Assignee
SANGO CO LTD
JP·59 granted patents·5 pending applications·897 citations·filing 1974–2024
Top patents by PatentIndex Score
64 records- 0196US6216512B1Method and apparatus for forming a processed portion of a workpieceSANGO CO LTD·Filed 2000·Granted Apr 17, 2001·51 cites·20 claims
- 0295US6233993B1Method and apparatus for forming a processed portion of a workpieceSANGO CO LTD·Filed 2000·Granted May 22, 2001·43 cites·21 claims
- 0394US6386010B1Spinning processing method and apparatus thereforSANGO CO LTD·Filed 1999·Granted May 14, 2002·53 cites·11 claims
- 0494US6381843B1Method of producing a catalytic converterSANGO CO LTD·Filed 2000·Granted May 7, 2002·68 cites·13 claims
- 0593US7527126B2Exhaust apparatus of an internal combustion engineSANGO CO LTD·Filed 2005·Granted May 5, 2009·31 cites·12 claims
- 0693US6769281B2Method and apparatus of producing a columnar member containerSANGO CO LTD·Filed 2003·Granted Aug 3, 2004·60 cites·19 claims
- 0788US5713611AConnection of a plate and tubular membersSANGO CO LTD·Filed 1996·Granted Feb 3, 1998·73 cites·16 claims
- 0887US6530256B1Method and device for expanding tube materialSANGO CO LTD·Filed 2000·Granted Mar 11, 2003·22 cites·33 claims
- 0987US6067833AMethod and apparatus for forming an end portion of a cylindrical memberSANGO CO LTD·Filed 1998·Granted May 30, 2000·36 cites·21 claims
- 1085US6018972AMethod and apparatus for forming an end portion of a cylindrical memberSANGO CO LTD·Filed 1998·Granted Feb 1, 2000·33 cites·16 claims
- 1182US6834245B2Method and apparatus for monitoring the status of manufacturing productsSANGO CO LTD·Filed 2001·Granted Dec 21, 2004·47 cites·12 claims
- 1281US9901968B2Pipe bend die unit, and pipe bending apparatus having the unitSANGO CO LTD·Filed 2015·Granted Feb 27, 2018·3 cites·19 claims
- 1380US10684008B2Evaporation type burnerSANGO CO LTD·Filed 2016·Granted Jun 16, 2020·5 cites·14 claims
- 1480US7505504B2Laser processing deviceSANGO CO LTD·Filed 2005·Granted Mar 17, 2009·11 cites·12 claims
- 1579US7111392B2Method of producing a fragile substrate containerSANGO CO LTD·Filed 2003·Granted Sep 26, 2006·23 cites·11 claims
- 1679US6591498B2Method of producing a catalytic converterSANGO CO LTD·Filed 2002·Granted Jul 15, 2003·27 cites·13 claims
- 1778US10675667B2Pipe bend die unitSANGO CO LTD·Filed 2018·Granted Jun 9, 2020·2 cites·20 claims
- 1876US7174634B2Method for producing a fluid treatment device having a honeycomb memberSANGO CO LTD·Filed 2004·Granted Feb 13, 2007·17 cites·2 claims
- 1968US10213819B2Press forming methodSANGO CO LTD·Filed 2016·Granted Feb 26, 2019·1 cites·4 claims
- 2068US7963138B2Method and apparatus for forming a changed diameter portion of a workpieceSANGO CO LTD·Filed 2005·Granted Jun 21, 2011·3 cites·13 claims
- 2168US7740105B2Outer tube of exhaust system partSANGO CO LTD·Filed 2005·Granted Jun 22, 2010·6 cites·7 claims
- 2268USD452694SCatalytic converterSANGO CO LTD·Filed 1999·Granted Jan 1, 2002·14 cites·1 claims
- 2367US4971166AMufflerSANGO CO LTD·Filed 1989·Granted Nov 20, 1990·41 cites·8 claims
- 2464US6536315B1Spinning deviceSANGO CO LTD·Filed 2000·Granted Mar 25, 2003·13 cites·12 claims
- 2563US7866044B2Method of producing metal tubular memberSANGO CO LTD·Filed 2005·Granted Jan 11, 2011·4 cites·10 claims
