Inventor · disambiguated record
Hifumi Nagai
Also filed as: NAGAI HIFUMI
7 granted patents·4 pending applications·29 citations·filing 1991–2010
80Inventor score
Files withNIPPON MINING CO3JX NIPPON MINING & METALS CORP2NIKKO METAL MFG CO LTD2NIPPON MINING AND METALS CO LT1
Top patents by PatentIndex Score
11 records- 0170US7951223B2Method of separating rhodium from platinum and/or palladiumJX NIPPON MINING & METALS CORP·Filed 2009·Granted May 31, 2011·1 cites·4 claims
- 0268US6808825B2Copper alloy foilNIKKO METAL MFG CO LTD·Filed 2002·Granted Oct 26, 2004·16 cites·5 claims
- 0354US2009008840A1Apparatus for removing ruthenium from solution containing platinum group metalNIPPON MINING CO·Filed 2007·Application pending·0 cites
- 0451US6767643B2Copper-alloy foil to be used for laminate sheetNIPPON MINING AND METALS CO LT·Filed 2001·Granted Jul 27, 2004·5 cites·8 claims
- 0549US7938880B2Apparatus for removing ruthenium from solution containing platinum group metalJX NIPPON MINING & METALS CORP·Filed 2010·Granted May 10, 2011·0 cites·2 claims
- 0649US7601198B2Method for producing ammonium hexachlororuthenate and ruthenium powder, as well as ammonium hexachlororuthenateNIPPON MINING CO·Filed 2008·Granted Oct 13, 2009·0 cites·3 claims
- 0746US6939620B2Copper alloy foilNIKKO METAL MFG CO LTD·Filed 2002·Granted Sep 6, 2005·5 cites·28 claims
- 0842US2002155021A1Copper-alloy foil to be used for laminate sheetFiled 2002·Application pending·0 cites
- 0934US5242865ANon-magnetic substrate of magnetic headNIPPON MINING CO·Filed 1991·Granted Sep 7, 1993·2 cites·5 claims
- 1030US2004076832A1Copper alloy foilFiled 2003·Application pending·0 cites
- 1126US2003096082A1Copper alloy foilFiled 2002·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hifumi Nagai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →