Inventor · disambiguated record
Rikio Chijiiwa
Also filed as: CHIJIIWA RIKIO
8 granted patents·1 pending application·29 citations·filing 1985–2013
82Inventor score
Top patents by PatentIndex Score
9 records- 0183US8668784B2Steel for welded structure and producing method thereofWATANABE YOSHIYUKI·Filed 2010·Granted Mar 11, 2014·3 cites·5 claims
- 0276US8920713B2Steel for welded structure and producing method thereofWATANABE YOSHIYUKI·Filed 2010·Granted Dec 30, 2014·2 cites·3 claims
- 0371US8361248B2Steel superior in CTOD properties of weld heat-affected zone and method of production of sameNIPPON STEEL CORP·Filed 2008·Granted Jan 29, 2013·2 cites·8 claims
- 0468US7918948B2Method of production of 780 MPa class high strength steel plate excellent in low temperature toughnessNIPPON STEEL CORP·Filed 2009·Granted Apr 5, 2011·1 cites·2 claims
- 0562US9403242B2Steel for weldingFUKUNAGA KAZUHIRO·Filed 2012·Granted Aug 2, 2016·1 cites·8 claims
- 0661US2014065008A1Steel for welded structure and producing method thereofWATANABE YOSHIYUKI·Filed 2013·Application pending·0 cites
- 0748US4790885AMethod of producing high tensile-high toughness steelNIPPON STEEL CORP·Filed 1985·Granted Dec 13, 1988·9 cites·4 claims
- 0844US7857917B2Method of production of steel for welded structures excellent in low temperature toughness of weld heat affected zoneNIPPON STEEL CORP·Filed 2005·Granted Dec 28, 2010·0 cites·3 claims
- 0944US5723089ALine pipe metal arc welded with wire alloyNIPPON STEEL CORP·Filed 1997·Granted Mar 3, 1998·11 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →