Inventor
Takuya Nagahama
Inventor
Handa, JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling31%
F16LPipes31%
C21DModifying the physical structure of ferrous metals8%
C22CAlloys8%
Y10TTechnical subjects covered by former us classification8%
B21BRolling of metal3%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling3%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material3%
C10MLubricating compositions3%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions3%
PatentTitleYear
11,053,749Threaded joint for oil well steel pipe202110,443,765Threaded joint for pipes201910,295,091Threaded joint for tube201910,202,809Threaded joint for steel pipes201910,125,554Threaded joint for oil country tubular goods20189,982,815Threaded joint for oil country tubular goods20189,982,491Threaded 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'20169,194,190'Threaded joint for pipe'20158,991,875'Threaded joint for steel pipes'20156,749,954'Welded steel pipe having excellent hydroformability and method for making the same'20046,723,453'Welded steel pipe having excellent hydroformability and method for making the same'20046,682,829'Welded steel pipe having excellent hydroformability and method for making the same'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2021Patents assigned to JFE STEEL CORP (15)· patent assignee history
2004–2019Based in Handa, JP· patent location history
2004–2015Based in Aichi, JP· patent location history
2015–2017Patents assigned to KAWAI TAKAMASA (3)· patent assignee history
2015–2017Patents assigned to NAGAHAMA TAKUYA (3)· patent assignee history
2015–2017Patents assigned to SONOBE OSAMU (3)· patent assignee history
2015–2017Patents assigned to TAKAHASHI KAZUNARI (3)· patent assignee history
2015–2019Based in Chita, JP· patent location history
2016–2021Based in Tokyo, JP· patent location history
2017Based in Houston, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| JFE STEEL CORP | 15 | 2004–2021 |
| KAWAI TAKAMASA | 3 | 2015–2017 |
| NAGAHAMA TAKUYAself | 3 | 2015–2017 |
| SONOBE OSAMU | 3 | 2015–2017 |
| TAKAHASHI KAZUNARI | 3 | 2015–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Handa, JP | 5 | 2004–2019 |
| Tokyo, JP | 4 | 2016–2021 |
| Chita, JP | 3 | 2015–2019 |
| Aichi, JP | 2 | 2004–2015 |
| Houston, Texas, US | 1 | 2017 |