Inventor · disambiguated record
Takuya Nagahama
Also filed as: NAGAHAMA TAKUYA
17 granted patents·2 pending applications·47 citations·filing 2002–2020
90Inventor score
Top patents by PatentIndex Score
19 records- 0189US6749954B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Jun 15, 2004·25 cites·10 claims
- 0279US11053749B2Threaded joint for oil well steel pipeJFE STEEL CORP·Filed 2017·Granted Jul 6, 2021·3 cites·2 claims
- 0373US9470345B2Threaded joint for pipesJFE STEEL CORP·Filed 2012·Granted Oct 18, 2016·2 cites·6 claims
- 0465US11549620B2Screw joint for oil well pipeJFE STEEL CORP·Filed 2019·Granted Jan 10, 2023·1 cites·1 claims
- 0565US8991875B2Threaded joint for steel pipesYOSHIKAWA MASAKI·Filed 2012·Granted Mar 31, 2015·4 cites·3 claims
- 0664US9194190B2Threaded joint for pipeSONOBE OSAMU·Filed 2011·Granted Nov 24, 2015·3 cites·13 claims
- 0762US10443765B2Threaded joint for pipesJFE STEEL CORP·Filed 2013·Granted Oct 15, 2019·2 cites·6 claims
- 0860US9709196B2Threaded joint for heavy-walled oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted Jul 18, 2017·1 cites·4 claims
- 0957US10295091B2Threaded joint for tubeJFE STEEL CORP·Filed 2014·Granted May 21, 2019·1 cites·3 claims
- 1056US6682829B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Jan 27, 2004·1 cites·13 claims
- 1155US9982815B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted May 29, 2018·1 cites·1 claims
- 1251US9657873B2Threaded joint for pipesKAWAI TAKAMASA·Filed 2012·Granted May 23, 2017·1 cites·5 claims
- 1349US9982491B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted May 29, 2018·0 cites·1 claims
- 1448US10125554B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted Nov 13, 2018·0 cites·1 claims
- 1547US6723453B2Welded steel pipe having excellent hydroformability and method for making the sameJFE STEEL CORP·Filed 2002·Granted Apr 20, 2004·2 cites·11 claims
- 1646US2015198270A1Threaded joint for pipesJFE STEEL CORP·Filed 2013·Application pending·0 cites
- 1745US10202809B2Threaded joint for steel pipesJFE STEEL CORP·Filed 2013·Granted Feb 12, 2019·0 cites·4 claims
- 1842US11905765B2Threaded joint for pipesJFE STEEL CORP·Filed 2020·Granted Feb 20, 2024·0 cites·12 claims
- 1940US2006218985A1Tube with high dimensional accuracy, and method and device for manufacturing the tubeKENMOCHI KAZUHITO·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →