Inventor
Hiroyuki Nagashima
Inventor
Yokohama, JP
Overview
Patents· 108 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography33%
G11CStatic stores32%
H10BElectronic memory devices8%
H10NElectric solid-state devices not otherwise provided for7%
G06FElectric digital data processing6%
H10DInorganic electric semiconductor devices6%
H01LSemiconductor devices2%
C07CAcyclic or carbocyclic compounds1%
C07DHeterocyclic compounds1%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids1%
PatentTitleYear
11,100,985Nonvolatile semiconductor memory device202110,916,312Memory system performing read of nonvolatile semiconductor memory device2021D0888570Spray container202010,373,692Memory system performing read of nonvolatile semiconductor memory device201910,242,735Nonvolatile semiconductor memory device201910,020,063Memory system performing read of nonvolatile semiconductor memory device20189,812,195'Nonvolatile semiconductor memory device'20179,767,913'Memory system performing read of nonvolatile semiconductor memory device'20179,685,236'Memory chip, memory device, and reading method'20179,665,426'Semiconductor device and reading method'20179,543,011'Nonvolatile semiconductor memory device'20179,543,027'Memory chip, memory device, and reading method'20179,524,786'Memory system changing a memory cell read voltage upon detecting a memory cell read error'20169,324,427'Nonvolatile semiconductor memory device'20169,299,426'Nonvolatile semiconductor memory device'2016RE045817'Nonvolatile semiconductor memory device comprising memory cell array having multilayer structure'20159,165,665'Memory system'2015RE045480'Nonvolatile semiconductor memory device and producing method thereof'20158,964,447'Nonvolatile semiconductor memory device'20158,929,140'Memory system in which a read level is changed based on standing time and at least one of a read, write or erase count'20158,891,304'Nonvolatile semiconductor memory device and memory system'20148,842,481'Nonvolatile semiconductor memory device'20148,817,552'Semiconductor memory device'20148,792,278'Non-volatile memory semiconductor storage including contact plug'20148,755,233'Memory system'20148,655,254'Lubricant applicator, image forming apparatus, and method of mounting lubricant applicator'20148,644,072'Three dimensionally stacked memory and the isolation of memory cell layer'20148,612,824'Semiconductor memory device and controlling method'20138,575,590'Nonvolatile semiconductor memory device'20138,575,589'Nonvolatile semiconductor memory device and method of manufacturing the same'20138,565,661'Cleaning device including cleaning mechanism having noise reduction mechanism and image forming apparatus incorporating same'20138,507,889'Nonvolatile semiconductor memory device comprising memory cell array having multilayer structure'20138,477,542'Semiconductor memory device'20138,446,782'Semiconductor memory device'20138,441,040'Semiconductor memory device'20138,391,082'Nonvolatile semiconductor memory device'20138,369,770'Collection container, cleaning unit, and image forming apparatus capable of collecting waste toner efficiently'20138,363,472'Non-volatile semiconductor storage device including contact plug'20138,310,873'Non-volatile semiconductor memory device'20128,300,444'Nonvolatile semiconductor memory device'20128,274,068'Semiconductor integrated circuit device and method of fabricating the same'20128,259,489'Nonvolatile semiconductor memory device generating different write pulses to vary resistances'20128,254,823'Waste toner storage unit and image forming apparatus using same'20128,222,677'Semiconductor memory device and method of manufacturing the same'20128,204,423'Cleaning device with accumulation prevention, process cartridge, and image forming apparatus including same'20128,185,032'Used toner collection device and image forming apparatus'20128,149,609'Nonvolatile semiconductor memory device'20128,090,293'Process cartridge and image forming apparatus employing same'20128,085,585'Semiconductor memory device'20118,081,512'Non-volatile semiconductor memory device'20118,064,272'Semiconductor memory device'20118,044,456'Nonvolatile semiconductor memory device and producing method thereof'20118,041,280'Lubricant applying device, process cartridge, and image forming apparatus'20118,027,188'Semiconductor memory device'20117,965,556'Nonvolatile semiconductor memory'20117,957,203'Nonvolatile semiconductor memory device'20117,953,362'Image forming apparatus, process cartridge, and lubricant applicator'20117,952,931'Nonvolatile semiconductor memory device which realizes “1†write operation by boosting channel potential'20117,953,363'Lubricant applicator and image forming apparatus including same'20117,911,854'Semiconductor memory device'20117,881,116'Nonvolatile semiconductor memory capable of trimming an initial program voltage for each word line'20117,844,198'Electrophotographic photoreceptor, photoreceptor supporting device, imaging device and process cartridge'20107,755,947'Nonvolatile semiconductor memory'20107,688,632'Nonvolatile semiconductor memory capable of trimming an initial