Inventor

KIHIRA HIROSHI

JP19 patents

⚠️ This page may combine multiple inventors who share the name “KIHIRA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KIHIRA HIROSHI

NIPPON STEEL CORP

Method and apparatus for diagnosing degradation of coating film on metal material

Corrosion detecting probe for steel buried in concrete

Method of detecting corrosion rate of member of steel material

Sensor for electrochemical measurement and method for diagnosing corrosion protective properties of metal surface coating by using the sensor

Separators for solid polymer fuel cells and method for producing same, and solid polymer fuel cells

Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separator

Method for predicting degree of corrosion of weather-resistant steel

Metal foil excellent in electrical contact stability

Solid polymer type fuel cell separator and method of production of same

TANAKA KOKI

Solid polymer type fuel cell separator and method of production of same

Titanium material for solid polymer fuel cell separator use and method of production of same

NIPPON STEEL & SUMITOMO METAL CORP

Titanium 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 cell

Titanium 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 therefor

CENTRAL GLASS CO LTD

Method of and apparatus for detecting defect of transparent sheet as sheet glass

IMAI ATSUMI

Rotary grinding tool and its production method

SINTOBRATOR LTD

Method for depositing metal having high corrosion resistance and low contact resistance against carbon on separator for fuel cell

KANEKO MICHIO

Polymer electrolyte fuel cell separator made of pure titanium or titanium alloy and method of production of same

KIHIRA HIROSHI

Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separator

TAKAHASHI KAZUHIRO

Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of same