Patent application number | Description | Published |
20090289525 | PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC DEVICE - There is provided a piezoelectric ceramic composition that contains Na, Bi, Ti and Co wherein the composition ratio of Na, Bi, Ti and Co in terms of oxides thereof is in the following composition range (1): | 11-26-2009 |
20100264355 | PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT MADE BY USING THE SAME - The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa | 10-21-2010 |
20120043511 | CONDUCTIVE SINTERED OXIDE, THERMISTOR ELEMENT INCLUDING THE SAME, AND TEMPERATURE SENSOR INCLUDING THE SAME - A conductive sintered oxide which includes: a conductive crystal phase having a perovskite structure represented by (RE | 02-23-2012 |
20120043513 | CONDUCTIVE SINTERED OXIDE, THERMISTOR ELEMENT INCLUDING THE SAME, AND TEMPERATURE SENSOR INCLUDING THE SAME - A conductive sintered oxide including: a first crystal phase represented by RE1 | 02-23-2012 |
20120211362 | GAS SENSOR ELEMENT AND GAS SENSOR - There is provided a gas sensor element for detecting the concentration of a specific gas component in gas under measurement, which includes a plate-shaped element body and a porous protection layer. The element body has, at one end portion thereof, a gas sensing portion formed with a solid electrolyte substrate and a pair of electrodes. The porous protection layer has a porous structure formed of ceramic particles and surrounds at least the circumference of the one end portion of the element body. In the present invention, the porous protection layer has an inner region, an intermediate region and an outer region laminated together in order of mention from the element body toward the outside. The intermediate region has a porosity lower than those of the inner and outer regions. There is also provided a gas sensor with such a gas sensor element. | 08-23-2012 |
20120262049 | SPARK PLUG AND PROCESS FOR PRODUCING SPARK PLUG - A spark plug that is equipped with an insulator that has a stem portion on a front end side, a center electrode, and a main metal member that retains the insulator at an engaging projection portion, wherein an inner diameter D | 10-18-2012 |
20130104625 | GAS SENSOR ELEMENT AND GAS SENSOR | 05-02-2013 |
20130236259 | SINTERED BODY AND CUTTING TOOL - A sintered body containing alumina crystal particles and zirconia crystal particles as main components includes the tetragonal crystal particles as the zirconia crystal particles. The zirconia crystal particles satisfy relations 0%≦A≦3%, 3%≦B≦22% and 77%≦C≦96%, where A, B and C are as defined herein. | 09-12-2013 |
20140130572 | GAS SENSOR ELEMENT AND GAS SENSOR - A gas sensor element and a gas sensor incorporating the gas sensor element. The gas sensor element ( | 05-15-2014 |
20140242383 | CERAMIC SINTERED BODY - A ceramic sintered body includes tungsten carbide, zirconia, and alumina. The content of the tungsten carbide is 20 to 50 vol %, and the content of the zirconia is 5 to 25 vol %. The crystal phase of the zirconia is a tetragonal crystal or a mixture of tetragonal and monoclinic crystals. The ceramic sintered body does not substantially include Ti compounds. The average particle diameter of the tungsten carbide, the average particle diameter of the zirconia, and the average particle diameter of the alumina are all 1 μm or less. | 08-28-2014 |