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1. 发明授权

US10132746B2 Methane number calculation method and methane number measurement device 有权
公开(公告)号：US10132746B2
公开(公告)日：2018-11-20
申请号：US15531664
申请日：2016-03-11
申请人： Riken Keiki Co. Ltd.
发明人： Kenichi Kojima , Tomoo Ishiguro
IPC分类号： G01N21/35 , G01N21/3504 , G01N33/22
摘要： The present invention has as its object the provision of a methane number calculation method that allows for readily acquiring a methane number of a natural gas, which is a sample gas to be measured, with acceptable reliability irrespective of toe gas composition, and as another object the provision of a methane number measurement device that is capable of monitoring the fuel property of a natural gas to be used as a fuel gas.The present invention includes: acquiring in advance a particular relational expression between the methane number and the basic calorific value of a plurality of types of reference gases, each formed of a natural gas and each having a different methane number value; measuring the basic calorific value of a natural gas, which is a sample gas, as well as the concentration of the nitrogen gas and the concentration of the carbon dioxide gas, both gases being contained in the sample gas; and calculating the methane number of the sample gas from the value of the basic calorific value of the sample gas, the value of the concentration of the nitrogen gas and the value of the concentration of the carbon dioxide gas, and the particular relational expression.

2. 发明授权

US07479255B2 Gas sensor 有权
标题翻译：气体传感器
公开(公告)号：US07479255B2
公开(公告)日：2009-01-20
申请号：US10495790
申请日：2002-11-14
申请人： Seiichi Otani , Yukio Nakamura , Mamoru Furusato
发明人： Seiichi Otani , Yukio Nakamura , Mamoru Furusato
IPC分类号： G01N31/12 , G01N27/16
CPC分类号： G01N27/16 , G01N33/005 , H01M8/0662 , H01M8/10 , H01M2300/0082 , Y10T436/22
摘要： A hydrogen sensor 25 has a fitting base plate 29 in which a gas-sensing chamber 34 is formed, a specimen gas intake 35 formed on said fitting base plate 29, opening toward an exit passage 24 and introducing hydrogen gas into the gas-sensing chamber 34, a gas-sensing element 39 held in the gas-sensing chamber 34 and adapted to sense hydrogen gas, and a water-repelling filter 44 covering the specimen gas intake 35.
摘要翻译：氢传感器25具有：配置基板29，形成有气体感测室34，形成在所述配件基板29上的试样气体入口35，朝向出口通路24开口，并将氢气引入气体感测室 34，保持在气体感测室34中并适于感测氢气的气体感测元件39以及覆盖样本气体进口35的排水过滤器44。

3. 发明申请

US20060133962A1 Contact combustion gas sensor 有权
公开(公告)号：US20060133962A1
公开(公告)日：2006-06-22
申请号：US10560359
申请日：2004-06-04
申请人： Seiichi Otani
发明人： Seiichi Otani
IPC分类号： G01N33/00
CPC分类号： G01N27/16
摘要： A contact combustion-type gas sensor that can maintain its initial sensitivity over a long period of time in the presence of silicon vapor, wherein an induction portion 5 of a gas detecting element 1 contains not less than 30 percent by weight of an oxidation catalyst, and is aged in advance in an environment that contains silicon vapor serving as a poisoning substance.

4. 发明申请

US20050092064A1 Portable gas detector 失效
标题翻译：便携式气体检测仪
公开(公告)号：US20050092064A1
公开(公告)日：2005-05-05
申请号：US10914890
申请日：2004-08-09
申请人： Shuji Tajima , Yasunori Takei
发明人： Shuji Tajima , Yasunori Takei
IPC分类号： G01N27/16 , G01N1/22 , G01N1/24 , G01N7/00
CPC分类号： G01N1/2205 , G01N1/24 , G01N2001/2276
摘要： The invention provides a portable gas detector which is equipped with filters for removal of interfering gases, high in convenience for use, easy to exchange the filters, and easy to confirm the time the filters are exchanged. The portable gas detector has a housing in the form of a slim and flat box holdable by grasping with a hand, and a foreside half portion in the interior of the housing is provided as functional part region, in which a plurality of gas sensors are arranged in a state fixed by a holder and a cap, in the interior of which a gas flowing path has been formed. At a position corresponding to at least one gas sensor in the sensor cap exposed to the back surface of the housing, a filter assembly for removal of an interfering gas component related to the gas sensor is detachably provided.
摘要翻译：本发明提供一种便携式气体检测器，其配备有用于去除干扰气体的过滤器，使用方便性高，便于更换过滤器，并且易于确认过滤器被更换的时间。便携式气体检测器具有通过用手抓住而保持的纤细和扁平盒形式的壳体，并且壳体内部的前半部分被设置为功能部分区域，其中布置有多个气体传感器在由保持器和盖固定的状态下，在其内部形成有气体流动路径。在对应于暴露于壳体的后表面的传感器盖中的至少一个气体传感器的位置处，可拆卸地提供用于去除与气体传感器相关的干扰气体成分的过滤器组件。

