Optically active .alpha.-substituted carboxylic acid derivatives and
method for producing the same
    1.
    发明授权
    Optically active .alpha.-substituted carboxylic acid derivatives and method for producing the same 失效
    光学活性α-取代羧酸衍生物及其制备方法

    公开(公告)号:US5773240A

    公开(公告)日:1998-06-30

    申请号:US750761

    申请日:1996-12-12

    摘要: The present invention relates to an optically active .alpha.-substituted carboxylic acid derivative represented by the general formula (I): ##STR1## (wherein R.sub.1 is a hydroxyl group, ##STR2## R.sub.2 is a methyl group or a chlorine atom; R.sub.3 is a hydrogen atom or an alkyl group with 1-6 carbon atoms; n is an integer of 1 or 2; and * represents an asymmetric carbon atom, provided that R.sub.2 is a chlorine atom when R.sub.1 is a hydroxyl group); and a method for producing the optically active .alpha.-substituted carboxylic acid derivative represented by the general formula (I) and antipodes thereof using a culture, cells or a material obtainable from cells of a microorganism having an ability to asymmetrically hydrolyze ester bonds. The optically active .alpha.-substituted carboxylic acid derivatives and antipodes thereof provided by the invention are useful as raw materials for various liquid crystals and as synthetic intermediates for various optically active medicines or agricultural chemicals.

    摘要翻译: PCT No.PCT / JP95 / 01176 Sec。 371日期:1996年12月12日 102(e)日期1996年12月12日PCT提交1995年6月13日PCT公布。 第WO95 / 34525号公报 日期:1995年12月21日本发明涉及由通式(I)表示的光学活性α-取代羧酸衍生物:其中R1是羟基,R2是甲基 或氯原子; R3是氢原子或具有1-6个碳原子的烷基; n是1或2的整数; *表示不对称碳原子,条件是当R1是羟基时R2是氯原子 组); 以及使用可以从具有不对称水解酯键的能力的微生物的细胞获得的培养物,细胞或材料制备由通式(I)表示的光学活性α-取代羧酸衍生物及其对映体的方法。 本发明提供的光学活性的α-取代羧酸衍生物及其对映体可用作各种液晶的原料,也可用作各种光学活性药物或农用化学品的合成中间体。

    PROJECTION DISPLAY DEVICE AND SPEAKER DEVICE
    8.
    发明申请
    PROJECTION DISPLAY DEVICE AND SPEAKER DEVICE 审中-公开
    投影显示装置和扬声器装置

    公开(公告)号:US20120008095A1

    公开(公告)日:2012-01-12

    申请号:US13167067

    申请日:2011-06-23

    IPC分类号: G03B31/00 H04R1/02

    摘要: A projection display device includes: a light source; a light modulation portion which modulates light from the light source in accordance with an image signal; a projection portion which projects the light modulated by the light modulation portion onto a projection plane; a speaker device which outputs a sound in accordance with an audio signal; and a main body cabinet in which the light source, the light modulation portion, the projection portion, and the speaker device are disposed. The speaker device includes a speaker and a speaker box storing the speaker. The speaker box includes: a front panel to which the speaker is attached; an inner box which covers the speaker attached to the front panel from behind; and an outer box which covers the periphery of the inner box and is attached to the main body cabinet. There is a space created between the two boxes.

    摘要翻译: 投影显示装置包括:光源; 光调制部,其根据图像信号调制来自所述光源的光; 突起部,其将由所述光调制部调制出的光投射到投影面上; 扬声器装置,其根据音频信号输出声音; 以及设置有光源,调光部,突起部和扬声器装置的主体机壳。 扬声器装置包括扬声器和存储扬声器的扬声器盒。 扬声器箱包括:扬声器连接到其上的前面板; 从后面覆盖附接到前面板的扬声器的内盒; 以及外盒,其覆盖所述内箱的周边并且附接到所述主体机壳。 两个盒子之间有一个空间。

    Muffler for internal combustion engine
    9.
    发明授权
    Muffler for internal combustion engine 失效
    内燃机消声器

    公开(公告)号:US5992560A

    公开(公告)日:1999-11-30

    申请号:US945177

    申请日:1997-10-20

    摘要: The invention provides a muffler for an internal combustion engine having excellent durability (resistance to scattering) even when being exposed to a high-temperature exhaust gas and capable of maintaining a high sound absorption coefficient over a long period. Such a muffler comprises a metal tube provided with a plurality of small holes, an inorganic fiber sound-absorbing material arranged on the outer periphery thereof and a metal shell covering the outside of the sound-absorbing material, in which a scattering prevention member is disposed between the metal tube and the sound-absorbing material. The sound-absorbing material is a laminated structure of crystalline alumna fiber mat and glass fiber mat. As the scattering prevention member, there is used a stainless woven wire cloth, a woven fabric made from inorganic fiber and a metal roll.

    摘要翻译: PCT No.PCT / JP96 / 02732 Sec。 371日期:1997年10月20日 102(e)1997年10月20日PCT PCT 1996年9月20日PCT公布。 公开号WO97 / 31181 日期:1997年8月28日本发明提供了即使暴露在高温废气中并能够长时间保持高吸声系数的耐久性(耐散射性)的内燃机用消声器。 这种消音器包括设置有多个小孔的金属管,设置在其外周的无机纤维吸声材料和覆盖吸声材料外侧的金属壳,其中设置有防散射构件 在金属管和吸音材料之间。 吸声材料是结晶铝纤维毡和玻璃纤维垫的叠层结构。 作为防散射构件,使用不锈钢编织线,由无机纤维制成的织物和金属辊。

    Method of manufacturing catalytic converter for the purification of
exhaust gas
    10.
    发明授权
    Method of manufacturing catalytic converter for the purification of exhaust gas 失效
    制造用于净化废气的催化转化器的方法

    公开(公告)号:US5862590A

    公开(公告)日:1999-01-26

    申请号:US835737

    申请日:1997-04-10

    摘要: A catalytic converter for the purification of exhaust gas including a catalyst carrier, a heat-insulating seal layer and a cylindrical metal shell is manufactured by providing an assembly including the catalyst carrier, a crystalline alumina fiber mat as the heat-insulating seal layer and a sheet-shaped article and pressing the assembly into the metal shell through a funnel-shaped fixture to render a bulk density of the crystalline alumina fiber mat in use into 0.25-0.60 g/cm.sup.3.

    摘要翻译: 通过提供包括催化剂载体,结晶氧化铝纤维垫作为绝热密封层的组件和包含催化剂载体,绝热密封层和圆柱形金属壳的废气净化用催化转化器, 片状制品,并通过漏斗状夹具将组件压入金属外壳,使结晶氧化铝纤维垫的体积密度在0.25-0.60g / cm3。