Patent application number | Description | Published |
20110032537 | 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 - The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 μm, having a 10-point mean roughness (Rz) of 3 to 20 μm, having an average spacing of surface relief shapes (Sm) of 300 μm or less, having values of a warp rate and twist rate of a separator of 0.1 or less, and having a contact resistance value with respect to carbon paper of 15 mωcm | 02-10-2011 |
20120034372 | SOLID POLYMER TYPE FUEL CELL SEPARATOR AND METHOD OF PRODUCTION OF SAME - The present invention provides a method of production of a separator for a solid polymer type fuel cell characterized by shaping a substrate comprised of stainless steel, titanium, or a titanium alloy and then spraying the substrate surface with superhard core particles comprised of conductive compound particles of an average particle size of 0.01 to 20 μm mixed with a coating material and coated on their surfaces under conditions of a spray pressure of 0.4 MPa or less and a spray amount per cm | 02-09-2012 |
Patent application number | Description | Published |
20090197143 | POLYMER ELECTROLYTE FUEL CELL SEPARATOR MADE OF PURE TITANIUM OR TITANIUM ALLOY AND METHOD OF PRODUCTION OF SAME - The present invention provides a polymer electrolyte fuel cell separator made of pure titanium or a titanium alloy superior in contact resistance with carbon paper and a method of production of the same, that is, a separator having a surface layer part to which conductive compound particles are affixed, characterized in that the surface oxide has a thickness of 3 to 15 nm in range, an average carbon concentration in a range from an outermost surface, including the oxide layer, to a depth of 100 nm is 0.02 to 6 at %, and the conductive compound particles have an average particle size of 0.01 to 20 μm. Further, the method of production of the present invention is characterized by forming, blast treating a surface of the formed article by particles comprised of conductive compound particles of an average particle size of 0.01 to 20 μm covering a surface of superhard core particles, impregnating it by a nitric acid aqueous solution of a concentration of 15 to 71 mass % and a temperature of 40 to 100° C. for 30 seconds to 180 minutes by spraying or dipping, then washing it. | 08-06-2009 |
20110177430 | Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of same - A titanium material for a solid polymer fuel cell separator having a low contact resistance and a method of production of the same, the titanium material having at its surface a surface layer structure in which particles of a Ti compound containing either C or N are dispersed, the particles of Ti compound being covered by titanium oxide and/or metal Ti, characterized in that, when analyzed from the surface by XPS, a Ti2p spectrum of TiO | 07-21-2011 |
20120064232 | Method of treatment for imparting conductivity to surface of separator-use base member of solid polymer type fuel cell - The present invention provides a method of treatment for imparting conductivity to a surface of a separator-use base member resulting in little distortion and superior conductive performance for a separator-use base member of a solid polymer type fuel cell made of any of a sheet of stainless steel, titanium, or titanium alloy, comprising a step of spray coating and drying on the surface of the separator-use base member a suspension prepared by mixing conductive compound particles | 03-15-2012 |
20150147678 | 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 - [Object] To provide a titanium or titanium alloy material for a separator of a polymer electrolyte fuel cell having high contact conductivity with carbon and high durability. | 05-28-2015 |
20150280251 | 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 - [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. [Solution] Provided is a titanium or titanium alloy material for a fuel cell separator having a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. The present invention has high usability in the cell manufacturing industry. | 10-01-2015 |
20150325864 | TITANIUM OR TITANIUM ALLOY FOR FUEL CELL SEPARATOR HAVING HIGH CONTACT CONDUCTIVITY WITH CARBON AND HIGH DURABILITY, FUEL CELL SEPARATOR INCLUDING THE SAME, AND FUEL CELL - [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. | 11-12-2015 |
Patent application number | Description | Published |
20100150013 | CALIBRATION METHOD, COMMUNICATION SYSTEM, FREQUENCY CONTROL METHOD, AND COMMUNICATION DEVICE - A calibration method according to the present invention includes a step of first channel estimating for transmitting a pilot signal from a first antenna and receiving the pilot signal at a second antenna different from the first antenna to calculate a first channel estimation value; a step of second channel estimating for transmitting a plot signal from the second antenna and receiving the pilot signal at the first antenna to calculate a second channel estimation value; and a step of correction coefficient calculating for calculating, by using the first and second channel estimation values, a correction coefficient. | 06-17-2010 |