- 2663US7174635B2Method for producing a columnar member containerSANGO CO LTD·Filed 2004·Granted Feb 13, 2007·12 cites·10 claims
- 2761US9614215B2Negative electrode material for lithium secondary battery and method for manufacturing the sameSANGO CO LTD·Filed 2014·Granted Apr 4, 2017·1 cites·4 claims
- 2860US6027146AMerging pipe and method of manufacturing sameSANGO CO LTD·Filed 1997·Granted Feb 22, 2000·30 cites·10 claims
- 2959US9809092B2Door impact beam for vehicleSANGO CO LTD·Filed 2017·Granted Nov 7, 2017·1 cites·2 claims
- 3058US5943891ASilencer shell forming apparatusSANGO CO LTD·Filed 1997·Granted Aug 31, 1999·13 cites·5 claims
- 3158US2025135518A1Extrusion molding method of differential thickness pipe and extrusion molding apparatus of differential thickness pipeSANGO CO LTD·Filed 2024·Application pending·0 cites
- 3257US6347539B1Bending method for pipe materialSANGO CO LTD·Filed 2000·Granted Feb 19, 2002·7 cites·10 claims
- 3355US9520595B2Negative electrode for lithium-ion secondary cell and method for manufacturing sameSANGO CO LTD·Filed 2013·Granted Dec 13, 2016·0 cites·20 claims
- 3454USD879153SExhaust heat recovery apparatus for automobilesSANGO CO LTD·Filed 2018·Granted Mar 24, 2020·8 cites·1 claims
- 3553US11384678B2Heat insulating cover for exhaust deviceSANGO CO LTD·Filed 2018·Granted Jul 12, 2022·0 cites·1 claims
- 3653US6766675B2Spindle mechanismSANGO CO LTD·Filed 2002·Granted Jul 27, 2004·5 cites·8 claims
- 3751US10662490B2Hardening apparatus for a long member, and a hardening method for a long memberSANGO CO LTD·Filed 2016·Granted May 26, 2020·0 cites·9 claims
- 3851US5259300AStirrer for food and cooking methodSANGO CO LTD·Filed 1992·Granted Nov 9, 1993·19 cites·7 claims
- 3950US6942838B1Emission system part and method of manufacturing the partSANGO CO LTD·Filed 1999·Granted Sep 13, 2005·10 cites·4 claims
- 4050US6295856B1Spindle mechanism of drawerSANGO CO LTD·Filed 1999·Granted Oct 2, 2001·14 cites·11 claims
- 4149US6216743B1Bellows tubeSANGO CO LTD·Filed 2000·Granted Apr 17, 2001·8 cites·12 claims
- 4249US3935775AIron piece shearing machineSANGO CO LTD·Filed 1974·Granted Feb 3, 1976·9 cites·6 claims
- 4346US6012315AMethod of manufacturing pipeSANGO CO LTD·Filed 1997·Granted Jan 11, 2000·9 cites·3 claims
- 4445US2007033804A1Method for producing a fluid treatment device having a honeycomb memberSANGO CO LTD·Filed 2006·Application pending·0 cites
- 4545US2007181393A1Impact absorbing device of vehicleSANGO CO LTD·Filed 2005·Application pending·0 cites
- 4644US9610626B2Pipe bend die unit, and pipe bending apparatus having the unitSANGO CO LTD·Filed 2015·Granted Apr 4, 2017·0 cites·13 claims
- 4744US7505858B2Method for analyzing tone quality of exhaust soundSANGO CO LTD·Filed 2005·Granted Mar 17, 2009·0 cites·2 claims
- 4844US6223434B1Muffler and its manufacturing methodSANGO CO LTD·Filed 1998·Granted May 1, 2001·14 cites·4 claims
- 4944US6000115AShell lock seaming machineSANGO CO LTD·Filed 1997·Granted Dec 14, 1999·5 cites·3 claims
- 5042US6427802B1MufflerSANGO CO LTD·Filed 1999·Granted Aug 6, 2002·15 cites·13 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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