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    • 83. 发明授权
    • Fluid dynamic bearing device
    • 流体动力轴承装置
    • US08128289B2
    • 2012-03-06
    • US12304837
    • 2007-03-01
    • Tetsuya YamamotoIsao KomoriYoshiharu InazukaMasaharu Hori
    • Tetsuya YamamotoIsao KomoriYoshiharu InazukaMasaharu Hori
    • F16C32/06
    • F16C33/107F16C17/08F16C17/107F16C2370/12
    • An outer peripheral surface (8d) of a bearing sleeve (8) is formed on a radially inside with respect to a first dynamic pressure generation portion (B1). In this case, it is possible to reduce a thickness of the bearing sleeve (8) while securing a first thrust dynamic pressure generating portion (B1) which has a thrust load capacity equivalent to that in a conventional case where a thrust dynamic pressure generating portion is formed in an end surface of the bearing sleeve. Accordingly, it is possible to reduce the thickness of the bearing sleeve (8) without sacrificing a bearing performance in a thrust direction. With this structure, a total amount of a lubricating oil sealed in a bearing device can be reduced, thereby reducing a capacity of a buffering function so as to downsize a sealing portion (9), and by extension, downsizing a fluid dynamic bearing device (1).
    • 在第一动压产生部(B1)的径向内侧形成有轴承套(8)的外周面(8d)。 在这种情况下,可以在确保推力载荷能力等同于推力动压产生部分(B1)的第一推力动压产生部分(B1)的同时,减小轴承套筒(8)的厚度, 形成在轴承套的端面上。 因此,可以在不牺牲推力方向的轴承性能的情况下减小轴承套(8)的厚度。 利用这种结构,可以减少密封在轴承装置中的润滑油的总量,从而降低缓冲功能的能力,从而减小密封部分(9)的尺寸,并且通过扩展来减小流体动态轴承装置( 1)。
    • 85. 发明授权
    • Method for producing optically active α-ionone
    • 光学活性α-紫罗兰酮的制造方法
    • US08053592B2
    • 2011-11-08
    • US13012199
    • 2011-01-24
    • Tetsuya YamamotoKenji YagiKenya Ishida
    • Tetsuya YamamotoKenji YagiKenya Ishida
    • C07C69/78C07C69/533C07C69/63
    • C12P7/26A23L2/56A23L27/204A61K8/37A61Q11/00A61Q13/00C07B53/00C07B2200/07C07C403/08C07C403/12C07C403/14C07C2601/16C12G3/06C12P41/004
    • Provided that a method for inexpensively producing optically active α-ionone with a high yield and a high asymmetric yield and with good workability in a short process, and a perfume composition comprising the optically active α-ionone obtained by the aforementioned method. A method for producing optically active α-ionone, comprising allowing α-ionone as a mixture of optical isomers to react with an esterification agent, and hydrolyzing the obtained α-ionone enol ester; a method for producing optically active α-ionone comprising subjecting α-ionone as a mixture of optical isomers to an asymmetric reduction, allowing the obtained optically active α-ionol to react with an esterification agent to give an optically active α-ionol ester, hydrolyzing the obtained optically active α-ionol ester after purification as necessary, and then oxidizing the obtained optically active α-ionol; and a perfume composition comprising thus obtained optically active α-ionone.
    • 本发明提供了一种低成本地生产光学活性α-紫罗兰酮的方法,其具有高产率和高不对称产率,并且在短时间内具有良好的可加工性,以及包含通过上述方法获得的光学活性α-紫罗兰酮的香料组合物。 一种光学活性α-紫罗兰酮的制造方法,其特征在于,使作为旋光异构体的混合物的α-紫罗烯酮与酯化反应,水解得到的α-紫罗烯酮烯醇酯; 一种光学活性α-紫罗兰酮的制造方法,其特征在于,将α-紫罗烯酮作为光学异构体的混合物进行不对称还原,使得所得光学活性α-离子酚与酯化反应,得到光学活性α-离子醇酯,水解 根据需要纯化后得到的光学活性α-离子醇酯,然后氧化所得光学活性α-离子醇; 和包含这样得到的光学活性α-紫罗兰酮的香料组合物。
    • 88. 发明申请
    • FLUID DYNAMIC BEARING DEVICE
    • 流体动力轴承装置
    • US20110097025A1
    • 2011-04-28
    • US12997784
    • 2009-06-11
    • Fuminori SatojiToshiyuki MizutaniTetsuya YamamotoIsao KomoriTetsuya Kurimura
    • Fuminori SatojiToshiyuki MizutaniTetsuya YamamotoIsao KomoriTetsuya Kurimura
    • F16C32/06
    • F16C33/723F16C17/107F16C32/0633F16C33/745F16C43/02F16C2370/12
    • In order to improve retention strength of a lid member without increase in size and reduction in bearing property of a bearing device, a fluid dynamic bearing device (1) includes: a shaft member (2); a bearing sleeve (8) which forms a radial bearing gap between the bearing sleeve and an outer peripheral surface of the shaft member (2); a housing (4) which accommodates the bearing sleeve (8) and is opened at both ends; and a lid member (10) which closes an opening on one end side of the housing (9) and forms thrust bearing portions (T1 and T2). The housing (9) is an injection-molded product into which the bearing sleeve (8) is inserted, and the housing (9) has another end with which a seal portion (9b) forming a seal space (S) is integrally formed. The lid member (10) is fitted with the outer peripheral surface of the housing (9) by loose fitting so that the lid member (10) and the housing (9) are bonded and fixed to each other.
    • 为了提高盖构件的保持强度而不增加轴承装置的尺寸和减小轴承特性,流体动力轴承装置(1)包括:轴构件(2); 轴承套筒(8),其在所述轴承套筒和所述轴构件(2)的外周表面之间形成径向轴承间隙; 容纳所述轴承套(8)并在两端敞开的壳体(4); 以及盖构件(10),其封闭所述壳体(9)的一端侧的开口并形成止推轴承部(T1和T2)。 壳体(9)是轴承套(8)插入其中的注塑产品,并且壳体(9)具有形成密封空间(S)的密封部分(9b)的另一端。 盖构件(10)通过松动配合与壳体(9)的外周面嵌合,使得盖构件(10)和壳体(9)彼此结合固定。