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    • 53. 发明申请
    • GUIDEWIRE WITH INTEGRAL RADIOPAQUE MARKERS
    • GUIDEWIRE与INTEGRAL RADIOPAQUE MARKERS
    • US20160250450A1
    • 2016-09-01
    • US15149882
    • 2016-05-09
    • Medtronic Vascular, Inc.
    • Mark StigerRichard Thomas
    • A61M25/09A61L31/02A61L31/18C23F4/00A61L31/14
    • Embodiments hereof relate to a guidewire formed from an elongated shaft, at least a portion of the shaft having an outer layer, a plurality of channels formed through the outer layer, and an inner core. The outer layer is formed from a material non susceptible to erosion by an erosion agent and the inner core is formed from a radiopaque material susceptible to erosion by the erosion agent. When exposed to the erosion agent, core material adjacent to the channels is removed to form a pattern of integral radiopaque segments or markers with a plurality of voids therebetween. By controlling the location of channels and the rate of erosion of the core material, the pattern of integral radiopaque segments and voids allow for in situ measurement when viewed under fluoroscopy.
    • 本发明的实施方案涉及由细长轴形成的导丝,所述轴的至少一部分具有外层,穿过外层形成的多个通道和内芯。 外层由不易受侵蚀剂侵蚀的材料形成,内芯由易受腐蚀剂腐蚀的不透射线材料形成。 当暴露于侵蚀剂时,除去与通道相邻的芯材料以形成其间具有多个空隙的整体不透射线段或标记的图案。 通过控制通道的位置和芯材的侵蚀速率,整体不透射线段和空隙的图案允许在荧光透视下观察时的原位测量。
    • 60. 发明授权
    • Technique for etching monolayer and multilayer materials
    • 蚀刻单层和多层材料的技术
    • US09153453B2
    • 2015-10-06
    • US13371124
    • 2012-02-10
    • Nathalie C. D. BouetRaymond P. ConleyRalu DivanAlbert Macrander
    • Nathalie C. D. BouetRaymond P. ConleyRalu DivanAlbert Macrander
    • H01L23/58H01L21/3065G21K1/06H01L21/3213C23F4/00B82Y10/00
    • H01L21/3065B82Y10/00C23F4/00G21K1/062G21K2201/067H01L21/32137
    • A process is disclosed for sectioning by etching of monolayers and multilayers using an RIE technique with fluorine-based chemistry. In one embodiment, the process uses Reactive Ion Etching (RIE) alone or in combination with Inductively Coupled Plasma (ICP) using fluorine-based chemistry alone and using sufficient power to provide high ion energy to increase the etching rate and to obtain deeper anisotropic etching. In a second embodiment, a process is provided for sectioning of WSi2/Si multilayers using RIE in combination with ICP using a combination of fluorine-based and chlorine-based chemistries and using RF power and ICP power. According to the second embodiment, a high level of vertical anisotropy is achieved by a ratio of three gases; namely, CHF3, Cl2, and O2 with RF and ICP. Additionally, in conjunction with the second embodiment, a passivation layer can be formed on the surface of the multilayer which aids in anisotropic profile generation.
    • 公开了通过使用具有氟基化学的RIE技术通过蚀刻单层和多层进行切片的方法。 在一个实施方案中,该方法单独使用反应离子蚀刻(RIE)或与使用氟基化学的电感耦合等离子体(ICP)组合使用,并且使用足够的功率提供高离子能量以增加蚀刻速率并获得更深的各向异性蚀刻 。 在第二实施例中,提供了使用RIE与ICP结合使用氟基和氯基化学物质并使用RF功率和ICP功率的WSI2 / Si多层的切片的方法。 根据第二实施例,通过三种气体的比例实现高水平的垂直各向异性; 即CHF3,Cl2和O2与RF和ICP。 另外,结合第二实施例,可以在有助于各向异性轮廓生成的多层的表面上形成钝化层。