Inventor · disambiguated record
Hitoshi Asahi
Also filed as: ASAHI HITOSHI
38 granted patents·6 pending applications·639 citations·filing 1995–2014
98Inventor score
Top patents by PatentIndex Score
44 records- 0194US6782921B1High-strength steel pipe excellent in formability and burst resistanceNIPPON STEEL CORP·Filed 2001·Granted Aug 31, 2004·29 cites·4 claims
- 0293US6264760B1Ultra-high strength, weldable steels with excellent ultra-low temperature toughnessEXXONMOBIL UPSTREAM RES CO·Filed 1998·Granted Jul 24, 2001·67 cites·40 claims
- 0391US8039118B2Welded steel pipe for high strength line pipe superior in low temperature toughness and method of production of the sameNIPPON STEEL CORP·Filed 2007·Granted Oct 18, 2011·9 cites·17 claims
- 0491US6248191B1Method for producing ultra-high strength, weldable steels with superior toughnessEXXONMOBIL UPSTREAM RES CO·Filed 1998·Granted Jun 19, 2001·41 cites·21 claims
- 0590US6224689B1Ultra-high strength, weldable, essentially boron-free steels with superior toughnessEXXONMOBIL UPSTREAM RES CO·Filed 1998·Granted May 1, 2001·37 cites·14 claims
- 0689US6532995B1Super-high-strength line pipe excellent in low temperature toughness and production method thereofNIPPON STEEL CORP·Filed 2000·Granted Mar 18, 2003·28 cites·4 claims
- 0788US6248187B1Corrosion resisting steel and corrosion resisting oil well pipe having high corrosion resistance to carbon dioxide gasNIPPON STEEL CORP·Filed 1999·Granted Jun 19, 2001·44 cites·12 claims
- 0888US6228183B1Ultra-high strength, weldable, boron-containing steels with superior toughnessEXXONMOBIL UPSTREAM RES CO·Filed 1998·Granted May 8, 2001·44 cites·15 claims
- 0988US5798004AWeldable high strength steel having excellent low temperature toughnessNIPPON STEEL CORP·Filed 1996·Granted Aug 25, 1998·45 cites·9 claims
- 1088US5755895AHigh strength line pipe steel having low yield ratio and excellent in low temperature toughnessNIPPON STEEL CORP·Filed 1996·Granted May 26, 1998·114 cites·12 claims
- 1187US7301864B2Objective lens, optical pick-up device, and optical disk deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Nov 27, 2007·17 cites·78 claims
- 1286US8715430B2High strength steel plate and high strength welded pipe excellent in ductile fracture characteristic and methods of production of sameHARA TAKUYA·Filed 2005·Granted May 6, 2014·6 cites·8 claims
- 1385US8974610B2High-strength welded steel pipe and method for producing the sameFUJISHIRO TAISHI·Filed 2011·Granted Mar 10, 2015·4 cites·9 claims
- 1485US7967926B2UOE steel pipe excellent in collapse strength and method of production thereofNIPPON STEEL CORP·Filed 2009·Granted Jun 28, 2011·4 cites·3 claims
- 1584US8920583B2Steel pipe excellent in deformation characteristics and method of producing the sameASAHI HITOSHI·Filed 2008·Granted Dec 30, 2014·6 cites·1 claims
- 1684US8764918B2High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the sameHARA TAKUYA·Filed 2007·Granted Jul 1, 2014·4 cites·12 claims
- 1781US5985053ASteel having improved toughness in welding heat-affected zoneNIPPON STEEL CORP·Filed 1997·Granted Nov 16, 1999·32 cites·3 claims
- 1878US8110292B2High strength steel plate, steel pipe with excellent low temperature toughness, and method of production of sameFUJISHIRO TAISHI·Filed 2009·Granted Feb 7, 2012·4 cites·8 claims
- 1978US7459033B2Oil country tubular goods excellent in collapse characteristics after expansion and method of production thereofNIPPON STEEL CORP·Filed 2003·Granted Dec 2, 2008·10 cites·6 claims
- 2078US5820699AMartensitic stainless steel having excellent hot workability and sulfide stress cracking resistanceNIPPON STEEL CORP·Filed 1995·Granted Oct 13, 1998·21 cites·4 claims
- 2177US7813235B2Objective lens, optical pick-up device, and optical disk devicePANASONIC CORP·Filed 2007·Granted Oct 12, 2010·2 cites·9 claims
- 2277US6866725B2Steel pipe excellent in formability and method of producing the sameNIPPON STEEL CORP·Filed 2001·Granted Mar 15, 2005·10 cites·34 claims
