Inventor
Shuzo Hirakushi
Inventor
Nara, JP
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B62Dprimary
B62DMotor vehicles33%
F16DCouplings for transmitting rotation15%
Y10TTechnical subjects covered by former us classification15%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles13%
F16FSprings7%
F16HGearing7%
F16CShafts4%
B60GVehicle suspension arrangements2%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for2%
B60TVehicle brake control systems or parts thereof2%
PatentTitleYear
7,568,550'Worm support device and power assist unit having the same'20097,353,727'Vehicular steering apparatus'20087,328,631'Vehicular steering apparatus'20087,311,334'Shock absorbing type steering device for vehicles and method of producing the same'20077,172,361'Extendable shaft'20077,044,503'Collapsible telescopic steering apparatus'20066,990,874'Collapsible telescopic steering apparatus'20066,981,430'Vehicular steering apparatus'20066,776,253'Electric power steering apparatus'20045,388,679'Torque transmission device of a four-wheel drive vehicle'19955,375,687'Torque transmission device of a four-wheel drive vehicle'19945,154,252'Power transmission apparatus for vehicle'19925,074,825'Hydraulic transmission coupling apparatus'19914,919,248'Drive coupling unit'19904,850,447'Power transmission apparatus for a vehicle'19894,784,235'Oil pressure reaction control valve for power steering apparatus'19884,775,022'Apparatus for controlling steering power in power steering system'19884,718,514'Steering force control device for power steering apparatus'19884,640,380'Apparatus for controlling a steering force of a handle in automobiles'19874,637,484'Hydraulic control apparatus for a power steering device'19874,194,411'Steering column support assembly'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–2008Patents assigned to KOYO SEIKO CO (17)· patent assignee history
1980Based in Yao, JP· patent location history
1987–1988Patents assigned to KOYO JIDOKI (3)· patent assignee history
1987–2008Based in Nara, JP· patent location history
1988Based in Kashihara, JP· patent location history
1989–2009Based in Osaka, JP· patent location history
1990Patents assigned to MITSUBISHI MOTORS CORP (1)· patent assignee history
1992–1995Based in Uda-gun, JP· patent location history
2006Patents assigned to HIRUTA KOGYO CO LTD (1)· patent assignee history
2009Patents assigned to JTEKT CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOYO SEIKO CO | 17 | 1980–2008 |
| KOYO JIDOKI | 3 | 1987–1988 |
| HIRUTA KOGYO CO LTD | 1 | 2006 |
| JTEKT CORP | 1 | 2009 |
| MITSUBISHI MOTORS CORP | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nara, JP | 12 | 1987–2008 |
| Osaka, JP | 4 | 1989–2009 |
| Uda-gun, JP | 3 | 1992–1995 |
| Kashihara, JP | 1 | 1988 |
| Yao, JP | 1 | 1980 |