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Inventor

Yasuo Takenaka

Inventor
Tokyo, JP

Overview

7→
Patents
1977–2005
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 7 as inventor

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

E04Bprimary
E04BGeneral building constructions24%
F16FSprings18%
A61LMethods or apparatus for sterilising materials or objects in general6%
B01DSeparation6%
B22FWorking metallic powder6%
C02FTreatment of water, waste water, sewage, or sludge6%
C04BLime, magnesia6%
F16DCouplings for transmitting rotation6%
F16LPipes6%
F25DRefrigerators6%
PatentTitleYear
6,865,896'Storage unit and refrigerator'20055,177,915'Elasto-plastic damper'19935,065,555'Elasto-plastic damper'19914,901,486'Elasto-plastic damper'19904,760,900'Friction brakes'19884,320,011'Oil-containing waste water treating material consisting of modified active carbon'19824,039,297'Heat insulating particles'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1988Patents assigned to JAPAN NATIONAL RAILWAY (2)· patent assignee history
1977Based in Hino, JP· patent location history
1982Patents assigned to MITSUBISHI RAYON CO (1)· patent assignee history
1982Based in Otake, JP· patent location history
1988Patents assigned to JAPAN STEEL WORKS LTD (1)· patent assignee history
1988Based in Kanagawa, JP· patent location history
1990–1993Patents assigned to KAJIMA CORP (3)· patent assignee history
1990–1993Based in Tokyo, JP· patent location history
2005Patents assigned to SHARP KK (1)· patent assignee history
2005Based in Suita, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KAJIMA CORP31990–1993
JAPAN NATIONAL RAILWAY21977–1988
JAPAN STEEL WORKS LTD11988
MITSUBISHI RAYON CO11982
SHARP KK12005
Locations
LocationPatentsSpan
Tokyo, JP31990–1993
Suita, JP12005
Kanagawa, JP11988
Otake, JP11982
Hino, JP11977