- 2376US9188253B2Oil country tubular goods with dual phase structure and producing method thereofSAWAMURA MITSURU·Filed 2011·Granted Nov 17, 2015·2 cites·20 claims
- 2475US8084144B2High strength thick welded steel pipe for line pipe superior in low temperature toughness and method of production of the sameHARA TAKUYA·Filed 2007·Granted Dec 27, 2011·8 cites·16 claims
- 2574US7892368B2UOE steel pipe excellent in collapse strength and method of production thereofNIPPON STEEL CORP·Filed 2003·Granted Feb 22, 2011·7 cites·5 claims
- 2673US8653400B2High strength welded steel tube superior in hydrogen embrittlement cracking resistance of weld metal and method of production of sameTSURU EIJI·Filed 2006·Granted Feb 18, 2014·3 cites·6 claims
- 2773US7601231B2High-strength steel pipe excellent in low temperature toughness and toughness at weld heat-affected zoneNIPPON STEEL CORP·Filed 2003·Granted Oct 13, 2009·8 cites·7 claims
- 2870US9719615B2High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Aug 1, 2017·0 cites·11 claims
- 2969US8070887B2High-strength steel sheet and high-strength steel pipe excellent in deformability and method for producing the sameASAHI HITOSHI·Filed 2003·Granted Dec 6, 2011·8 cites·3 claims
- 3068US7920443B2Objective lens, optical pick-up device, and optical disk devicePANASONIC CORP·Filed 2010·Granted Apr 5, 2011·1 cites·14 claims
- 3164US7736447B2Steel plates for ultra-high-strength linepipes and ultra-high-strength linepipes having excellent low-temperature toughness and manufacturing methods thereofNIPPON STEEL CORP·Filed 2004·Granted Jun 15, 2010·4 cites·22 claims
- 3262US9050681B2Method of production of electric resistance welded steel pipe and high Si or high Cr electric resistance welded steel pipeHAMATANI HIDEKI·Filed 2008·Granted Jun 9, 2015·5 cites·8 claims
- 3360US8049131B2Ultrahigh strength welded joint and ultrahigh strength welded steel pipe excellent in cold cracking resistance of weld metal, and methods for producing the sameNIPPON STEEL CORP·Filed 2004·Granted Nov 1, 2011·6 cites·2 claims
- 3452US7920442B2Objective lens, optical pick-up device, and optical disk devicePANASONIC CORP·Filed 2010·Granted Apr 5, 2011·0 cites·23 claims
- 3552US2011250471A1Ultrahigh strength welded joint and ultrahigh strength welded steel pipe excellent in cold cracking resistance of weld metal, and methods for producing the sameNIPPON STEEL CORP·Filed 2011·Application pending·0 cites
- 3647US2007193666A1High Strength Dual Phase Steel With Low Yield Ratio, High Toughness and Superior WeldabilityEXXONMOBIL UPSTREAM RES CO·Filed 2007·Application pending·0 cites
- 3746US8815024B2Steel plate or steel pipe with small occurrence of Bauschinger effect and methods of production of sameASAHI HITOSHI·Filed 2005·Granted Aug 26, 2014·0 cites·4 claims
- 3845US8685182B2High-strength steel pipe and producing method thereofNAGAI KENSUKE·Filed 2010·Granted Apr 1, 2014·0 cites·5 claims
- 3945US6517643B1Steel having excellent outer surface SCC resistance for pipelineNIPPON STEEL CORP·Filed 1997·Granted Feb 11, 2003·9 cites·4 claims
- 4043US2009044882A1Oil well pipe for expandable tubular applications excellent in post-expansion toughness and method of manufacturing the sameASAHI HITOSHI·Filed 2006·Application pending·0 cites
- 4143US2009092514A1Steel pipe for high strength line pipe superior in strain aging resistance and steel plate for high strength line pipe and methods of production of the sameASAHI HITOSHI·Filed 2007·Application pending·0 cites
- 4242US2002104592A1High strength steel material for oil well, excellent in sulfide stress cracking resistance, and production method thereofFiled 2001·Application pending·0 cites
- 4341US9126283B2Electric resistance welded oil country tubular goods and manufacturing method of electric resistance welded oil country tubular goodsSAWAMURA MITSURU·Filed 2012·Granted Sep 8, 2015·0 cites·7 claims
- 4436US2006285231A1Optical component and optical pickup deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →