Utsumi; Tomoaki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Utsumi; Tomoaki.The latest application filed is for "switching unit or switching gear".
- Utsumi; Tomoaki - Tokyo JP
- Utsumi; Tomoaki - Hitachi N/A JP
- Utsumi; Tomoaki - Chiyoda-ku JP
- Utsumi, Tomoaki - Hitachi-shi JP
| Patent | Date |
|---|---|
| Switching unit or switching gear Grant 9,437,380 - Yamazaki , et al. September 6, 2 | 2016-09-06 |
| Switching Unit or Switching Gear App 20150102013 - Yamazaki; Miki ; et al. | 2015-04-16 |
| Switch unit and switchgear Grant 8,975,550 - Sugai , et al. March 10, 2 | 2015-03-10 |
| Switch unit and switchgear equipped therewith Grant 8,872,054 - Yamazaki , et al. October 28, 2 | 2014-10-28 |
| Switchgear and method for operating switchgear Grant 8,710,388 - Utsumi , et al. April 29, 2 | 2014-04-29 |
| Vacuum switchgear Grant 8,247,725 - Morita , et al. August 21, 2 | 2012-08-21 |
| Switch Unit and Switchgear App 20120175234 - SUGAI; Daisuke ; et al. | 2012-07-12 |
| Switch Unit And Switchgear Equipped Therewith App 20120132622 - YAMAZAKI; Miki ; et al. | 2012-05-31 |
| Vacuum switchgear Grant 7,902,479 - Tsuchiya , et al. March 8, 2 | 2011-03-08 |
| Switchgear and Method for Operating Switchgear App 20110036811 - Utsumi; Tomoaki ; et al. | 2011-02-17 |
| Vacuum Switchgear App 20100122967 - MORITA; Ayumu ; et al. | 2010-05-20 |
| Vacuum Switchgear App 20070228014 - TSUCHIYA; Kenji ; et al. | 2007-10-04 |
| Vacuum switchgear Grant 7,244,903 - Utsumi , et al. July 17, 2 | 2007-07-17 |
| Gas-insulated switchgear tank Grant 7,193,172 - Rokunohe , et al. March 20, 2 | 2007-03-20 |
| Gas-insulated switchgear tank App 20060186091 - Rokunohe; Toshiaki ; et al. | 2006-08-24 |
| Gas insulating apparatus and method for locating fault point thereof Grant 7,064,267 - Kato , et al. June 20, 2 | 2006-06-20 |
| Gas insulating apparatus and method for locating fault point thereof Grant 7,027,280 - Kato , et al. April 11, 2 | 2006-04-11 |
| Vacuum switchgear App 20050173143 - Utsumi, Tomoaki ; et al. | 2005-08-11 |
| Gas insulating apparatus and method for locating fault point thereof App 20050135028 - Kato, Tatsuro ; et al. | 2005-06-23 |
| Gas insulating apparatus and method for locating fault point thereof App 20050135029 - Kato, Tatsuro ; et al. | 2005-06-23 |
| Vacuum Switchgear App 20050103514 - Utsumi, Tomoaki ; et al. | 2005-05-19 |
| Vacuum switchgear Grant 6,884,940 - Utsumi , et al. April 26, 2 | 2005-04-26 |
| Gas-insulated switchgear tank App 20050056617 - Rokunohe, Toshiaki ; et al. | 2005-03-17 |
| Gas insulating apparatus and method for locating fault point thereof Grant 6,853,528 - Kato , et al. February 8, 2 | 2005-02-08 |
| Gas insulated device and failure rating method Grant 6,850,399 - Kato , et al. February 1, 2 | 2005-02-01 |
| Gas insulating apparatus and method for locating fault point thereof App 20030112569 - Kato, Tatsuro ; et al. | 2003-06-19 |
| Power apparatus and method of location of a fault in a power apparatus on the basis of attenuation coefficients of electromagnetic coefficients of fault generated electromagnetic waves Grant 5,256,976 - Ishikawa , et al. October 26, 1 | 1993-10-26 |
| Method and apparatus for locating an abnormality in a gas-insulated electric device Grant 5,146,170 - Ishikawa , et al. September 8, 1 | 1992-09-08 |
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