program voltage for each word line'20107,680,429'Charging device including charging roller and cleaning roller'20107,643,362'Semiconductor memory device in which redundancy (RD) of adjacent column is automatically repaired'20107,603,053'Image forming apparatus'20097,539,451'Image forming apparatus and toner'20097,493,075'Cleaning device, process cartridge and image forming apparatus'20097,486,569'Nonvolatile semiconductor memory'20097,483,648'Process cartridge and image forming apparatus using the same'20097,477,862'Charged device, cleaning device, process cartridge, toner, and image-forming device that uses these'20097,460,810'Image forming apparatus having a cleaning roller for a charging roller of the apparatus'20087,433,615'Method of and image forming apparatus for controlling a light exposure condition'20087,428,393'Developing device, process cartridge, device unit, and image forming apparatus having a sealing member'20087,400,844'Image forming apparatus and process cartridge with a cleaner for removing toner from an image bearing member'20087,386,257'Imaging apparatus, and toner and process cartridge used in the imaging apparatus'20087,362,466'Image forming apparatus and replaceable part and IC chip for the same'20087,343,132'Image forming apparatus and process cartridge including sealable lubricating device'20087,305,203'Image forming apparatus including a process cartridge formed with a hole'20077,295,796'Image forming apparatus having a temporary toner holding device and a toner collecting device'20077,292,817'Image forming apparatus, process cartridge, and waste toner recovery device'20077,272,342'Image forming apparatus having a detachable cartridge including a photoconductive drum with axis shaft having a minimal rotational eccentricity, and a method of assembling the image forming apparatus'20077,272,354'Cleaning unit and image forming apparatus having multiple cleaning blades'20077,266,324'Charging device, and process cartridge and image forming apparatus using the charging device'20077,242,620'Nonvolatile semiconductor memory device and an operation method thereof'20077,242,615'Non-volatile semiconductor memory device'20077,228,099'Cleaning device for cleaning a surface of an image support body'20077,221,467'Image forming apparatus and replaceable part and integrated circuit chip for the same'20077,218,877'Charging device, and process cartridge and image forming apparatus including the charging device using the same'20077,184,684'Image forming apparatus, process cartridge, and waste toner recovery device'20077,139,504'Charging device, and process cartridge and image forming apparatus using the charging device'20067,136,610'Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself'20067,130,564'Method and apparatus for image forming capable of removing residual toner without using a toner cleaning system, process cartridge for use in the apparatus and toner used for the image forming'20067,110,696'Cleaning unit, process cartridge, and image forming apparatus'20067,110,699'Image forming apparatus and process cartridge for use in the same'20067,062,194'Charging device, and process cartridge and image forming apparatus including the charging device'20067,050,741'Imaging apparatus, and toner and process cartridge used in the imaging apparatus'20067,043,182'Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member'20067,024,133'Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself'20066,993,281'Image forming apparatus and process cartridge including flexible member'20066,975,830'Image forming apparatus, process cartridge, and waste toner recovery device'20056,912,368'Rotary body support structure and image forming apparatus using the same'20056,687,474'Developing apparatus, image formation apparatus, and process cartridge'20045,999,772'Image forming apparatus with support member'19995,287,158'Image forming apparatus with image reading unit'19944,981,992'Process for preparing optically active 3-hydroxybutanoic acid'19914,780,067'Multicylinder rotary compressor'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2017Based in Kanagawa, JP· patent location history
1994–2010Patents assigned to RICOH KK (38)· patent assignee history
1994–2021Based in Yokohama, JP· patent location history
2006–2020Based in Tokyo, JP· patent location history
2007–2017Patents assigned to TOSHIBA KK (48)· patent assignee history
2009–2010Based in Kanagwa, JP· patent location history
2010–2014Patents assigned to RICOH CO LTD (11)· patent assignee history
2011–2015Patents assigned to NAGASHIMA HIROYUKI (30)· patent assignee history
2012–2014Patents assigned to ONO HIROSHI (7)· patent assignee history
2021Based in Yokohama-shi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TOSHIBA KK | 48 | 2007–2017 |
| RICOH KK | 38 | 1994–2010 |
| NAGASHIMA HIROYUKIself | 30 | 2011–2015 |
| RICOH CO LTD | 11 | 2010–2014 |
| ONO HIROSHI | 7 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 71 | 1994–2021 |
| Kanagawa, JP | 30 | 1991–2017 |
| Tokyo, JP | 3 | 2006–2020 |
| Kanagwa, JP | 2 | 2009–2010 |
| Yokohama-shi, JP | 1 | 2021 |