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Inventor

Hiroshi Chikatsune

Inventor
Handa, JP

Overview

9→
Patents
2015–2019
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.

E21Bprimary
E21BEarth or rock drilling43%
F16LPipes43%
C10MLubricating compositions5%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions5%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges5%
PatentTitleYear
10,443,765Threaded joint for pipes201910,295,091Threaded joint for tube201910,125,554Threaded joint for oil country tubular goods20189,982,491Threaded joint for oil country tubular goods20189,982,815Threaded joint for oil country tubular goods20189,709,196'Threaded joint for heavy-walled oil country tubular goods'20179,657,873'Threaded joint for pipes'20179,470,345'Threaded joint for pipes'20168,991,875'Threaded joint for steel pipes'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015–2019Patents assigned to JFE STEEL CORP (9)· patent assignee history
2015–2017Patents assigned to CHIKATSUNE HIROSHI (2)· patent assignee history
2015–2017Patents assigned to KAWAI TAKAMASA (2)· patent assignee history
2015–2017Patents assigned to NAGAHAMA TAKUYA (2)· patent assignee history
2015–2017Patents assigned to SONOBE OSAMU (2)· patent assignee history
2015–2017Based in Chita, JP· patent location history
2016–2018Based in Tokyo, JP· patent location history
2017–2019Based in Handa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JFE STEEL CORP92015–2019
CHIKATSUNE HIROSHIself22015–2017
KAWAI TAKAMASA22015–2017
NAGAHAMA TAKUYA22015–2017
SONOBE OSAMU22015–2017
Locations
LocationPatentsSpan
Handa, JP42017–2019
Tokyo, JP32016–2018
Chita, JP22015–2017