Inventor
Hirofumi Nakamura
Inventor
Kanagawa, JP
Overview
Patents· 89 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography12%
B41JTypewriters8%
C07CAcyclic or carbocyclic compounds6%
Y10TTechnical subjects covered by former us classification6%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
H10KOrganic electric solid-state devices5%
H01LSemiconductor devices4%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%
H05KPrinted circuits3%
PatentTitleYear
11,053,942Screw compressor202110,856,852Ultrasonic diagnostic system and ultrasonic diagnostic method202010,372,049Electrophotographic photoreceptor, process cartridge, and image-forming apparatus201910,095,134Image forming apparatus and image forming method201810,073,490Display and electronic unit201810,073,405Image forming apparatus201810,046,383Cu--Sn coexisting steel and method for manufacturing the same20189,766,653'Display and electronic unit'20179,761,472'Container opening/closing device'20179,696,290'Method for fractionating dioxins'20179,488,886'Display unit and electronic apparatus'20169,324,599'Container opening/closing device'20169,282,638'Electrode, electrode material, and electrode formation method'20169,242,424'Display device and electronic apparatus'20169,111,978'Substrate carrier measuring jig, collision preventing jig, and collision preventing method using the collision preventing jig'20159,110,313'Display and electronic unit'20158,974,992'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20158,956,793'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20158,906,517'Organic electroluminescence device'20148,877,412'Image forming apparatus and process cartridge'20148,841,658'Light-emitting element'20148,829,791'Display and electronic unit'20148,808,953'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20148,802,337'Electrophotographic photoreceptor, image forming apparatus, and process cartridge'20148,685,600'Electrophotographic photoreceptor, image forming apparatus and process cartridge'20148,673,524'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20148,664,677'Light-emitting element and organic electroluminescent display device'20148,655,220'Electrophotographic photoreceptor, process cartridge and image forming apparatus'20148,591,163'FOUP opener and operating method thereof'20138,563,971'Light emitting device'20138,524,428'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20138,435,829'Method for producing a light-emitting element'20138,426,847'Light emitting device'20138,334,530'Light-emitting element and method for production thereof'20128,268,521'Electrophotographic photoreceptor, process cartridge, and image forming apparatus'20128,164,191'Semiconductor device'20128,142,969'Electrophotographic photoreceptor, process cartridge and image forming apparatus'20127,980,679'Piezoelectric element, liquid droplet ejecting head, image forming device, and method of manufacturing liquid droplet ejecting head'20117,918,520'Liquid drop expelling head and image forming device provided therewith'20117,763,406'Electrophotographic photoreceptor, process cartidge and electrophotographic apparatus'20107,702,256'Image-forming apparatus including an electrophotographic photoreceptor having an undercoat layer with metal oxide particles and an acceptor compound'20107,655,449'β-fructofuranosidase variants'20107,600,935'Image forming apparatus with gear arrangement for resist roller and cover'20097,595,423'Process for producing trans-1,4-cyclohexanedicarboxylic acid'20097,571,997'Inkjet recording device and inkjet recording head having current plates for regulating ink flow'20097,561,828'Image-forming apparatus including an electrophotographic photoreceptor having an undercoat layer'20097,500,734'Inkjet recording head and inkjet recording device'20097,476,660'Composition and method for organ preservation'20097,451,341'Storage system and communications path control method for storage system'20087,420,086'Process for producing trans-1,4-cyclohexanedicarboxylic acid'20087,317,610'Sheet-shaped capacitor and method for manufacture thereof'20087,297,224'Method of deinking waste paper using cellulase without lowering paper strength and method of evaluating the same'20077,264,652'Filter for collecting chlorinated organic compound'20077,153,574'Surface grafted metal oxide particles and compositions comprising the same'20066,890,374'Filter for sampling chlorinated organic compound'20056,882,544'Printed circuit board, method for producing same and semiconductor device'20056,843,921'Method of separation and recovery of elements from radioactive liquid wastes'20056,773,857'Electrophotographic photoreceptor, processes for producing the same, process cartridge, and electrophotographic apparatus'20046,719,409'Ink jet printer head and piezoelectric actuator for the head'20046,703,777'Adjusting method for cathode position of an electron gun and an electron gun for a cathode ray tube'20046,695,437'Inkjet recording head and method for driving an inkjet recording head'20046,626,525'Actuator for an ink jet recording head'20036,607,981'Method for forming a Cu interconnect pattern'20036,558,483'Cu precipitation strengthened steel'20036,555,416'Chip size package semiconductor device and method of forming the same'20036,555,385'Sampling bottle for chlorinated organic compounds'20036,550,897'Inkjet recording head and recording apparatus using the same'20036,488,355'Ink jet head'20026,479,657'Crystalline 1-kestose and process for preparing the same'20026,450,615'Ink jet printing apparatus and method using a pressure generating device to induce surface waves in an ink meniscus'20026,344,696'Chip size package semiconductor device and method of forming the same'20026,337,201'-fructofuranosidase and its gene, method of isolating -fructofuranosidase gene, system for producing -fructofuranosidase, and -fructofuranosidase variant'20026,326,234'Semiconductor device and method for manufacturing the same'20016,242,852'Electron gun'20016,222,303'Piezoelectric actuator having an array of drive columns'20016,211,606'Piezoelectric actuator and method for manufacturing same'20016,184,400'Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether'20016,100,597'Semiconductor device and method for manufacturing the same'20005,955,230'Electrophotographic photoreceptor having protective layer and method for forming images'19995,910,619'Process for producing .alpha.-olefin oligomers'19995,856,612'Process for producing .alpha.-olefin oligomer'19995,817,844'Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether'19985,750,816'Process for the preparation of .alpha.-olefin oligomers'19985,750,817'Process for producing .alpha.-olefin oligomers and .alpha.-olefin oligomer compositions'19985,750,796'Method of producing an alkylene oxide adduct of a compound having one or more active hydrogen'19985,585,914'Apparatus and method for measuring a temperature of a high temperature liquid contained in a furnace'19965,374,750'Method and manufacturing of fatty acid esters of polyoxyalkylene alkyl ethers'19945,340,639'Printed-wiring board'19945,012,012'Alkoxylation catalyst'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2003Patents assigned to NEC CORP (9)· patent assignee history
1994–2020Based in Tokyo, JP· patent location history
1998–2009Patents assigned to MITSUBISHI CHEM CORP (6)· patent assignee history
1998–2009Based in Kurashiki, JP· patent location history
1999–2019Patents assigned to FUJI XEROX CO LTD (29)· patent assignee history
1999–2010Based in Minami-ashigara, JP· patent location history
2001–2018Patents assigned to SONY CORP (15)· patent assignee history
2001–2019Based in Kanagawa, JP· patent location history
2003–2017Based in Matsuyama, JP· patent location history
2012–2015Patents assigned to NAKAMURA HIROFUMI (19)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJI XEROX CO LTD | 29 | 1999–2019 |
| NAKAMURA HIROFUMIself | 19 | 2012–2015 |
| SONY CORP | 15 | 2001–2018 |
| NEC CORP | 9 | 1994–2003 |
| MITSUBISHI CHEM CORP | 6 | 1998–2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 32 | 2001–2019 |
| Tokyo, JP | 21 | 1994–2020 |
| Minami-ashigara, JP | 6 | 1999–2010 |
| Matsuyama, JP | 4 | 2003–2017 |
| Kurashiki, JP | 4 | 1998–2009 |