20110206155 | COMMUNICATION APPARATUS AND COMMUNICATION SYSTEM - A communication apparatus that can suppress an increase in circuit size and reduce influence of interference, includes reception array antenna elements, a reception DBF network that generates a reception beam signal for forming M reception beams using a reception signal, and reception FBs that generate frequency split reception beam signals obtained by frequency-splitting the reception beam signal. The communication apparatus includes an interference-source detecting unit that stores, for each reception beam, an interference candidate beam area estimated based on an initial reception beam characteristic, calculates, based on the frequency split reception beam signals, a reception spectrum, and calculates, based on the reception spectrum and a reception spectrum of a reception beam to the interference candidate beam area, an interference source area. The reception DFB network generates a reception beam signal to perform null formation in the direction of the interference source area. | 08-25-2011 |
Patent application number | Description | Published |
20150261109 | ELECTROPHOTOGRAPHIC TONER USING BIOPLASTIC AND METHOD OF PRODUCING THE SAME - An electrophotographic toner having good grindability, and excellent fixability and durability, and a method of producing the same are provided. The electrophotographic toner includes an amorphous bioplastic having a weight average molecular weight (Mw) of 30,000 to 100,000, and at least one of a phenol resin and a terpene phenol resin as a grinding aid. | 09-17-2015 |
20150268575 | ELECTROPHOTOGRAPHIC TONER USING BIOPLASTIC AND METHOD OF PRODUCING THE SAME - An electrophotographic toner having good grindability, a wide fixing temperature range and excellent durability, and a method of producing the same are provided. The electrophotographic toner includes, as a binder resin, an amorphous bioplastic having a number average molecular weight (Mn) of 5,000 to 40,000, a weight average molecular weight (Mw) of 20,000 to 60,000, and a ratio of Mw/Mn of 1.4 or more. | 09-24-2015 |
Patent application number | Description | Published |
20100315471 | INKJET PRINTER HEAD - An inkjet printer head includes a nozzle plate having nozzles for jetting ink; a flow path plate having flow paths for communicating with the nozzles, each of the flow paths including a pressure chamber and a resistance part having a smaller cross-sectional area than the pressure chamber, wherein piezoelectric elements having smaller horizontal areas than the flow paths are laminated on the flow path plate; and a common liquid chamber configured to guide the ink from an opening to the pressure chamber. The common liquid chamber is formed by a first member and a second member. The first member forms a top part of the common liquid chamber, and the second member forms a side surface and a bottom surface of a bottom part of the common liquid chamber by adhering to an outer wall of the first member and to an ink jetting surface of the nozzle plate. | 12-16-2010 |
20120026249 | THIN-FILM FORMING APPARATUS, THIN-FILM FORMING METHOD, PIEZOELECTRIC-ELEMENT FORMING METHOD, DROPLET DISCHARGING HEAD, AND INK-JET RECORDING APPARATUS - A thin-film forming apparatus for forming a thin film on a substrate by using an ink-jet method includes an ink applying unit that applies an ink drop for thin-film formation to a predetermined area on a surface of the substrate; at least one laser light source for heating the ink drop thereby forming a thin film; and a laser-light irradiating unit that irradiates, with a laser light from the laser light source, a first spot positioned on a back side of the predetermined area of the substrate to which the ink drop has been applied. | 02-02-2012 |
20120038712 | METHOD FOR PRODUCING ELECTROMECHANICAL TRANSDUCER, ELECTROMECHANICAL TRANSDUCER PRODUCED BY THE METHOD, LIQUID-DROPLET JETTING HEAD, AND LIQUID-DROPLET JETTING APPARATUS - A method of producing an electromechanical transducer includes a first step of partially modifying a surface of a first electrode; a second step of applying a sol-gel liquid including a metal composite oxide to a predetermined area of the partially-modified surface of the first electrode; a third step of performing drying, thermal decomposition, and crystallization on the applied sol-gel liquid to form an electromechanical transduction film; a fourth step of repeating the first, second, and third steps to obtain the electromechanical transduction film with a desired thickness; and a fifth step of forming a second electrode on the electromechanical transduction film. | 02-16-2012 |
20130002767 | ELECTROMECHANICAL TRANSDUCER ELEMENT, DROPLET DISCHARGE HEAD, AND DROPLET DISCHARGE DEVICE - Disclosed is an electromechanical transducer element that includes an electromechanical transducer film formed of a complex oxide (PZT) including lead (Pb), zirconium (Zr), and titanium (Ti). The electromechanical transducer film is formed by laminating plural PZT thin films until a thickness of the formed electromechanical transducer film becomes a predetermined thickness. When an atomic weight ratio (Pb/(Zr+Ti)) of average Pb included in the formed electromechanical transducer film is denoted by Pb(avg) and an atomic weight ratio (Pb/(Zr+Ti)) of Pb in any one of laminate interfaces of the plural PZT thin films is denoted by Pb(interface), the Pb(avg) is greater than or equal to 100 atomic percentage (at %) and less than or equal to 110 atomic percentage (at %), and a fluctuation ratio ΔPb=Pb(avg)−Pb(interface) of Pb in the laminate interface is less than or equal to 20 percent. | 01-03-2013 |