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    • 41. 发明专利
    • Composite ceramic
    • 复合陶瓷
    • JP2008087986A
    • 2008-04-17
    • JP2006267436
    • 2006-09-29
    • Nippon Tungsten Co Ltd日本タングステン株式会社
    • MATSUO SHIGERU
    • C04B35/622
    • PROBLEM TO BE SOLVED: To provide a composite ceramic prepared by finely dispersing at least one of carbide ceramics into an oxide ceramic.
      SOLUTION: The composite ceramic is prepared by finely dispersing at least one of carbide ceramics in an amount of 1-20 vol% into an oxide ceramic. The composite ceramic has relative density when compared with theoretical density of 99% or more, has no coarse particles exceeding 5 μm composed of aggregated carbide, wherein at least one additional carbide particle is present in the region within 2 μm from any carbide particle. Thus, a sintered body can be obtained which is optimal for cutting tools, precision manufacturing tools, tools for manufacturing semiconductors, heat sinks, magnetic recording head substrates, etc.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供通过将至少一种碳化物陶瓷细分散到氧化物陶瓷中而制备的复合陶瓷。 解决方案:通过将至少一种1-20体积%的碳化物陶瓷细分散到氧化物陶瓷中来制备复合陶瓷。 与理论密度为99%以上相比,复合陶瓷具有相对密度,不存在由碳化物组成的粗大粒子超过5μm的粒子,其中,在距离任何碳化物粒子2μm以内的区域中至少存在一个以上的碳化物粒子。 因此,可以获得对于切割工具,精密制造工具,用于制造半导体的工具,散热器,磁记录头基板等的切割工具最佳的烧结体。(C)2008,JPO&INPIT
    • 44. 发明专利
    • Metallic die and its usage
    • 金属及其使用
    • JP2006334624A
    • 2006-12-14
    • JP2005161364
    • 2005-06-01
    • Nippon Tungsten Co Ltd日本タングステン株式会社
    • MINAMOTO KOUKI
    • B21J13/02B21D37/01B21D37/02
    • PROBLEM TO BE SOLVED: To provide a metallic die which does not apply a high tensile stress on a forming member, and further to provide its usage.
      SOLUTION: The metallic die comprises: a cylindrical shape forming member 3 having a forming cavity therein; an inner circumferential ring fitted so as to surround the circumference of the forming member 3; and an outer circumferential ring 1 fitted so as to surround the circumference of the inner circumferential ring. A compressive stress is applied to the forming member by utilizing the difference of the temperature around the metallic die and the thermal expansion coefficients of the inner circumferential ring, the outer circumferential ring, etc. composing the metallic die, and by the stress caused by the thermal deformation in the inner circumferential ring serving as a pressure applying structural member 2 having a pressure applying structure. The pressure applying structural member 2 has a structure in which slits are formed so as to vertically extend from the upper surface to the lower surface of the inner circumferential ring and so as to be perpendicular to the inner circumference and the outer circumference until the intermediate depths between them respectively are alternately arranged at an equal interval on the inner circumferential ring.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种在成形构件上不施加高拉伸应力的金属模具,并提供其用途。 解决方案:金属模具包括:圆柱形形状构件3,其中具有成形腔; 安装成围绕成形构件3的周缘的内周环; 以及围绕内周环的圆周的外周环1。 通过利用金属模具周围的温度差和构成金属模具的内周环,外周环等的热膨胀系数以及由金属模具的应力引起的应力,对成形构件施加压缩应力 作为具有压力施加结构的加压结构构件2的内周环的热变形。 压力施加结构构件2具有这样的结构,其形成为从内周环的上表面到下表面垂直延伸并且垂直于内圆周和外圆周直到中间深度 在它们之间分别在内周环上以相等的间隔交替布置。 版权所有(C)2007,JPO&INPIT
    • 47. 发明专利
    • Electrode for discharge lamp
    • 放电灯电极
    • JP2005285676A
    • 2005-10-13
    • JP2004100886
    • 2004-03-30
    • Nippon Tungsten Co Ltd日本タングステン株式会社
    • SHIBUYA TAKUJITERAMOTO SHUICHIMATSUO SHIGERUSAKAGUCHI SHIGEYA
    • H01J61/073H01J61/06
    • PROBLEM TO BE SOLVED: To solve the problem of joining a head and a foot, and the problem of the strength of the foot after securing a sealing property, which are not solved by a conventional technology, without using a radioactive element of thorium or the like.
      SOLUTION: The problems are solved by forming the head of an electrode for a discharge lamp and the foot holding the head and thinner than the foot into a jointless integral structure, and by using a tungsten based material having a re-crystallization temperature of 2,000°C or higher as a material for the structure. The electrode is obtained in which the strength of the foot is increased, the sealing property can be secured, and light emitting efficiency is high.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了解决头部和脚部的接合问题,以及在确保密封性能之后的强度的问题,这在现有技术中没有解决,而不使用放射性元素 钍等。 解决方案:通过将用于放电灯的电极的头部和将头部比脚部更薄的脚部形成为无接头整体结构来解决问题,并且通过使用具有再结晶温度的钨基材料 为2000℃以上。 得到电极,其中脚的强度增加,可以确保密封性能,并且发光效率高。 版权所有(C)2006,JPO&NCIPI
    • 49. 发明专利
    • Sliding member and manufacturing method thereof
    • 滑动构件及其制造方法
    • JP2005147343A
    • 2005-06-09
    • JP2003388759
    • 2003-11-19
    • Nippon Tungsten Co Ltd日本タングステン株式会社
    • KANEDA MOTOHIROMATSUDA KENJIIMAZATO SHUICHISAKAMOTO RYUICHI
    • F16C33/10B22F3/10B22F3/26C22C29/08F16J15/34
    • PROBLEM TO BE SOLVED: To provide a maintenance-free sliding member and an inexpensive manufacturing method thereof. SOLUTION: In this sliding member, air holes of hard material having communicating air holes with porosity of 1 to 40%, which is mainly composed of one or more kinds selected from carbides, nitrides or carbonic nitrides of 4a, 5a, 6a-group element metals, stainless steel, high speed steel and die steel are filled with In or an alloy containing 30 atom % In. Thus, this sliding member can be used as an alloy or ceramic member causing sliding in use, including sliding members such as a mechanical seal, a sleeve, and a bearing. Further, this member can be utilized for a sliding member favorably used in environments where an organic lubricant is not suitable such as a vacuum environment and a high-temperature environment over a long period of time. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供免维护滑动构件及其便宜的制造方法。 解决方案:在该滑动构件中,具有孔隙率为1〜40%的连通孔的硬质材料的气孔主要由选自4a,5a,6a的碳化物,氮化物或碳氮化物中的一种或多种组成 - 元素金属,不锈钢,高速钢和模具钢填充有In或含有30原子%In的合金。 因此,该滑动构件可以用作在使用中引起滑动的合金或陶瓷构件,包括诸如机械密封件,套筒和轴承的滑动构件。 此外,该构件可以用于在有机润滑剂不适合的环境中有利地使用的滑动构件,例如真空环境和长时间的高温环境。 版权所有(C)2005,JPO&NCIPI