Inventor · disambiguated record
Takamasa Kawai
Also filed as: KAWAI TAKAMASA
21 granted patents·3 pending applications·25 citations·filing 2007–2022
91Inventor score
Top patents by PatentIndex Score
24 records- 0184US11353144B2Threaded jointJFE STEEL CORP·Filed 2019·Granted Jun 7, 2022·4 cites·3 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
- 0665US8322178B2Method for performing temper rolling on steel strip and method for manufacturing high tensile-strength cold rolled steel sheetKAWAI TAKAMASA·Filed 2007·Granted Dec 4, 2012·2 cites·16 claims
- 0764US9194190B2Threaded joint for pipeSONOBE OSAMU·Filed 2011·Granted Nov 24, 2015·3 cites·13 claims
- 0863US12448581B2Agent, oil country tubular goods, and threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2022·Granted Oct 21, 2025·0 cites·20 claims
- 0962US10443765B2Threaded joint for pipesJFE STEEL CORP·Filed 2013·Granted Oct 15, 2019·2 cites·6 claims
- 1060US9709196B2Threaded joint for heavy-walled oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted Jul 18, 2017·1 cites·4 claims
- 1157US10295091B2Threaded joint for tubeJFE STEEL CORP·Filed 2014·Granted May 21, 2019·1 cites·3 claims
- 1255US9982815B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted May 29, 2018·1 cites·1 claims
- 1354US12312552B2Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goodsJFE STEEL CORP·Filed 2022·Granted May 27, 2025·0 cites·14 claims
- 1451US9657873B2Threaded joint for pipesKAWAI TAKAMASA·Filed 2012·Granted May 23, 2017·1 cites·5 claims
- 1549US9982491B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted May 29, 2018·0 cites·1 claims
- 1648US10125554B2Threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2014·Granted Nov 13, 2018·0 cites·1 claims
- 1748US2010035079A1High-strength cold-rolled steel sheet and method for manufacturing the sameJFE STEEL CORP·Filed 2007·Application pending·0 cites
- 1846US2015198270A1Threaded joint for pipesJFE STEEL CORP·Filed 2013·Application pending·0 cites
- 1945US10202809B2Threaded joint for steel pipesJFE STEEL CORP·Filed 2013·Granted Feb 12, 2019·0 cites·4 claims
- 2044US12510443B2Make-up/break-out evaluation method for threaded joint for oil country tubular goodsJFE STEEL CORP·Filed 2022·Granted Dec 30, 2025·0 cites·20 claims
- 2142US11905765B2Threaded joint for pipesJFE STEEL CORP·Filed 2020·Granted Feb 20, 2024·0 cites·12 claims
- 2239US10900595B2Threaded joint for oil well tubingJFE STEEL CORP·Filed 2016·Granted Jan 26, 2021·0 cites·1 claims
- 2338US10711533B2Threaded pipe jointJFE STEEL CORP·Filed 2016·Granted Jul 14, 2020·0 cites·3 claims
- 2437US2018258709A1Screw joint for pipe (as amended)JFE STEEL CORP·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →