Inventor
Shigeru Tsukada
Inventor
Kanagawa, JP
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography58%
G06FElectric digital data processing11%
H04NPictorial communication, e.g. television11%
B41JTypewriters5%
B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers5%
E03FSewers5%
G11BInformation storage based on relative movement between record carrier and transducer5%
PatentTitleYear
10,710,768Pallet20209,850,649Vortex flow type water surface control device for draining device20179,037,030'Power control system and power control method'20158,576,508'Tape library system and method of diagnosing tape cartridges'20138,447,201'Image forming apparatus for controlling image density'20138,392,652'Virtual tape system'20138,370,682'Virtual tape system take-over-controlled by standby server computer'20137,983,578'Image forming device with a manual darkness adjusting section'20117,751,731'Image forming apparatus having a toner concentration sensor'20107,623,799'Image forming apparatus'20097,539,426'Image forming apparatus having a toner concentration sensor'20097,536,116'Image forming apparatus with a plurality of development devices'20097,400,838'Image forming apparatus with toner concentration detection unit'20087,389,059'Image forming apparatus having a toner concentration sensor'20087,366,430'Rotary-type developing device and image forming apparatus'20085,991,558'Image forming apparatus that control the reflected light detected by an optical scanner in response to a gradation area percentage of a toner patch'19994,958,239'Method of gradation and selection of micro picture elements therefor in a picture display'19904,892,371'Semiconductor laser array light source and scanner'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2020Patents assigned to FUJI XEROX CO LTD (14)· patent assignee history
1990–2020Based in Kanagawa, JP· patent location history
1999–2011Based in Ebina, JP· patent location history
2013–2017Patents assigned to TSUKADA SHIGERU (5)· patent assignee history
2013Patents assigned to FUJITSU LTD (3)· patent assignee history
2013Patents assigned to HIRASHIMA NOBUYUKI (3)· patent assignee history
2013Patents assigned to YAMATO TAKAAKI (3)· patent assignee history
2013Based in Kawasaki, JP· patent location history
2017Based in Saitama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJI XEROX CO LTD | 14 | 1990–2020 |
| TSUKADA SHIGERUself | 5 | 2013–2017 |
| FUJITSU LTD | 3 | 2013 |
| HIRASHIMA NOBUYUKI | 3 | 2013 |
| YAMATO TAKAAKI | 3 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 9 | 1990–2020 |
| Ebina, JP | 5 | 1999–2011 |
| Kawasaki, JP | 3 | 2013 |
| Saitama, JP | 1 | 2017 |