Inventor
Tomofumi Yamashita
Inventor
Fujisawa, JP
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Hprimary
F16HGearing27%
Y10TTechnical subjects covered by former us classification16%
G03GElectrography8%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%
H05BElectric heating8%
B21JForging5%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels5%
F16DCouplings for transmitting rotation5%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications5%
B60TVehicle brake control systems or parts thereof3%
PatentTitleYear
9,737,926'Ball screw and manufacturing method of nut for ball screw'20179,685,873'Power supply device, image forming device, and electronic appliance'20178,950,283'Method for manufacturing nut for ball screw and ball screw'20158,809,752'Booster circuit for enhanced induction heating unit, power-supply unit, and image forming apparatus using the same'20148,656,798'Linear actuator'20148,297,142'Actuator'20128,196,486'Ball screw mechanism and assembling method of the same'20127,986,894'Power supply device, fixing device and image forming apparatus'20117,638,925'Power supply device'20097,347,115'Linear actuator'20087,004,882'Toroidal-type continuously variable transmission'20067,004,883'Toroidal-type continuously variable transmission'20066,902,509'Toroidal type continuously variable transmission'20056,592,491'Toroidal type continuously variable transmission'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2017Patents assigned to NSK LTD (10)· patent assignee history
2003–2005Based in Hiratsuka, JP· patent location history
2006Based in Kanagawa, JP· patent location history
2008–2017Based in Fujisawa, JP· patent location history
2009–2017Based in Saga, JP· patent location history
2011–2017Patents assigned to RICOH CO LTD (3)· patent assignee history
2012–2017Patents assigned to YAMASHITA TOMOFUMI (6)· patent assignee history
2012–2015Patents assigned to HARADA TORU (3)· patent assignee history
2012–2015Patents assigned to HASHIMOTO KOJI (2)· patent assignee history
2014Based in Takeo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NSK LTD | 10 | 2003–2017 |
| YAMASHITA TOMOFUMIself | 6 | 2012–2017 |
| HARADA TORU | 3 | 2012–2015 |
| RICOH CO LTD | 3 | 2011–2017 |
| HASHIMOTO KOJI | 2 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fujisawa, JP | 6 | 2008–2017 |
| Saga, JP | 3 | 2009–2017 |
| Kanagawa, JP | 2 | 2006 |
| Hiratsuka, JP | 2 | 2003–2005 |
| Takeo, JP | 1 | 2014 |