5. 发明申请

US20040197225A1 Formaldehyde detecting material 有权
标题翻译：甲醛检测材料
公开(公告)号：US20040197225A1
公开(公告)日：2004-10-07
申请号：US10658754
申请日：2003-09-10
申请人： Riken Keiki Co., Ltd
发明人： Nobuo Nakano , Tetsuya Kawabe , Yasuhiro Terauchi , Kouzi Suzuki
IPC分类号： G01N037/00
CPC分类号： G01N31/22 , Y10T436/200833
摘要： A detecting material to detect formaldehyde at low concentration in the atmosphere in a short time is prepared by impregnating a base material containing at least silica gel with a coloring liquid containing 4-amino-4-phenyl-3-ene-2-one and a buffer solution and volatilizing the solvent.
摘要翻译：通过在含有4-氨基-4-苯基-3-烯-2-酮的着色液中浸渍含有至少硅胶的基材，制备在短时间内在大气中检测低浓度甲醛的检测材料，缓冲溶液和挥发溶剂。

6. 发明申请

US20030138329A1 Gas suction pump device, gas feed adapter and gas alarm unit 失效
标题翻译：吸气泵装置，供气适配器和气体报警装置
公开(公告)号：US20030138329A1
公开(公告)日：2003-07-24
申请号：US10201068
申请日：2002-07-22
申请人： Riken Keiki Co., Ltd.
发明人： Junichi Koyano , Shuji Tajima , Yasunori Takei , Takuo Aida
IPC分类号： F04B049/00
CPC分类号： G08B21/14
摘要： The invention provides a gas suction pump device equipped with a casing having a substantially rectangular frame-like sectional shape and formed slenderly in a gas flowing direction and into a size holdable by grasping with a hand, a control circuit board provided in the casing so as to extend in a longitudinal direction along the upper wall of the casing, a pump unit arranged in a region on the side of one side wall on the lower side of the control circuit board in a state that one end and the other end of a gas flow path defined by the pump unit have been connected to a gas inlet port and a gas outlet port, respectively, and a battery fitting chamber provided in a region on the side of the other side wall. The invention also provides a gas alarm unit constructed by connecting the above pump device to a portable gas alarm device provided with a specific gas feed adapter through a connecting tube.
摘要翻译：本发明提供了一种气体抽吸泵装置，其具有大致矩形的框状截面形状的壳体，并且在气体流动方向上形成为细长且通过用手抓住的尺寸，设置在壳体中的控制电路板，沿着壳体的上壁沿纵向方向延伸;泵单元，其布置在控制电路板的下侧上的一个侧壁侧的区域中，处于气体的一端和另一端的状态由泵单元限定的流路分别连接到气体入口和气体出口，以及设置在另一侧壁侧的区域中的电池配合室。本发明还提供一种气体报警单元，其通过将上述泵装置连接到具有通过连接管的特定气体供给适配器的便携式气体报警装置构成。

7. 发明申请

US20030052792A1 Portable gas alarm device 失效
标题翻译：便携式气体报警装置
公开(公告)号：US20030052792A1
公开(公告)日：2003-03-20
申请号：US10105597
申请日：2002-03-25
申请人： Riken Keiki Co., Ltd.
发明人： Junichi Koyano , Shuji Tajima , Yoshiharu Ao , Masahide Kitamura
IPC分类号： G08B023/00
CPC分类号： G08B21/14
摘要： Disclosed is a portable gas alarm device easy to be fabricated as a small-sized one handy to carry and high in convenience for use. The portable gas alarm device comprises a gas alarm device body having a casing flat in whole and a fitting member provided on the casing to fit it to the human body. The gas alarm device body has a control circuit board extending to the direction of the flat plane of the casing, a display mechanism is arranged in a central area on the front surface side of the control circuit board, a gas sensor and an alarm buzzer are arranged on the right and left sides of the display mechanism, and a battery fitting chamber is provided on the back surface side of the circuit board. A vibration generator for alarm may be provided in the gas alarm device body. The fitting member may be one suitable for use in fitting the gas alarm device body to a person's wrist or a person's wear.
摘要翻译：公开了一种易于制造的便携式气体报警装置，其小型便携式携带，使用方便性高。便携式气体报警装置包括具有整体平坦的壳体的气体报警装置主体和设置在壳体上以将其适配到人体的装配构件。气体报警器体具有向壳体的平面方向延伸的控制电路板，在控制电路板的前表面侧的中央区域设置有显示机构，气体传感器和报警蜂鸣器布置在显示机构的右侧和左侧，并且在电路板的背面侧设置有电池安装室。可以在气体报警装置主体中设置用于报警的振动发生器。配件可以是适用于将气体报警装置主体装配到人的手腕或人的衣服上的装置。

