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Inventor

Hisashi Hayakawa

Inventor
Iwata, JP

Overview

17→
Patents
1990–2015
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 17 as inventor

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

F16Hprimary
F16HGearing65%
F16FSprings9%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material4%
F01LCyclically operating valves for machines or engines4%
F02BInternal-combustion piston engines4%
F16CShafts4%
F16JPistons4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
9,046,176'Hydraulic auto-tensioner'20158,393,987'Chain tensioner'20137,775,921'Chain tensioner'20107,775,923'Chain tensioner for two-wheeled vehicle engine'20107,677,999'Chain tensioner'20107,559,863'Chain tensioner'20097,527,572'Chain tensioner'20097,037,229'Hydraulic tensioner'20066,935,978'Chain tensioner'20056,530,256'Method and device for expanding tube material'20035,632,474'Compact hydraulic autotensioner with return spring mounted around a sleeve'19975,607,368'Autotensioner'19975,482,262'Hydraulic autotensioner'19964,986,796'Hydraulic autotensioner'19914,950,209'Autotensioner'19904,940,447'Autotensioner for adjusting the tension of a timing belt'19904,904,230'Belt autotensioner'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2015Patents assigned to NTN TOYO BEARING CO LTD (16)· patent assignee history
1990–2013Based in Iwata, JP· patent location history
2003Based in Aichi, JP· patent location history
2005–2015Based in Shizuoka, JP· patent location history
2013–2015Patents assigned to FURUKAWA TASUKU (2)· patent assignee history
2013–2015Patents assigned to HAYAKAWA HISASHI (2)· patent assignee history
2013–2015Patents assigned to SATO SEIJI (2)· patent assignee history
2013Patents assigned to KITANO SATOSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NTN TOYO BEARING CO LTD161990–2015
FURUKAWA TASUKU22013–2015
HAYAKAWA HISASHIself22013–2015
SATO SEIJI22013–2015
KITANO SATOSHI12013
Locations
LocationPatentsSpan
Iwata, JP111990–2013
Shizuoka, JP52005–2015
Aichi, JP12003