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    • 5. 发明授权
    • Dielectric ceramic composition, multilayer ceramic capacitor and process
of producing same
    • 介电陶瓷组合物,多层陶瓷电容器及其制造方法
    • US6074970A
    • 2000-06-13
    • US209539
    • 1998-12-11
    • Yohashi YamashitaHideyuki KanaiHironari ShojiYuichi Nakano
    • Yohashi YamashitaHideyuki KanaiHironari ShojiYuichi Nakano
    • C04B35/46C04B35/468H01G4/12
    • C04B35/468H01G4/1227
    • A multilayer ceramic capacitor is produced by using a dielectric ceramic composition prepared by allowing a composition represented by the composition formula (Ba.sub.1-x Ca.sub.x)TiO.sub.3 (provided that 0.005.ltoreq.x.ltoreq.0.05), namely, 0.5-5 mol % to contain an additive of MnO--CoO--MgO at 0.2 to 2 mol % and a Y.sub.2 O.sub.3 additive at 2.5 mol % or less and further adding a glass component comprising SiO.sub.2 --Al.sub.2 O.sub.3 --BaO--CaO--Ta.sub.2 O.sub.5 at 0.5 to 5 mol % to the resulting composition. The dielectric ceramic composition can be prepared into slurry well by using an aqueous binder and can be sintered well with no occurrence of any crack even by fast firing, and even after barrel treatment, additionally, chipping hardly occurs in the dielectric ceramic composition. Accordingly, the resulting multilayer ceramic capacitor exerts an excellent breakdown voltage even at a large size and can therefore satisfy the JIS B characteristic.
    • 通过使用通过使由组成式(Ba1-xCax)TiO3(0.005≤x≤0.05)表示的组成即0.5-5摩尔%的组成式(Ba1-xCax)TiO3(即0.005≤x≤0.05)制备的电介质陶瓷组合物 含有0.2〜2摩尔%的MnO-CoO-MgO的添加剂和2.5摩尔%以下的Y2O3添加剂,进一步向所得到的含有0.5〜5摩尔%的SiO 2 -Al 2 O 3 -BaO-CaO-Ta 2 O 5的玻璃成分添加 组成。 电介质陶瓷组合物可以通过使用水性粘合剂制备成浆料,并且即使通过快速烧制也可以良好地烧结而不发生任何裂缝,并且即使在桶处理之后,另外在电介质陶瓷组合物中几乎不发生切屑。 因此,即使在大尺寸的情况下,所得的多层陶瓷电容器也具有优异的击穿电压,因此能够满足JIS B的特性。
    • 6. 发明授权
    • Electric double layer capacitor, activated carbon for electrode therefor and method for producing the same
    • 双电层电容器,电极用活性炭及其制造方法
    • US07564676B2
    • 2009-07-21
    • US10595409
    • 2004-10-18
    • Eiji KitajimaYuichi NakanoKiwamu TakeshitaKeizo IkaiTatsuji MaruyamaHideki OnoHaruyoshi Mizuta
    • Eiji KitajimaYuichi NakanoKiwamu TakeshitaKeizo IkaiTatsuji MaruyamaHideki OnoHaruyoshi Mizuta
    • H01G9/00
    • H01G11/34C01B32/342H01G11/38H01G11/44H01M4/583Y02E60/13
    • A method for producing activated carbon for electrodes of electric double layer capacitors is disclosed which comprises an activation step wherein activated carbon is obtained by mixing an alkali metal hydroxide with a carbon raw material for the activated carbon and heating the mixture in an inert gas atmosphere, a deactivation removal step wherein the alkali metal in the activated carbon is deactivated and removed, and a heat treatment step wherein the activated carbon having gone through the deactivation removal step is heated in an inert gas atmosphere at a temperature higher than 400° C. but not higher than the heating temperature in the activation step. Also disclosed are activated carbon produced by such a method, activated carbon for electrodes of electric double layer capacitors wherein the alkali metal content is less than 100 mass ppm, activated carbon for electrodes of electric double layer capacitors having specific impedance characteristics, and activated carbon for electrodes of electric double layer capacitors having a specific amount of surface functional groups and a specific amount of surface carboxyl groups. In an electric double layer capacitor comprising a pair of electrodes and an electrolyte solution, at least one of the electrodes contains such an activated carbon.