8. 外观设计

USD403603S Wrist watch type gas measuring device 失效
公开(公告)号：USD403603S
公开(公告)日：1999-01-05
申请号：US81199
申请日：1997-12-24
申请人： Haruhiko Kondo , Junichi Koyano , Masahide Kitamura
设计人： Haruhiko Kondo , Junichi Koyano , Masahide Kitamura

9. 发明授权

US5250260A Tape for detecting hydrides 失效
标题翻译：用于检测氢化物的胶带
公开(公告)号：US5250260A
公开(公告)日：1993-10-05
申请号：US969447
申请日：1992-10-30
申请人： Nobuo Nakano , Akihiro Yamamoto
发明人： Nobuo Nakano , Akihiro Yamamoto
IPC分类号： G01N31/22
CPC分类号： G01N31/224 , Y10T436/163333
摘要： A tape for detecting the presence of hydride gases by taking advantage of coloring reactions whose light sensitivity is lowered to a minimum without impairing the inherent mechanical strength of the reagent holder. The detection tape is prepared by impregnating a tape of porous cellulose fibers containing a gas adsorbent such as a powder of silica and a moisture keeper of glycerin with a coloring reagent of silver perchlorate or silver para-toluenesulfonate and a light resistance enhancer of para-toluenesulfonic acid. When the detection tape is exposed to a hydride gas contained in the sampled gas, silver perchlorate or silver para-toluenesulfonate is reduced by the hydride gas to form a colloid of silver that remains as a trace of reaction. As the amount of the colloid of silver is proportional to the concentration of the gas, the concentration of hydride gas can be determined by measuring the optical density of the trace of reaction. This tape does not discolor even after long storage as the light sensitivity of silver perchlorate and silver para-toluenesulfonate used as the coloring reagent is much lower than that of silver nitrate that has been used as the coloring reagent on the conventional detection tapes. Besides, the mechanical strength of the detection tape remains unimpaired because the acidity of para-toluenesulfonic acid added as the light resistance enhancer is not so strong as to damage the cellulose.
摘要翻译：通过利用其光敏度降低到最小而不损害试剂保持器固有的机械强度的着色反应来检测氢气气体的存在的胶带。检测带是通过将含有气体吸附剂如二氧化硅粉末和甘油保水剂的多孔纤维素纤维的带浸渍在高氯酸银或对甲苯磺酸银的着色剂和对甲苯磺酸银的耐光增强剂酸。当检测带暴露于采样气体中包含的氢化物气体时，高氯酸银或对甲苯磺酸银被氢化物气体还原，形成保留作为反应痕迹的银胶体。由于银的胶体的量与气体的浓度成比例，所以可以通过测量反应痕迹的光密度来确定氢化物气体的浓度。这种胶带即使长时间保存也不会变色，因为用作着色剂的高氯酸银和对甲苯磺酸银的光敏度远远低于用作常规检测带上着色剂的硝酸银。此外，检测带的机械强度保持不受损，因为作为耐光增强剂而添加的对甲苯磺酸的酸度不如破坏纤维素那么强。

10. 发明申请

US20210096097A1 CONTROLLED POTENTIAL ELECTROLYSIS GAS SENSOR 有权
公开(公告)号：US20210096097A1
公开(公告)日：2021-04-01
申请号：US17042599
申请日：2019-01-30
申请人： Riken Keiki Co., Ltd.
发明人： Shinji UESUGI , Kei ONO , Naoyuki Ml YAGA WA
IPC分类号： G01N27/404 , G01N33/00
摘要： The present invention has as its object the provision of a controlled potential electrolysis gas sensor capable of speedily obtaining a state in which gas concentration measurement can be conducted after the activation of a power source.
The controlled potential electrolysis gas sensor is configured to include at least a working electrode and a counter electrode which are provided in contact with an electrolytic solution and to detect a concentration of a detection target gas in a gas to be tested by detecting a current flowing between the working electrode and the counter electrode in a state in which the working electrode is controlled at a constant set potential. The controlled potential electrolysis gas sensor includes an operation control circuit that drives the controlled potential electrolysis gas sensor based on a current in a forward direction detected when the controlled potential electrolysis gas sensor is activated under energization conditions at the time of a gas detection operation.

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