LexDanaLexDanabeta
Inventor

Tatsuo Otsuka

Inventor
Tondabayashi, JP

Overview

9→
Patents
1989–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 9 as inventor

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

B62Dprimary
B62DMotor vehicles13%
F16HGearing13%
B23KSoldering or unsoldering8%
F16CShafts8%
F16FSprings8%
Y10TTechnical subjects covered by former us classification8%
B05BSpraying apparatus4%
C04BLime, magnesia4%
C22CAlloys4%
C23CCoating metallic material4%
PatentTitleYear
11,003,130Exposure device and image forming apparatus20216,769,507'Electric power steering apparatus'20046,708,796'Electric power steering apparatus'20046,550,567'Electric power steering apparatus'20035,431,802'Cylinder tube and process for producing same'19954,962,880'Method of forming a heat exchanger with components comprising an aluminum alloy containing reduced amounts of magnesium'19904,957,159'Aluminum heat exchanger provided with fins having hydrophilic coating'19904,852,791'Method for making corrosion resistance heat exchangers'19894,806,436'Substrate for amorphous silicon solar cells'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1995Patents assigned to SHOWA ALUMINUM CORP (3)· patent assignee history
1989–1990Patents assigned to SHOWA ALUMINIUM CO LTD (2)· patent assignee history
1989–1990Based in Sakai, JP· patent location history
1990Based in Tochigi, JP· patent location history
1995Based in Oyama, JP· patent location history
2003–2004Patents assigned to KOYO SEIKO CO (3)· patent assignee history
2003–2004Based in Tondabayashi, JP· patent location history
2021Patents assigned to TOSHIBA TEC KK (1)· patent assignee history
2021Based in Shizuoka-shi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOYO SEIKO CO32003–2004
SHOWA ALUMINUM CORP31989–1995
SHOWA ALUMINIUM CO LTD21989–1990
TOSHIBA TEC KK12021
Locations
LocationPatentsSpan
Tondabayashi, JP32003–2004
Sakai, JP21989–1990
Shizuoka-shi, JP12021
Oyama, JP11995
Tochigi, JP11990