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21. 发明申请

US20050093660A1 Filter using piezoelectric material 失效
标题翻译：使用压电材料过滤
公开(公告)号：US20050093660A1
公开(公告)日：2005-05-05
申请号：US10950975
申请日：2004-09-28
申请人： Koichi Wada , Satoshi Ichikawa , Hirotada Wachi , Tohru Takezaki , Tsuyoshi Oura , Toshifumi Tanaka , Satoshi Orito
发明人： Koichi Wada , Satoshi Ichikawa , Hirotada Wachi , Tohru Takezaki , Tsuyoshi Oura , Toshifumi Tanaka , Satoshi Orito
IPC分类号： H03H9/02 , H03H9/145 , H03H9/25 , H03H9/64
CPC分类号： H03H9/6426 , H03H9/02779 , H03H9/02992 , H03H9/1452 , H03H9/6479 , H03H9/6489
摘要： A filter includes a piezoelectric substrate, and interdigital transducers (IDTs) that are formed on the piezoelectric substrate. At least one of the IDTs has a main electrode finger pattern that is weighted. The IDT having the main electrode finger pattern also has a sub electrode finger pattern that is connected in parallel to the main electrode finger pattern, and generates a surface acoustic wave that cancels a surface acoustic wave caused by leakage electric fields generated in the main electrode finger pattern.
摘要翻译：滤波器包括形成在压电基板上的压电基板和叉指式换能器（IDT）。 IDT中的至少一个具有加权的主电极手指图案。具有主电极指形图案的IDT也具有与主电极指形图案并联连接的副电极指形图案，并且产生抵消由主电极指中产生的漏电电场引起的表面声波的表面声波模式。

22. 发明授权

US06842090B2 Surface acoustic wave device utilizing opposite propagation direction regions and resonant mode coupling 失效
标题翻译：表面声波装置利用相反的传播方向区域和谐振模式耦合
公开(公告)号：US06842090B2
公开(公告)日：2005-01-11
申请号：US09871983
申请日：2001-06-04
申请人： Satoshi Ichikawa , Seiichi Mitobe
发明人： Satoshi Ichikawa , Seiichi Mitobe
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/6433 , H03H9/14505 , H03H9/14514 , H03H9/1455 , H03H9/14552 , H03H9/14597
摘要： Transducers are connected in parallel on a piezoelectric substrate. Each of the transducers is constituted of RSPUDTs. The RSPUDTs include SPUDTs that are opposed to each other such that their propagation directions are opposite to each other. The SPUDTs have a unidirectional electrode structure having a propagation characteristic.
摘要翻译：传感器在压电基板上并联连接。每个换能器由RSPUDT组成。 RSPUDT包括彼此相对的SPUDT，使得它们的传播方向彼此相反。 SPUDT具有传播特性的单向电极结构。

23. 发明授权

US06462633B1 Surface acoustic wave device including parallel connected main and sub-filters 有权
标题翻译：表面声波装置包括并联的主和子滤波器
公开(公告)号：US06462633B1
公开(公告)日：2002-10-08
申请号：US09758372
申请日：2001-01-12
申请人： Satoshi Ichikawa
发明人： Satoshi Ichikawa
IPC分类号： H03H964
CPC分类号： H03H9/6426 , H03H9/14505
摘要： A band filter is provided which can freely set the bandwidth and blocking characteristic without any need for a high level designing and adjustment. To this end, a surface acoustic wave device is so constructed as to connect a main filter Fm and sub-filter Fs in a parallel array. Here, relative to a frequency area corresponding to a passband of the main filter Fm the frequency-attenuation amount characteristic of the sub-filter Fs has a blocking band and, relative to a slope portion formed outside a passband of the main filter Fm, the frequency-attenuation characteristic of the sub-filter Fs has a rising area constituting a passband and signals involved provide an opposite-phase relation.
摘要翻译：提供了一种可以自由设置带宽和阻塞特性的频带滤波器，而无需高级设计和调整。为此，表面声波装置被构造成将主滤波器Fm和子滤波器Fs并联连接。这里，相对于与主滤波器Fm的通带对应的频率区域，子滤波器Fs的频率衰减量特性具有阻挡带，并且相对于形成在主滤波器Fm的通带外的斜坡部分，子滤波器Fs的频率衰减特性具有构成通带的上升区域，并且涉及的信号提供相反相位关系。

24. 发明授权

US6090744A Catalyst for cleaning exhaust gas 失效
标题翻译：用于净化废气的催化剂
公开(公告)号：US6090744A
公开(公告)日：2000-07-18
申请号：US828029
申请日：1997-03-27
申请人： Yuki Koda , Satoshi Ichikawa , Hiroshi Yamada , Kenichi Yamamoto , Kenji Okamoto , Toshitsugu Ueoka , Hiroshi Murakami , Takashi Takemoto , Kazuo Misonoo , Masahiko Shigetsu , Taeko Shimizu
发明人： Yuki Koda , Satoshi Ichikawa , Hiroshi Yamada , Kenichi Yamamoto , Kenji Okamoto , Toshitsugu Ueoka , Hiroshi Murakami , Takashi Takemoto , Kazuo Misonoo , Masahiko Shigetsu , Taeko Shimizu
IPC分类号： B01D53/94 , B01J23/63 , B01J23/10 , B01J23/40
CPC分类号： B01D53/945 , B01J23/63 , B01D2255/102 , B01D2255/40 , Y02T10/22
摘要： In the exhaust gas purifying catalyst (3), palladium is contained as a catalytic component and cerium oxide and (Ce, Pr) compound oxide is contained as a promoter. Now, the weight ratio of cerium oxide to (Ce, Pr) compound oxide is set between 9/1 and 7/3, and the ratio of praseodymium to cerium in the (Ce, Pr) compound oxide is set between 3 mol % and 50 mol %. In this way, because in this exhaust gas purifying catalyst (3), palladium with high low-temperature activity is used for a catalytic component, the exhaust gas purifying performance at low temperature is improved. And because cerium oxide and (Ce, Pr) compound oxide improves catalytic activity of palladium at high temperature, the exhaust gas purifying performance at high temperature, in particular, NOx purifying performance, is improved.
摘要翻译：在废气净化催化剂（3）中，作为催化剂成分含有钯，作为助催化剂含有氧化铈和（Ce，Pr）复合氧化物。现在，氧化铈与（Ce，Pr）复合氧化物的重量比设定在9/1〜7/3之间，（Ce，Pr）复合氧化物中的镨与铈的比例设定在3mol％〜 50摩尔％。这样，由于在该废气净化用催化剂（3）中，作为催化剂成分使用具有低低温活性的钯，因此能够提高低温下的废气净化性能。并且，由于氧化铈和（Ce，Pr）复合氧化物改善了钯在高温下的催化活性，因此提高了高温下的废气净化性能，特别是NOx净化性能。

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