Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Ishimaru, Saitama

Chisato Ishimaru, Saitama JP

Patent application numberDescriptionPublished
20090189705Crystal oscillator for surface mounting - A crystal oscillator includes an oscillator circuit, a main body, a first switching circuit, a second switching circuit, and a voltage detecting circuit. The oscillator circuit includes an IC chip including an output circuit and a function circuit. The crystal element includes a first excitation electrode and a second excitation electrode. The main body houses the oscillator circuit and the crystal element and includes a power supply terminal, a ground terminal, an output terminal, and a function terminal. The output terminal is electrically connected to the output circuit and the first excitation electrode via the first switching circuit. The function terminal is electrically connected to the function circuit and the second excitation electrode via the second switching circuit. The first switching circuit and the second switching circuit are operated on the basis of a switching signal from the voltage detecting circuit connected to the power supply terminal.07-30-2009
20090261912Crystal device for surface mounting - A surface-mounted device includes a ceramic case, which has a concave portion formed by a bottom wall layer, a frame wall intermediate layer and a frame wall upper layer, and which houses at least a crystal element inside the concave portion. The ceramic case includes: arc-formed notched parts at outer circumference four corners thereof; and mounting terminals, which are extended to notched parts in the bottom wall layer among the notched parts, on an outer bottom face thereof. A radius of curvature of the notched parts in the frame wall intermediate layer is made identical to or greater than a radius of curvature of the notched parts in the bottom wall layer, and a radius of curvature of the notched parts in the frame wall upper layer is less than the radii of curvature of the notched parts in the bottom wall layer and the frame wall intermediate layer.10-22-2009
20090261913Crystal device for surface mounting - A crystal device for surface mounting, in which a metal cover is jointed to the metal ring by seam welding, satisfies relationships A10-22-2009
20090261915Crystal Device for Surface Mounting - There is provided a crystal device in which an area inside a ceramic case is made larger to increase the design freedom of a crystal unit (crystal element).10-22-2009

Ryohei Ishimaru, Saitama JP

Patent application numberDescriptionPublished
20080241628MEMBRANE-ELECTRODE ASSEMBLY FOR SOLID POLYMER ELECTROLYTE FUEL CELL - An object of the present invention is to provide a membrane-electrode assembly for solid polymer electrolyte fuel cells, which can impart high electrical properties by increasing the introduction amount of the sulfonic acid group, has excellent swell suppression effect even under the humidified condition of high-temperature, and which has excellent electrical properties even under the condition of high-temperature and low-humidity. By using sulfonated polyarylene having specific constitutional units as a proton conductive membrane, a membrane-electrode assembly for solid polymer electrolyte fuel cells can be provided which has excellent swell suppression effect even under the humidified condition of high-temperature, and which has excellent proton conductivity even under the condition of high-temperature and low-humidity.10-02-2008
20100062311MEMBRANE-ELECTRODE ASSEMBLY FOR SOLID POLYMER ELECTROLYTE FUEL CELL - A membrane-electrode assembly for a solid polymer electrolyte fuel cell is provided that uses a proton conductive membrane having high proton conductivity and also superior heat resistance and chemical durability. A membrane-electrode assembly for a solid polymer electrolyte fuel cell is provided with an anode on one side of a proton conductive membrane and a cathode on another side thereof, and the proton conductive membrane is a sulfonated polyarylene containing a structure expressed by the general formula (1) below:03-11-2010

Shinya Ishimaru, Saitama JP

Patent application numberDescriptionPublished
20100257845EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust purification device for an internal combustion engine is provided that can promote the reduction of NOx in a NOx purification catalyst from immediately after startup of the internal combustion engine. The exhaust purification device includes: a fuel reformer that is provided separately from exhaust plumbing 10-14-2010
20100275581EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - Provided is an exhaust emission control device for an internal combustion engine capable of preventing NOx purification performance from degrading according to the operating condition. The exhaust emission control device comprises an NOx purification catalyst for adsorbing or occluding NOx in exhaust emissions and reducing the NOx, which is provided in an exhaust pipe (11-04-2010
20100275584EXHAUST GAS PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust gas purification device for an internal combustion engine, in which a catalyst installed in an exhaust passage is quickly heated to the activation temperature of the catalyst. The exhaust gas purification device has a NOx purification catalyst (11-04-2010
20100282189EXHAUST GAS CLEANER - Provided is an exhaust gas cleaner by which nitrogen oxides contained in an exhaust gas can be efficiently removed in a wide temperature range from a low temperature. The exhaust gas cleaner (11-11-2010
20100287917EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust purification device for an internal combustion engine can achieve high NOx purifying performance independent of operating conditions of the engine. The exhaust purification device has a NOx purification catalyst (11-18-2010
20100316532FUEL REFORMING DEVICE - Provided is a fuel reforming device, which can produce and supply a reformed gas in quick response to a demand for the reformed gas and which is so inexpensive as can be suitably mounted on a vehicle. The fuel reforming device feeds a material to a reforming catalyst and produces the reformed gas under a pressure higher than the atmospheric pressure. The fuel reforming device comprises a material supply means for supplying the material to the reforming catalyst, a reforming means having the reforming catalyst, for reforming the material supplied from the material supply means, to produce the reformed gas, and a run control means for controlling the run of the fuel reforming device. The run control means includes a stop mode, in which the drive of the material supply means is stopped to stop the production of the reformed gas, a reform mode, in which the material supply means is driven to produce the reformed gas, and a standby mode, in which the material supply means is driven and in which the temperature of the reforming catalyst is held within a predetermined range while producing the reformed gas as little as possible, so that the standby mode can shift instantly to the reform mode.12-16-2010

Takehisa Ishimaru, Saitama JP

Patent application numberDescriptionPublished
20110237824Process for Producing Fluoroalkylsulfonylaminoethyl Alpha-Substituted-Acrylate - Aminoethanol is reacted with a fluoroalkylsulfonic anhydride to obtain a fluoroalkylsulfonylaminoethanol (first step: sulfonylamidation step). The fluoroalkylsulfonylaminoethanol is esterified with an α-substituted acrylate derivative to obtain a desired fluoroalkylsulfonylaminoethyl α-substituted-acrylate (second step: esterification step). Thus, the desired fluoroalkylsulfonylaminoethyl α-substituted-acrylate having a higher purity can be produced in higher yield with higher operating efficiency than in conventional techniques.09-29-2011