    • 公开了一种双电层电容器的电极用活性炭的制造方法,其特征在于,具有活性炭,其中活性炭是通过将碱金属氢氧化物与活性炭的碳原料混合并在惰性气体气氛中加热, 其中活性炭中的碱金属被去活和去除的去活化步骤,以及其中通过去活化步骤的活性炭在惰性气体气氛中在高于400℃的温度下加热的热处理步骤,但是 不高于活化步骤中的加热温度。 还公开了通过这种方法生产的活性炭,其中碱金属含量小于100质量ppm的双电层电容器的电极活性炭,具有特定阻抗特性的双电层电容器的电极用活性炭,以及用于 具有特定量的表面官能团和特定量的表面羧基的双电层电容器的电极。 在包括一对电极和电解质溶液的双电层电容器中,至少一个电极含有这种活性炭。
    • 8. 发明授权
    • Spark plug manufacturing method
    • 火花塞制造方法
    • US08633418B2
    • 2014-01-21
    • US12593038
    • 2008-03-27
    • Tomoaki KatoAkikazu TaidoYuichi Nakano
    • Tomoaki KatoAkikazu TaidoYuichi Nakano
    • B23K26/00
    • H01T21/02B23K26/0622B23K26/28Y10T29/49002
    • There is provided manufacturing method of a spark plug that includes a center electrode and a ground electrode with a discharge gap left therebetween. At least one of the center electrode and the ground electrode has an electrode body containing a base metal and a noble metal tip welded to the electrode body. The spark plug manufacturing method includes a laser welding step for welding the noble metal tip and the electrode body by placing the noble metal tip at a given position on the electrode body, irradiating a pulsed laser onto the noble metal tip and the electrode body and thereby sequentially forming welding spots corresponding to pulses of the laser in a circumferential direction of the noble metal tip, wherein at least one of the laser pulses is an initially increasing type laser pulse having a laser intensity waveform in which a laser intensity increases with time during a predetermined initial period from a pulse start time.
    • 提供了一种火花塞的制造方法,该火花塞包括中心电极和接地电极,其间具有放电间隙。 中心电极和接地电极中的至少一个具有包含焊接到电极体的基体金属和贵金属电极头的电极体。 火花塞的制造方法包括:激光焊接步骤,用于通过将贵金属电极头放置在电极体上的给定位置上来焊接贵金属电极头和电极体,将脉冲激光照射到贵金属电极头和电极体上 在贵金属电极头的圆周方向依次形成与激光脉冲相对应的焊点,其中至少一个激光脉冲是具有激光强度波形的初始增加型激光脉冲,激光强度波形在激光强度波形 从脉冲开始时间起的预定的初始周期。
    • 9. 发明申请
    • Electric double layer capacitor, activated carbon for electrode therefor and method for producing the same
    • 双电层电容器,电极用活性炭及其制造方法
    • US20070041147A1
    • 2007-02-22
    • US10595409
    • 2004-10-18
    • Eiji KitajimaYuichi NakanoKiwamu TakeshitaKeizo IkaiTatsuji MaruyamaHideki OnoHaruyoshi Mizuta
    • Eiji KitajimaYuichi NakanoKiwamu TakeshitaKeizo IkaiTatsuji MaruyamaHideki OnoHaruyoshi Mizuta
    • H01G9/00
    • H01G11/34C01B32/342H01G11/38H01G11/44H01M4/583Y02E60/13
    • A method for producing activated carbon for electrodes of electric double layer capacitors is disclosed which comprises an activation step wherein activated carbon is obtained by mixing an alkali metal hydroxide with a carbon raw material for the activated carbon and heating the mixture in an inert gas atmosphere, a deactivation removal step wherein the alkali metal in the activated carbon is deactivated and removed, and a heat treatment step wherein the activated carbon having gone through the deactivation removal step is heated in an inert gas atmosphere at a temperature higher than 400° C. but not higher than the heating temperature in the activation step. Also disclosed are activated carbon produced by such a method, activated carbon for electrodes of electric double layer capacitors wherein the alkali metal content is less than 100 mass ppm, activated carbon for electrodes of electric double layer capacitors having specific impedance characteristics, and activated carbon for electrodes of electric double layer capacitors having a specific amount of surface functional groups and a specific amount of surface carboxyl groups. In an electric double layer capacitor comprising a pair of electrodes and an electrolyte solution, at least one of the electrodes contains such an activated carbon.
