Inventor · disambiguated record
Hiroshi Kihira
Also filed as: KIHIRA HIROSHI
19 granted patents·5 pending applications·317 citations·filing 1987–2014
93Inventor score
Files withNIPPON STEEL CORP9NIPPON STEEL & SUMITOMO METAL CORP3KIHIRA HIROSHI2TANAKA KOKI2CENTRAL GLASS CO LTD1
Top patents by PatentIndex Score
24 records- 0187US4806849AMethod and apparatus for diagnosing degradation of coating film on metal materialNIPPON STEEL CORP·Filed 1987·Granted Feb 21, 1989·64 cites·8 claims
- 0286US5691811AMethod of and apparatus for detecting defect of transparent sheet as sheet glassCENTRAL GLASS CO LTD·Filed 1996·Granted Nov 25, 1997·82 cites·8 claims
- 0383US4861453ACorrosion detecting probe for steel buried in concreteNIPPON STEEL CORP·Filed 1987·Granted Aug 29, 1989·54 cites·6 claims
- 0478US6709781B2Separators for solid polymer fuel cells and method for producing same, and solid polymer fuel cellsNIPPON STEEL CORP·Filed 2001·Granted Mar 23, 2004·17 cites·13 claims
- 0576US4800165AMethod of detecting corrosion rate of member of steel materialNIPPON STEEL CORP·Filed 1987·Granted Jan 24, 1989·42 cites·3 claims
- 0675US8845400B2Rotary grinding tool and its production methodIMAI ATSUMI·Filed 2010·Granted Sep 30, 2014·5 cites·10 claims
- 0775US4962360ASensor for electrochemical measurement and method for diagnosing corrosion protective properties of metal surface coating by using the sensorNIPPON STEEL CORP·Filed 1989·Granted Oct 9, 1990·39 cites·11 claims
- 0872US7807281B2Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separatorNIPPON STEEL CORP·Filed 2006·Granted Oct 5, 2010·3 cites·6 claims
- 0966US8182961B2Solid polymer type fuel cell separator and method of production of sameTANAKA KOKI·Filed 2007·Granted May 22, 2012·2 cites·2 claims
- 1060US7231318B2Method for predicting degree of corrosion of weather-resistant steelNIPPON STEEL CORP·Filed 2002·Granted Jun 12, 2007·7 cites·10 claims
- 1159US8603268B2Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of sameTAKAHASHI KAZUHIRO·Filed 2009·Granted Dec 10, 2013·0 cites·13 claims
- 1254US8361676B2Solid polymer type fuel cell separator and method of production of sameNIPPON STEEL CORP·Filed 2011·Granted Jan 29, 2013·0 cites·1 claims
- 1353US6726953B2Method for depositing metal having high corrosion resistance and low contact resistance against carbon on separator for fuel cellSINTOBRATOR LTD·Filed 2000·Granted Apr 27, 2004·2 cites·11 claims
- 1452US10074857B2Titanium or titanium alloy material for fuel cell separator having high contact conductivity with carbon and high durability, fuel cell separator including the same, and manufacturing method thereforNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Sep 11, 2018·0 cites·15 claims
- 1551US8785031B2Polymer electrolyte fuel cell separator made of pure titanium or titanium alloy and method of production of sameKANEKO MICHIO·Filed 2007·Granted Jul 22, 2014·0 cites·1 claims
- 1650US2009304917A1Method for applying highly durable repair-coatingDAINIPPON TORYO KK·Filed 2007·Application pending·0 cites
- 1750US2015325864A1Titanium or titanium alloy for fuel cell separator having high contact conductivity with carbon and high durability, fuel cell separator including the same, and fuel cellNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Application pending·0 cites
- 1848US9947942B2Titanium material or titanium alloy material for fuel cell separator having high contact conductivity with carbon and high durability, fuel cell separator including the same, and fuel cellNIPPON STEEL & SUMITOMO METAL CORP·Filed 2014·Granted Apr 17, 2018·0 cites·7 claims
- 1948US9065081B2Titanium material for solid polymer fuel cell separator use and method of production of sameTANAKA KOKI·Filed 2010·Granted Jun 23, 2015·0 cites·4 claims
- 2045US8304141B2Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separatorKIHIRA HIROSHI·Filed 2010·Granted Nov 6, 2012·0 cites·6 claims
- 2141US2006147784A1Low- contact-resistance interface structure between separator and carbon material for fuel cell, separator and carbon material used therein, and production method for stainless steel separator for fuel cellKIHIRA HIROSHI·Filed 2006·Application pending·0 cites
- 2241US2004048134A1Low-contact-resistance interface structure between separator and carbon material for fuel cell, separator and carbon material used therein, and production method for stainless steel separator for fuel cellFiled 2003·Application pending·0 cites
- 2340US2012064232A1Method of treatment for imparting conductivity to surface of separator-use base member of solid polymer type fuel cellYAMAZAKI KEISUKE·Filed 2010·Application pending·0 cites
- 2436US6703143B2Metal foil excellent in electrical contact stabilityNIPPON STEEL CORP·Filed 2001·Granted Mar 9, 2004·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →