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    • 85. 发明授权
    • Press-forming method for optical element
    • 光学元件压制成型方法
    • US5228894A
    • 1993-07-20
    • US901980
    • 1992-06-22
    • Bunryo SatoTakeshi NomuraKiyoshi YamamotoMasaki Ohmori
    • Bunryo SatoTakeshi NomuraKiyoshi YamamotoMasaki Ohmori
    • C03B11/00C03B11/08
    • C03B11/08
    • A method for press-forming a glass preform includes the steps of applying positioning pressure to an upper mold as the temperature of the upper mold and a lower mold increase to set values, maintaining a first temperature difference between the upper and lower molds of at least 10.degree. C. and increasing the temperature of the glass preform to a value above its glass transition temperature. Additional steps include cooling the upper and lower molds at a rate of 30.degree. to 100.degree. C. per minute while maintaining a temperature difference between the upper and lower molds at at least the first temperature difference, applying pressure to the lower mold, and opening the upper and lower molds to release the formed optical element after the temperatures of the upper and lower molds decrease to below a set value and a temperature difference between the upper and lower molds becomes greater than the first temperature difference.
    • 一种用于压制成型玻璃预制件的方法包括以下步骤:随着上模和下模的温度升高而将定位压力施加到上模,以设定值,保持上模和下模之间的第一温差至少 10℃,并将玻璃预制件的温度提高到高于其玻璃化转变温度的值。 另外的步骤包括以每分钟30-100℃的速度冷却上模具和下模具,同时在至少第一温度差下保持上模和下模之间的温差,向下模施加压力,并打开 上下模具在上下模具的温度降低到设定值以下之前释放形成的光学元件,并且上模具和下模具之间的温差变得大于第一温度差。
    • 87. 发明授权
    • Method of manufacturing optical element
    • 制造光学元件的方法
    • US5215566A
    • 1993-06-01
    • US820916
    • 1992-01-15
    • Kiyoshi YamamotoTakeshi Nomura
    • Kiyoshi YamamotoTakeshi Nomura
    • C03B11/08
    • C03B11/08C03B2215/87
    • A method of manufacturing an optical element from glass material is accommodated between an upper member and a lower member of mold. The glass material is press-molded in a state and heated to a desired temperature, thereafter being cooled and released from the mold to form a product having a predetermined optical functional surface. When the product is released from the mold, the upper mold member is first lifted by a predetermined amount, where the product may adhere to the upper mold member. Upon or after releasing and falling of the molded product from the upper mold member due to its own weight or heat stress, the upper mold member is further caused to ascend and the mold is opened so that the molded product can be taken out.
    • 从玻璃材料制造光学元件的方法容纳在模具的上部构件和下部构件之间。 玻璃材料在一种状态下被压模并加热至所需温度,然后被冷却并从模具中释放以形成具有预定光学功能表面的产品。 当产品从模具中释放时,首先将上模具提升预定量,其中产品可能粘附到上模具构件上。 在由于其自身重量或热应力而使模制产品从上模具脱模和脱落之后或之后,上模具进一步上升并且模具打开,从而可以取出模塑产品。
    • 89. 发明授权
    • Press molding method for an optical element and apparatus therefor
    • 用于光学元件的压制成型方法及其装置
    • US5188650A
    • 1993-02-23
    • US807509
    • 1991-12-16
    • Takeshi Nomura
    • Takeshi Nomura
    • C03B11/00C03B11/08C03B11/12C03B11/16
    • C03B11/08C03B11/12C03B11/16C03B2215/72Y10S425/808
    • Molding is effected while pressing pressure is continuously or stepwise controlled so that at the initial stage in which the temperature distribution of a glass blank is not sufficiently uniformized, molding may be effected with relatively low pressing pessure and in a state in which the whole of the glass blank is uniformly increased in temperature, press molding may be effected with the pressing pressure increased. In a press molding apparatus for an optical element, during press molding, the glass blank is press-molded while the pressing pressure is continuously or stepwise varied so that at a temperature whereat the glass viscosity of the glass blank corresponds to 10.sup.21 -10.sup.11 poise, molding may be started with pressing pressure of 10 kg/cm.sup.2 -100 kg/cm.sup.2, and thereafter in a temperature range in which the glass viscosity x of the central portion of the glass blank corresponds to 10.sup.11 -10.sup.10 poise, pressing pressure in the range of 10.times.(10.sup.11-x)-100+10.times.(10.sup.11-x) kg/cm.sup.2 may be applied, and further at a temperature whereat the glass viscosity corresponds to 10.sup.10 or less, pressing pressure of 100 kg/cm.sup.2 or greater may be applied.
    • 在按压压力连续或逐步控制的同时进行成型,使得在玻璃坯料的温度分布不充分均匀化的初始阶段,可以以相对低的压制速度进行成型,并且在整个 玻璃坯料的温度均匀地增加,压制成型可以随着按压压力的增加而进行。 在用于光学元件的压制成型设备中,在压制成型期间,玻璃坯料被压制成型,同时按压压力连续或逐步变化,使得在玻璃坯料的玻璃粘度对应于1021-1011泊的温度下, 可以在10kg / cm 2〜100kg / cm 2的压制压力下开始成型,之后在玻璃坯料的中央部的玻璃粘度×对应于1011-1010泊的温度范围内, 可以施加10×(1011-x)-100 + 10x(1011-x)kg / cm2的玻璃粘度,此外,在玻璃粘度对应于1010以下的温度下,可以施加100kg / cm 2以上的加压压力 。
    • 90. 发明授权
    • Magnesium-containing solid
    • 含镁固体
    • US4402863A
    • 1983-09-06
    • US320165
    • 1981-11-10
    • Makoto MiyazakiTakeshi NomuraChihiro ImaiMakoto Yoda
    • Makoto MiyazakiTakeshi NomuraChihiro ImaiMakoto Yoda
    • C08F4/00C08F4/60C08F4/64C08F10/00C08F4/02
    • C08F10/00
    • According to this invention, there is provided a magnesium-containing solid, obtained by contacting the reaction product of (1):a magnesium-containing solid, obtained by contacting the reaction product of:(a) metallic magnesium;(b) a halogenated hydrocarbon of the general formula RX in which R stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and X stands for a halogen atom; and(c) an alkoxy compound of the general formula X'.sub.m C(OR').sub.4-m in which X' stands for a hydrogenor halogen atoms, or an alkyl, aryl or a cycloalkyl group having 1 to 10 carbon atoms, R' stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms and m is 0, 1 or 2, with (2) an organic aluminum compound.The magnesium-containing solid is employed as a carrier for a transition metal halide. The supported transition metal halide in combination with an aluminum alkyl cocatalyst such as aluminum triethyl is usefully employed for the polymerization of olefins.
    • 根据本发明,提供了一种含镁固体,其通过使(1):含镁固体的反应产物与通过使(a)金属镁反应的反应产物接触而获得的含镁固体; (b)通式RX的卤代烃,其中R代表具有1至20个碳原子的烷基,芳基或环烷基,X代表卤素原子; 和(c)通式X'mC(OR')4-m的烷氧基化合物,其中X'代表氢或卤素原子,或具有1-10个碳原子的烷基,芳基或环烷基,R' 代表具有1至20个碳原子且m为0,1或2的烷基,芳基或环烷基,(2)有机铝化合物。 含镁固体用作过渡金属卤化物的载体。 负载的过渡金属卤化物与烷基铝助催化剂如三乙基铝的组合可用于烯烃的聚合。