Inventor · disambiguated record
Yusaku Tomio
Also filed as: TOMIO YUSAKU
19 granted patents·8 pending applications·12 citations·filing 2012–2022
88Inventor score
Top patents by PatentIndex Score
27 records- 0188US9783876B2Stainless steel for oil wells and stainless steel pipe for oil wellsNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Oct 10, 2017·5 cites·15 claims
- 0287US11834725B2Martensitic stainless steel materialNIPPON STEEL CORP·Filed 2019·Granted Dec 5, 2023·1 cites·4 claims
- 0384US9211601B2Austenitic steel welded jointHIRATA HIROYUKI·Filed 2012·Granted Dec 15, 2015·3 cites·2 claims
- 0482US10266909B2High-strength austenitic stainless steel for high-pressure hydrogen gasOMURA TOMOHIKO·Filed 2012·Granted Apr 23, 2019·2 cites·4 claims
- 0576US10246765B2Martensitic Cr-containing steel and oil country tubular goodsNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Apr 2, 2019·1 cites·16 claims
- 0665US10260125B2High-strength austenitic stainless steel for high-pressure hydrogen gasNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Apr 16, 2019·0 cites·6 claims
- 0765US2025290184A1Duplex stainless steel materialNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 0863US11970759B2Martensitic stainless seamless steel pipeNIPPON STEEL CORP·Filed 2019·Granted Apr 30, 2024·0 cites·17 claims
- 0963US11807910B2Austenitic alloy pipe and method for producing sameNIPPON STEEL CORP·Filed 2018·Granted Nov 7, 2023·0 cites·10 claims
- 1062US12428712B2Martensitic stainless steel materialNIPPON STEEL CORP·Filed 2021·Granted Sep 30, 2025·0 cites·2 claims
- 1162US12241148B2Alloy material and oil-well seamless pipeNIPPON STEEL CORP·Filed 2020·Granted Mar 4, 2025·0 cites·6 claims
- 1261US11965232B2Martensitic stainless seamless steel pipeNIPPON STEEL CORP·Filed 2019·Granted Apr 23, 2024·0 cites·8 claims
- 1359US2024218492A1Electric resistance welded steel pipe for mechanical structural components, and method for producing sameNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 1458US2024018636A1Steel materialNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 1557US12371765B2Seamless steel pipe suitable for use in sour environmentNIPPON STEEL CORP·Filed 2020·Granted Jul 29, 2025·0 cites·17 claims
- 1656US10557574B2Ni—Cr alloy material and seamless oil country tubular goods using the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Feb 11, 2020·0 cites·16 claims
- 1755US2023175107A1Steel materialNIPPON STEEL CORP·Filed 2020·Application pending·0 cites
- 1854US12043885B2Seamless steel pipe and method for producing the sameNIPPON STEEL CORP·Filed 2019·Granted Jul 23, 2024·0 cites·8 claims
- 1954US10597760B2High-strength steel material for oil well and oil well pipesNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Mar 24, 2020·0 cites·6 claims
- 2051US10513761B2High-strength steel material for oil well and oil country tubular goodsNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Dec 24, 2019·0 cites·4 claims
- 2151US2022145438A1Duplex stainless steel materialNIPPON STEEL CORP·Filed 2020·Application pending·0 cites
- 2249US11286545B2Cr-Ni alloy and seamless steel pipe made of Cr-Ni alloyNIPPON STEEL CORP·Filed 2019·Granted Mar 29, 2022·0 cites·8 claims
- 2349US2023114537A1Martensitic stainless steel seamless pipeNIPPON STEEL CORP·Filed 2021·Application pending·0 cites
- 2447US2020332378A1Duplex stainless steel and method for producing duplex stainless steelNIPPON STEEL CORP·Filed 2018·Application pending·0 cites
- 2546US12385118B2Duplex stainless seamless steel pipe and method for producing duplex stainless seamless steel pipeNIPPON STEEL CORP·Filed 2020·Granted Aug 12, 2025·0 cites·8 claims
- 2642US2017349982A1Steel material and expandable oil country tubular goodsNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Application pending·0 cites
- 2739US10378079B2Stainless steel and stainless steel product for oil wellNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Aug 13, 2019·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →