Takeshi Kawai
Takeshi Kawai, Aichi JP
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20100225339 | DETECTION METHOD FOR DEFECT OF SENSOR - A defect detection method for a sensor in which a fixing member provides a seal between a sensor element and tubular metallic members, the method being capable of detecting breakage of a conductor caused by breakage of the element. | 09-09-2010 |
Takeshi Kawai, Komaki-Shi JP
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20100000293 | GAS SENSOR - A gas sensor including: a gas sensing element including first and second ceramic layers. The first ceramic layer has a first through hole and a first through hole conductor covering an inner surface thereof The first ceramic layer includes a first conductor which includes: a first peripheral conductive portion electrically connected to the first through hole conductor; a first lead portion that is narrower than the first peripheral conductive portion; and a first contact conductive portion that is wider than the first lead portion. The first peripheral conductive portion, the first lead portion and the first contact conductive portion are integrally formed and arranged in this order in a longitudinal direction. The second ceramic layer includes a second conductor electrically connected to at least the first contact conductive portion. | 01-07-2010 |
20100101314 | METHOD AND APPARATUS FOR DETECTING ABNORMALITY OF NITROGEN OXIDE PURIFYING CATALYST - A method and apparatus for detecting an abnormality of a nitrogen oxide purifying catalyst using an NOx sensor, the method including: calculating a detection integrated value by integrating corresponding values corresponding to the NOx sensor output signal obtained until a first predetermined detection period has elapsed after the NOx sensor begins to generate an output signal and subtracting a variation integrated value. The variation integrated value is calculated by integrating corresponding values obtained until a predetermined second detection period has elapsed after the NOx sensor beings to generate an output signal when driven in a gas atmosphere having a constant nitrogen oxide concentration. | 04-29-2010 |
20110132775 | SENSOR CONTROL DEVICE AND SENSOR CONTROL METHOD - [Objective] An object is to provide a sensor control apparatus and a sensor-control-apparatus control method which can reduce variation in startup time among a plurality of times of execution of detection processing, in consideration of variation in output characteristic among a plurality of gas sensors. | 06-09-2011 |
20110214988 | GAS SENSOR ELEMENT, GAS SENSOR AND CONTROL SYSTEM OF GAS SENSOR - In order to compensate for variation in output of sensor elements | 09-08-2011 |
20120006093 | GAS SENSOR - [Objective] To provide a gas sensor in which the insulation among conduction members is stably secured through stable maintenance of the insulation property of a separator provided within a sheath, whereby a normal output can be obtained from a detection element. | 01-12-2012 |
20120211374 | NOx CONCENTRATION DETECTION APPARATUS AND NOx CONCENTRATION DETECTION METHOD - An apparatus and method for individually detecting NO and NO | 08-23-2012 |
Takeshi Kawai, Niigata JP
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20110112323 | PROCESS FOR PRODUCTION OF HIGH-PURITY TRIMELLITIC ACID - Provided is a process for the production of high-purity trimellitic acid including subjecting a dimethylbenzaldehyde and/or an oxidized derivative of the dimethylbenzaldehyde to liquid-phase oxidation with molecular oxygen in an aqueous solvent containing a catalyst to produce trimellitic acid, in which: 3,4-dimethylbenzaldehyde and/or 3,4-dimethylbenzoic acid are/is used as a raw material; a catalyst containing 0.05 to 1 part by mass of one or more kinds of metals selected from the group consisting of cobalt, manganese, and nickel, 0.0001 to 0.0015 part by mass of metallic iron and/or iron obtained from a water-soluble iron salt, and 1 to 5 parts by mass of bromine with respect to 100 parts by mass of the aqueous solvent is used as the catalyst; and the liquid-phase oxidation is conducted at a temperature of 200 to 250° C. According to the process of the present invention, there can be provided high-quality, high-purity trimellitic acid with extremely small amounts of by-products such as an intermediate of oxidation, an addition compound, and an organobromine compound in high yield. In addition, the residual ratio of bromine used as a catalyst is high, and hence a production cost is curtailed. | 05-12-2011 |
20110112346 | PROCESS FOR PRODUCING ADAMANTANE - A method for producing adamantane by performing an isomerization reaction in two stages using endo-tetrahydrodicyclopentadiene and/or exo-tetrahydrodicyclopentadiene as a starting material, wherein in a first-stage isomerization reaction from endo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.0 | 05-12-2011 |
Takeshi Kawai, Yokosuka-Shi JP
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20150237420 | OPTICAL SIGNAL PROCESSING APPARATUS - To provide an optical signal processing device that can collect light from an input waveguide to form a beam array having a small diameter. The optical signal processing device includes input waveguides | 08-20-2015 |