Inventor · disambiguated record
Norikazu Sugaya
Also filed as: SUGAYA NORIKAZU
4 granted patents·2 pending applications·7 citations·filing 2003–2011
65Inventor score
Top patents by PatentIndex Score
6 records- 0159US8182879B2Method for preventing elution of nickel from water-contact instrument of copper alloy by formation of a protective filmSUGAYA NORIKAZU·Filed 2005·Granted May 22, 2012·2 cites·7 claims
- 0259US7368019B2Method for preventing elution of lead and/or nickel from copper alloy piping material such as valve or pipe joint and copper alloy piping material, and fluid for use in cleaning piping materialKITZ CORP·Filed 2003·Granted May 6, 2008·5 cites·9 claims
- 0352US8936048B2Copper and zinc elution preventing method of copper-alloy-made plumbing instrument including valve and pipe joint, copper-alloy-made plumbing instrument using the method, and film-forming agentSUGAYA NORIKAZU·Filed 2011·Granted Jan 20, 2015·0 cites·14 claims
- 0448US2008220281A1Copper alloy plumbing hardware, such as valves and tube couplings, and the treatment method for reducing elution of leadSUGAYA NORIKAZU·Filed 2008·Application pending·0 cites
- 0541US8221556B2Copper alloy plumbing hardware, such as valves and tube couplings, and the treatment method for reducing elution of leadSUGAYA NORIKAZU·Filed 2010·Granted Jul 17, 2012·0 cites·5 claims
- 0640US2010263572A1Method for preventing elution of nickel from water-contact instrument of copper alloy by formation of a protective filmSUGAYA NORIKAZU·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →