Inventor · disambiguated record
Shigeo Nagasaku
Also filed as: NAGASAKU SHIGEO
19 granted patents·4 pending applications·444 citations·filing 1990–2012
95Inventor score
Top patents by PatentIndex Score
23 records- 0194US6659509B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2003·Granted Dec 9, 2003·61 cites·13 claims
- 0293US6869111B2Lubricating coating composition suitable for lubrication of a threaded jointSUMITOMO METAL IND·Filed 2002·Granted Mar 22, 2005·44 cites·17 claims
- 0392US7494159B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2007·Granted Feb 24, 2009·28 cites·14 claims
- 0490US8038179B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2010·Granted Oct 18, 2011·13 cites·20 claims
- 0588US7360798B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2004·Granted Apr 22, 2008·30 cites·9 claims
- 0686US8857857B2Threaded joint for steel pipesGOTO KUNIO·Filed 2009·Granted Oct 14, 2014·8 cites·9 claims
- 0785US7740285B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2008·Granted Jun 22, 2010·5 cites·8 claims
- 0885US5419595AThreaded joint for oil well pipesSUMITOMO METAL IND·Filed 1994·Granted May 30, 1995·92 cites·3 claims
- 0983US5137310AAssembly arrangement using frustoconical screwthreads for tubesVALLOUREC IND·Filed 1990·Granted Aug 11, 1992·92 cites·9 claims
- 1078US8622091B2Protector for tubular threaded jointYAMAMOTO YASUHIRO·Filed 2008·Granted Jan 7, 2014·4 cites·14 claims
- 1175US8276946B2Threaded joint for steel tubesKIMOTO MASANARI·Filed 2009·Granted Oct 2, 2012·3 cites·12 claims
- 1268US8091425B2Ultrasonic testing method of threaded joint of pipes or tubesHOSHINO IKUJI·Filed 2007·Granted Jan 10, 2012·3 cites·3 claims
- 1367US7997627B2Threaded joint for steel pipesSUMITOMO METAL IND·Filed 2005·Granted Aug 16, 2011·5 cites·21 claims
- 1464US8113055B2Method for evaluating fastening state of threaded joint of pipes or tubes and method for fastening threaded joint of pipes or tubes using the methodHOSHINO IKUJI·Filed 2007·Granted Feb 14, 2012·2 cites·5 claims
- 1562US9829127B2Threaded joint for steel pipesSUGINO MASAAKI·Filed 2012·Granted Nov 28, 2017·2 cites·5 claims
- 1658US5649725AThread joint for tubeSUMITOMO METAL IND·Filed 1995·Granted Jul 22, 1997·42 cites·38 claims
- 1754US6698802B2Pipe jointSUMITOMO METAL IND·Filed 2002·Granted Mar 2, 2004·6 cites·5 claims
- 1843US2004195825A1Threaded joint for steel pipesFiled 2003·Application pending·0 cites
- 1940US6755444B2Slim-type threaded joint for oil well pipesSUMITOMO METAL IND·Filed 2002·Granted Jun 29, 2004·4 cites·11 claims
- 2039US2007069517A1Threaded pipe and pipe joint and method of useNAGASAKU SHIGEO·Filed 2006·Application pending·0 cites
- 2136US2003102669A1Threaded joint for an oil well pipeFiled 2002·Application pending·0 cites
- 2232US2003132633A1Joint with tapered threadsFiled 2002·Application pending·0 cites
- 2330US8800381B2Test apparatus for a threaded joint for oil country tubular goodsAKAMATSU CHIAKI·Filed 2012·Granted Aug 12, 2014·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →