Inventor

Kiyoshi Okubo

Inventor

Maebashi, JP

Overview

1991–2007

Patent span

Performing operations

Primary field (CPC B)

Patents· 28 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

Y10Tprimary

Y10TTechnical subjects covered by former us classification24%

B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels22%

B62DMotor vehicles11%

F16HGearing8%

F01LCyclically operating valves for machines or engines7%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material5%

F16DCouplings for transmitting rotation5%

B21JForging1%

PatentTitleYear

RE039647'Disk for toroidal type continuously variable transmission'2007 7,104,893'Wheel drive unit'2006 7,069,764'Method for manufacturing a hollow rack shaft'2006 6,959,676'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2005 6,898,853'Method for manufacturing a hollow rack shaft'2005 6,845,560'Method for manufacturing a hollow rack shaft'2005 6,782,772'Hollow rack shaft and manufacturing method thereof'2004 6,782,598'Method of manufacturing hollow rack shaft'2004 6,779,271'Method for manufacturing a hollow rack shaft'2004 6,763,739'Hollow rack shaft and manufacturing method thereof'2004 6,672,266'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2004 6,601,555'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2003 6,588,293'Hollow rack shaft'2003 6,588,101'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2003 6,520,888'Loading cam apparatus for toroidal type continuously variable transmission'2003 6,508,215'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2003 6,468,180'Toroidal type continuously variable transmission and method of manufacturing disk for toroidal type continuously variable transmission'2002 6,442,992'Hollow rack shaft and method of manufacturing the same'2002 6,334,416'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2002 6,199,527'Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof'2001 6,176,806'Cam disk for toroidal type continuously variable transmission'2001 6,113,514'Disk for toroidal type continuously variable transmission'2000 6,049,964'Method of making a yoke for universal joint'2000 6,022,047'Universal joint and a yoke therefor for a steering apparatus'2000 5,845,394'Method of manufacturing a yoke for an elastic universal joint'1998 5,511,440'Method of manufacturing a hollow steering shaft and hollow steering shaft'1996 5,461,767'Manufacturing method of metal bellows'1995 5,018,899'Yoke for universal joint and manufacturing method therefor'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to NIPPON SEIKO KK (1)· patent assignee history

1991–2007Based in Maebashi, JP· patent location history

1995–2007Patents assigned to NSK LTD (27)· patent assignee history

2000–2006Based in Gunma, JP· patent location history

2002–2006Based in Maebahshi, JP· patent location history

2004Based in Maebasi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NSK LTD	27	1995–2007
NIPPON SEIKO KK	1	1991

Locations

Location	Patents	Span
Maebashi, JP	16	1991–2007
Maebahshi, JP	8	2002–2006
Gunma, JP	3	2000–2006
Maebasi, JP	1	2004