Inventor
Tatsuo Izumi
Inventor
Yokkaichi, JP
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H10Bprimary
H10BElectronic memory devices28%
G11CStatic stores20%
H01LSemiconductor devices15%
C04BLime, magnesia9%
H10DInorganic electric semiconductor devices7%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h106%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds4%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%
H04NPictorial communication, e.g. television2%
PatentTitleYear
10,991,431Semiconductor memory device202110,804,290Semiconductor device and method of manufacturing the same202010,593,696Semiconductor memory device and method for manufacturing same202010,529,735Memory device202010,510,417Semiconductor memory device and memory system201910,431,311Semiconductor memory device201910,424,348Control method for memory device201910,332,904Semiconductor memory device and method for manufacturing same20199,224,484'Nonvolatile semiconductor memory device'20159,070,474'Nonvolatile semiconductor memory device'20159,019,581'Image processing apparatus and method'20158,929,144'Nonvolatile semiconductor memory device'20158,867,273'Non-volatile semiconductor memory device and method of writing data therein'20148,867,277'Nonvolatile semiconductor memory device'20148,502,321'Semiconductor device and manufacturing method thereof'20138,497,543'Semiconductor memory device and method for manufacturing same'20138,324,680'Non-volatile semiconductor storage device with laminated vertical memory cell and select transistors'20128,270,212'Semiconductor memory device including alternately arranged contact members'20127,902,023'Method of manufacturing non-volatile semiconductor storage device'20117,825,439'Semiconductor memory'20107,800,163'Non-volatile semiconductor storage device'20106,462,110'Concrete admixture'20025,720,807'Hydraulic composition and process for preparing the same'19985,674,316'Hydraulic composition'19975,256,199'Cement admixture'19934,759,802'Cement dispersion agent'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2002Patents assigned to KAO CORP (5)· patent assignee history
1997–2002Based in Wakayama, JP· patent location history
2010–2015Patents assigned to TOSHIBA KK (12)· patent assignee history
2010–2021Based in Yokohama, JP· patent location history
2012–2015Patents assigned to IZUMI TATSUO (7)· patent assignee history
2012–2013Patents assigned to KAMIGAICHI TAKESHI (3)· patent assignee history
2012–2015Based in Kanagawa, JP· patent location history
2013–2014Based in Tokyo, JP· patent location history
2019–2021Patents assigned to TOSHIBA MEMORY CORP (8)· patent assignee history
2019–2020Based in Yokkaichi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TOSHIBA KK | 12 | 2010–2015 |
| TOSHIBA MEMORY CORP | 8 | 2019–2021 |
| IZUMI TATSUOself | 7 | 2012–2015 |
| KAO CORP | 5 | 1988–2002 |
| KAMIGAICHI TAKESHI | 3 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokkaichi, JP | 7 | 2019–2020 |
| Yokohama, JP | 6 | 2010–2021 |
| Kanagawa, JP | 4 | 2012–2015 |
| Tokyo, JP | 3 | 2013–2014 |
| Wakayama, JP | 3 | 1997–2002 |