    • 公开了一种双电层电容器的电极用活性炭的制造方法,其特征在于,具有活性炭,其中活性炭是通过将碱金属氢氧化物与活性炭的碳原料混合并在惰性气体气氛中加热, 其中活性炭中的碱金属被去活和去除的去活化步骤,以及其中通过去活化步骤的活性炭在惰性气体气氛中在高于400℃的温度下加热的热处理步骤,但是 不高于活化步骤中的加热温度。 还公开了通过这种方法生产的活性炭,其中碱金属含量小于100质量ppm的双电层电容器的电极用活性炭,具有特定阻抗特性的双电层电容器用电极用活性炭,活性炭用于 具有特定量的表面官能团和特定量的表面羧基的双电层电容器的电极。 在包括一对电极和电解质溶液的双电层电容器中,至少一个电极含有这种活性炭。
    • 10. 发明授权
    • Exposure control method and apparatus for an image pickup apparatus
    • 用于图像拾取装置的曝光控制方法和装置
    • US07477314B2
    • 2009-01-13
    • US10740759
    • 2003-12-22
    • Yusuke NanjoYuichi NakanoAkira KumanoMasatoshi Yamagiwa
    • Yusuke NanjoYuichi NakanoAkira KumanoMasatoshi Yamagiwa
    • H04N5/238H04N5/225G03B7/00G02B5/22
    • H04N5/2254H04N5/238
    • The invention concerns with an exposure control mechanism for use in an image pickup apparatus in which a diaphragm aperture formed by a plurality of diaphragm blades moving straightforward in opposite directions is covered by an ND filter, and intends to prevent deterioration of image quality caused by diffraction even in an image pickup device having a small picture size and a short pixel pitch. The image pickup apparatus comprises an exposure control mechanism for adjusting the quantity of light flux entering a shooting lens system. The exposure control mechanism comprises a diaphragm made up of diaphragm blades movable on a plane perpendicular to an optical axis in opposite directions to define a diaphragm aperture, and an ND filter made up of at least two ND filter elements having different transmittances. When the diaphragm blades are displaced from an aperture open state in a direction to restrict the quantity of transmitting light, an aperture area is restricted by the diaphragm blades from the open state to a predetermined aperture area, and thereafter the ND filter is advanced into the diaphragm aperture successively from one of the ND filter elements having the highest transmittance while the predetermined aperture area is maintained.
    • 本发明涉及一种用于图像拾取装置中的曝光控制机构,其中由相反方向直接移动的多个光阑叶片形成的光阑孔被ND滤光片覆盖,并且旨在防止由衍射引起的图像质量的劣化 即使在具有小图像尺寸和短像素间距的图像拾取装置中。 图像拾取装置包括用于调节进入拍摄镜头系统的光束量的曝光控制机构。 曝光控制机构包括由光阑叶片构成的光阑,该光阑叶片可在相反方向上垂直于光轴的平面上移动,以限定光阑孔径,以及由具有不同透射率的至少两个ND滤光片组成的ND滤光片。 当光阑叶片从限制发光量的方向上的孔径打开状态移位时,光阑叶片从打开状态限制到预定的开口面积,然后将ND滤光器前进到 在保持预定孔径区域的情况下,从具有最高透射率的ND滤色器元件之一连续地进行光阑孔径。