatives'1991 4,965,157'Electrophotographic photoconductor and polyolefin derivatives employed in the same photoconductor'1990 4,959,290'Benzylideneindene compounds and electrophotographic photoconductor using the same'1990 4,931,350'Electrophotographic photoconductor having an arylalkylenearylamino photoconductor'1990 4,925,758'Electrophotographic photoconductor'1990 4,916,039'Electrophotographic photoconductor'1990 4,898,800'Aminobiphenyl charge transporting materials and electrophotographic photoconductors using the same'1990 4,886,846'Aromatic diolefinic compounds, aromatic diethyl compounds and electrophotographic photoconductors comprising one aromatic diethyl compound'1989 4,830,942'Electrophotographic photoconductor'1989 4,784,905'Thermosensitive image transfer recording medium'1988 4,708,921'Photosensitive material containing disazo compound for use in electrophotography'1987 4,666,805'Photosensitive material containing disazo compound for use in electrophotography'1987 4,656,257'Disazo compound having an anthraquinone nucleus'1987 4,619,878'Tetrazonium salt compound, disazo compound, method for preparing the same, and photosensitive material containing said disazo compound for use in electrophotography'1986 4,618,672'Bisazo compounds useful as charge generating pigments in electrophotography'1986 4,614,682'Thermosensitive image transfer recording medium'1986 4,596,754'Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate'1986 4,555,567'2,6-Disazo anthraquinone compounds'1985 4,554,233'Electrophotographic toner containing triazolium compound as charge controlling agent'1985 4,537,844'Electrophotographic element containing disazo compound'1985 4,486,522'Tetrazonium salt, novel disazo compound, method of preparing same and electrophotographic element using same'1984 4,481,271'Layered electrophotographic photoconductor containing a hydrazone'1984 4,454,212'Electrophotographic photoconductor'1984 4,451,545'Electrophotographic element with carbazole derivative'1984 4,440,845'Disazo compound, method of making same and electrophotographic element using same'1984 4,426,327'3,6-Disazo-9-ethyl carbazole compounds'1984 4,400,455'Layered organic electrophotographic photoconductor element comprising bisazo generating and hydrazone transport layers'1983 4,390,608'Layered charge generator/transport electrophotographic photoconductor uses bisazo pigment'1983 4,365,014'Electrophotographic photoconductor'1982 4,343,882'Electrophotographic bisazo photoconductor'1982 4,338,388'Electrophotographic element with a phenyhydrazone charge transport layer'1982 4,332,948'Novel hydrazone compounds and process for preparing the same'1982 4,327,168'Electrophotographic element containing disazo pigment charge generating material'1982 4,325,871'Ortho-Bis (2-substituted azostyryl) benzene compounds'1982 4,314,016'Electrophotographic element having a bisazo photoconductor'1982 4,314,015'Electrophotographic sensitive materials containing disazo compounds'1982 4,299,896'Electrophotographic sensitive materials containing a disazo pigment'1981 4,297,426'Electrophotographic element with carbazole hydrazone or anile charge transport compounds'1981 4,293,492'Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole'1981 4,293,628'Electrophotographic elements containing disazo compounds'1981 4,279,981'Electrophotographic elements containing trisazo compounds'1981 4,272,598'Electrophotographic material containing disazo compounds'1981 4,268,596'Electrophotographic element having 1,4-bis(azostyryl)-2,5 dimethoxy benzene compounds as photoconductors'1981 4,264,695'Electrophotographic photosensitive material with electron donors and electron acceptors'1981 4,260,672'Electrophotographic sensitive element having a photoconductive disazo pigment'1981 4,251,614'Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials'1981 4,251,613'Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials'1981 4,247,614'Electrophotographic element containing a disazo pigment'1981 4,245,021'Electrophotographic element having charge transport layer'1981 4,242,260'2-Hydroxy-3-carbonylanilinonaphth-1-yl disazo derivatives and 1-phenyl-3-methyl-5-hydroxypyrazol-4-yl disazo derivatives of 1,4-bis(4-aminostyryl) benzene'1980 4,148,638'Photoconductive sensitive material with a trinitro-11-indeno[1,2-b]quinoxaline-11-one'1979 4,135,928'Electrophotographic light-sensitive member'1979 4,108,656'Photoconductive member having a charge generating pigment and 2,4,7-trinitrothioxanthone as charge transport material'1978 4,066,454'Electrophotographic light-sensitive material containing indenothiophenone or its derivative and process of preparing indenothiophenone and its derivative'1978 3,987,060'Dicyanomethylene-indeno thiophene and derivatives'1976 3,974,167'(7-Nitro-2-aza-9-fluorenylidene) malononitrile'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1997Patents assigned to RICOH KK (72)· patent assignee history

1976–1995Based in Tokyo, JP· patent location history

1979–1984Based in Hino, JP· patent location history

1981–1997Based in Numazu, JP· patent location history

1990–1993Patents assigned to HODOGAYA CHEMICAL CO LTD (5)· patent assignee history

2001–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history

2006–2008Based in Nara, JP· patent location history

2011–2018Patents assigned to TOKYO ELECTRON LTD (4)· patent assignee history

2016–2020Patents assigned to HITACHI METALS LTD (9)· patent assignee history

2016–2020Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	72	1976–1997
HITACHI METALS LTD	9	2016–2020
HODOGAYA CHEMICAL CO LTD	5	1990–1993
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	5	2001–2008
TOKYO ELECTRON LTD	4	2011–2018

Locations

Location	Patents	Span
Numazu, JP	52	1981–1997
Hino, JP	13	1979–1984
Hitachi, JP	9	2016–2020
Tokyo, JP	8	1976–1995
Nara, JP	4	2006–2008