Ngk Insulators, Inc.

Metawater Co., Ltd.

Ngk Ceramic Device Co., Ltd.

Nippondenso Co., Ltd.

Kiyotaka Sugiura

Hiroyuki Oyachi

Hideki Takeuchi

Hiroyuki Shindo

Nobuhiro Aoki

Takashi Noguchi

Sadamitsu Shiode

Keiji Itou

Toshihisa Nakano

Kohji Hattori

Masaki Itou

Satoru Mima

A method of removing soluble manganese includes: a mixing step of mixing water for treatment, activated carbon micropowder having an average particle size of not less than 0.1 &#x3bc;m and not more than 10 &#x3bc;m, and an oxidizing agent to obtain a water/activated carbon mixture; and a membrane filtration step of membrane filtering the water/activated carbon mixture to obtain treated water.

Method of removing soluble manganese

A method for manufacturing a gas sensor element includes (a) printing a wiring pattern of a conductive paste on a green sheet for an oxygen-ion conductive solid electrolyte; (b) laminating a plurality of green sheets including the green sheet having been subjected to step (a) and integrating the plurality of green sheets; (c) cutting out a plurality of element bodies from the laminated body; (d) baking the element body cut out by step (c); (e) heating the element body having been subjected to step (d), in a reducing atmosphere; (f) driving the element body having been subjected to step (e), in an inspection-purpose gas atmosphere for a predetermined time period; and (g) inspecting electrical characteristics of the element body having been subjected to step (f). The element body having passed the inspection of step (g) is assembled as a sensor element in a gas sensor.

Method for manufacturing sensor element for gas sensor

An inspection apparatus including a cylindrical chamber having an opening part and a bottomed end part. The chamber includes an element insertion/extraction part, a tapered part, and a gas introduction part. The element insertion/extraction part is a tubular space continuous from the opening part. The tapered part is connected to the element insertion/extraction part, and is a space having a tapered shape in a cross-sectional view sectioned perpendicularly so that a lengthwise direction is larger toward the inner side. The gas introduction part is a tubular space continuously extending from the tapered part to a bottom portion. A sensor element is inserted into the chamber such that a front end thereof reaches the tapered part while a gap is formed between the sensor element and the chamber, and in this condition, an inspection gas is supplied to the chamber through a supply port provided in the gas introduction part.

Inspection apparatus for sensor element, and method for inspecting electrical characteristics of sensor element

A filtration device is provided having a large number of filters, each comprising a filter element and a casing. The device includes filter strings constructed so that a plurality of filters are connected in a row by header tubes, at least two rows of filter strings are further connected in parallel by a filtrate recovery collecting tube, and the filtrate recovery collecting tube is placed at a higher position than the filtrate recovery header tubes.

Filtration device

The present invention provides an upward-flow manganese contact column for feeding raw water to a manganese catalyst-packed layer through a plurality of dispersion nozzles provided at the upper surface of a chamber by forming the chamber for allowing raw water to flow in at the bottom of a column body into which a granular manganese catalyst is packed. Each dispersion nozzle has an umbrella portion above a perpendicular nozzle body, and the umbrella portion is configured so that the lower end of the umbrella portion is elongated below the upper end of the nozzle body. Raw water is supplied to the entire manganese catalyst-packed layer from the lower end of the umbrella portion of each dispersion nozzle. It is capable, of exhibiting stable treatment ability for a long time by suppressing particles of the manganese catalyst from being worn by collisions of the particles.

Upward-flow manganese contact column

The filterof the present invention has at least two filter elementscontained in the casing, which are connected in series in such a state as interposing the first sealerbetween them.

Filter and filter module

A computer (CPU) applied a faulty operation prevention circuit outputs a pulse signal having a predetermined period during normal operation. If the computer does not output the pulse signal during the predetermined period, a AND gate in the faulty operation prevention circuit shuts off a control signal output from the computer which can ignite a squib in a vehicular occupant protecting system because the computer is not working. The AND gate keeps shutting off the control signal until the computer outputs the pulse signal. Therefore, the faulty operation prevention circuit prevents the squib from being ignited based on a faulty operation of the computer.

Growing community of inventors

Nagoya, Japan

Kiyotaka Sugiura