Inventor · disambiguated record
Masakatsu Ueda
Also filed as: UEDA MASAKATSU
13 granted patents·4 pending applications·226 citations·filing 1993–2009
92Inventor score
Top patents by PatentIndex Score
17 records- 0193US6217676B1Steel for oil well pipe with high corrosion resistance to wet carbon dioxide and seawater, and a seamless oil well pipeSUMITOMO METAL IND·Filed 1999·Granted Apr 17, 2001·52 cites·19 claims
- 0281US6159311AMartensitic stainless steel pipe and method for manufacturing the sameSUMITOMO METAL IND·Filed 2000·Granted Dec 12, 2000·13 cites·10 claims
- 0378US5849111ADuplex stainless steelSUMITOMO METAL IND·Filed 1995·Granted Dec 15, 1998·31 cites·16 claims
- 0475US6129999AHigh-strength welded steel structures having excellent corrosion resistanceSUMITOMO METAL IND·Filed 1996·Granted Oct 10, 2000·36 cites·4 claims
- 0573US6024276AMethod for bonding dual-phase stainless steelSUMITOMO METAL IND·Filed 1998·Granted Feb 15, 2000·38 cites·20 claims
- 0669US5383983AMartensitic stainless steel suitable for use in oil wellsSUMITOMO METAL IND·Filed 1993·Granted Jan 24, 1995·19 cites·20 claims
- 0763US6059175AMethod for joining metallic materials by diffusion bonding and joined structure therebySUMITOMO METAL IND·Filed 1997·Granted May 9, 2000·24 cites·12 claims
- 0858US8157930B2Martensitic stainless steelAMAYA HISASHI·Filed 2004·Granted Apr 17, 2012·3 cites·8 claims
- 0955US8163233B2Martensitic stainless steel for welded structuresAMAYA HISASHI·Filed 2009·Granted Apr 24, 2012·0 cites·8 claims
- 1052US7799149B2Oil country tubular good for expansion in well and manufacturing method thereofSUMITOMO METAL IND·Filed 2008·Granted Sep 21, 2010·0 cites·12 claims
- 1149US2009032246A1Oil country tubular good for expansion in well and duplex stainless steel used for oil country tubular good for expansionTAKABE HIDEKI·Filed 2008·Application pending·0 cites
- 1242US2009162239A1Martensitic stainless steelTAKABE HIDEKI·Filed 2009·Application pending·0 cites
- 1341US9090957B2Martensitic stainless steel oil country tubular goodAMAYA HISASHI·Filed 2004·Granted Jul 28, 2015·0 cites·4 claims
- 1441US2005224143A1High strength martensitic stainless steel excellent in carbon dioxide gas corrosion resistance and sulfide stress-corrosion cracking resistanceTAKABE HIDEKI·Filed 2005·Application pending·0 cites
- 1541US2009158799A1Metal Pipe and Manufacturing Method ThereofTAKEISHI YOSHIAKI·Filed 2006·Application pending·0 cites
- 1638US5660211AGalvanic corrosion resistant insulating pipe having excellent film adhesionSUMITOMO METAL IND·Filed 1993·Granted Aug 26, 1997·6 cites·18 claims
- 1737US5879619AHydrogen sulfide corrosion resistant high-Cr and high-Ni alloysSUMITOMO METAL IND·Filed 1996·Granted Mar 9, 1999·4 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →