Silicon microstructures and process for their fabrication
    51.
    发明授权
    Silicon microstructures and process for their fabrication 失效
    硅微观结构及其制造工艺

    公开(公告)号:US5804314A

    公开(公告)日:1998-09-08

    申请号:US216206

    申请日:1994-03-22

    Abstract: A flexible and efficient bulk micromachining method for fabricating a novel microstructure that is bounded by substantially planar surfaces meeting only at substantially right angle corner features. The novel microstructure of the present invention is useful as a spacer in assembly processes where high accuracy is required, such as precise positioning of optical fibers or conductors. In the preferred embodiment, the microstructure of the present invention includes a shelf feature disposed along a height dimension of the microstructure, which is required for some applications. The bulk micromachining method of the present invention includes providing a first substrate having a top planar surface and an opposing planar surface. The opposing surface of the substrate is anisotropically etched to provide a first thinned region. The top surface of the first substrate is anisotropically etched so that a first recessed feature having a vertical side is made integral with the first thinned region. Similarly, a second substrate having a top planar surface and an opposing planar surface is provided. The opposing surface of the second substrate is anisotropically etched to provide a second thinned region. The top surface of the second substrate is anisotropically etched so that a second recessed feature having a vertical side wall is made integral with the second thinned region. The top surface of the first substrate is aligned and coupled with the top surface of the second substrate to produce the desired microstructure. The substrates are cut or sawn to free the microstructure.

    Abstract translation: 一种柔性和有效的体微加工方法,用于制造由基本上平坦的表面限定的新颖微结构,其仅在基本上直角的角部特征处会合。 本发明的新型微结构作为需要高精度的组装工艺中的间隔物是有用的,例如光纤或导体的精确定位。 在优选实施例中,本发明的微结构包括沿着微结构的高度尺寸设置的搁架特征,这对于一些应用是必需的。 本发明的体积微加工方法包括提供具有顶部平坦表面和相对的平坦表面的第一基底。 各向异性蚀刻衬底的相对表面以提供第一变薄区域。 第一衬底的顶表面被各向异性蚀刻,使得具有垂直侧的第一凹陷特征与第一变薄区域成一体。 类似地,提供了具有顶部平坦表面和相对的平坦表面的第二基板。 第二基板的相对表面被各向异性地蚀刻以提供第二变薄区域。 第二基板的顶表面被各向异性地蚀刻,使得具有垂直侧壁的第二凹陷特征与第二变薄区域成一体。 第一衬底的顶表面与第二衬底的顶表面对齐并耦合以产生所需的微结构。 将基材切割或锯切以释放微结构。

    Thermally actuated micromachined microwave switch
    52.
    发明授权
    Thermally actuated micromachined microwave switch 失效
    热力微加工微波开关

    公开(公告)号:US5467067A

    公开(公告)日:1995-11-14

    申请号:US212544

    申请日:1994-03-14

    CPC classification number: H01H61/04 H01H1/0036 H01P1/10 H01H2061/006

    Abstract: An integration of a micromachined actuator and a signal transmission structure includes a thermal actuator on a side of a displaceable signal line opposite to a fixed signal line. The actuator includes first and second legs. The first leg has a cross-sectional area greater than the second leg, providing a differential in electrical resistance. As current is channeled through the legs, the second leg will elongate more and will deflect both of the legs. The deflection is in a direction to press the displaceable signal line into signal communication with the fixed signal line. Optionally, a thermally operated reset actuator can be positioned to provide a mechanical return of the displaceable signal line. In a preferred embodiment, a microwave transmission environment is provided.

    Abstract translation: 微加工致动器和信号传输结构的集成包括在与固定信号线相对的位移信号线的一侧上的热致动器。 致动器包括第一和第二腿。 第一支腿具有大于第二支腿的横截面积,提供电阻差。 当电流通过腿部引导时,第二条腿将伸长并且将使两条腿偏转。 偏转方向将可移动信号线按压到与固定信号线的信号通信。 可选地,热操作的复位致动器可以被定位成提供可移位信号线的机械返回。 在优选实施例中,提供微波传输环境。

    Sulfur removal systems for protection of reforming crystals
    53.
    发明授权
    Sulfur removal systems for protection of reforming crystals 失效
    用于保护重整晶体的除硫系统

    公开(公告)号:US5439583A

    公开(公告)日:1995-08-08

    申请号:US243

    申请日:1993-01-04

    CPC classification number: C10G59/02 C10G69/08

    Abstract: A process is disclosed for removing residual sulfur from a hydrotreated naphtha feedstock. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst to convert trace sulfur compounds to H.sub.2 S, and to form a first effluent. The first effluent is contacted with a solid sulfur sorbent to remove the H.sub.2 S and form a second effluent. The second effluent is then contacted with a highly selective reforming catalyst under severe reforming conditions. Also disclosed is a method using a potassium containing sulfur sorbent made from nitrogen-free potassium compounds.

    Abstract translation: 公开了从加氢处理的石脑油原料中除去残余硫的方法。 在重硫条件下,在较少硫敏感的重整催化剂的存在下,原料与分子氢接触,以将痕量硫化合物转化为H 2 S,并形成第一流出物。 将第一流出物与固体硫吸附剂接触以除去H 2 S并形成第二流出物。 然后在严格的重整条件下将第二流出物与高度选择性的重整催化剂接触。 还公开了使用由无氮钾化合物制成的含钾硫吸附剂的方法。

    Sulfur removal system for protection of reforming catalysts
    54.
    发明授权
    Sulfur removal system for protection of reforming catalysts 失效
    用于保护重整催化剂的脱硫系统

    公开(公告)号:US5259946A

    公开(公告)日:1993-11-09

    申请号:US953192

    申请日:1992-09-29

    CPC classification number: C10G59/02 C10G69/08

    Abstract: A process for removing residual sulfur from a hydrotreated naphtha feedstock is disclosed. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst, thereby converting trace sulfur compounds to H.sub.2 S, and forming a first effluent. The first effluent is contacted with a solid sulfur sorbent, removing the H.sub.2 S and forming a second effluent. The second effluent is contacted with a highly selective reforming catalyst under severe reforming conditions.

    Abstract translation: 公开了从加氢处理的石脑油原料中除去残余硫的方法。 在重硫条件下,在较少硫敏感的重整催化剂的存在下,原料与分子氢接触,从而将痕量硫化合物转化为H 2 S,并形成第一流出物。 将第一流出物与固体硫吸附剂接触,除去H 2 S并形成第二流出物。 在严格的重整条件下,将第二流出物与高度选择性的重整催化剂接触。

    Process for removing sulfur from a hydrocarbon feedstream using a sulfur
sorbent with alkali metal components or alkaline earth metal components
    55.
    发明授权
    Process for removing sulfur from a hydrocarbon feedstream using a sulfur sorbent with alkali metal components or alkaline earth metal components 失效
    使用具有碱金属组分或碱土金属组分的硫吸附剂从烃进料流中除去硫的方法

    公开(公告)号:US5059304A

    公开(公告)日:1991-10-22

    申请号:US277932

    申请日:1988-11-30

    Inventor: Leslie A. Field

    CPC classification number: C10G61/06

    Abstract: A process is disclosed for removing sulfur from a naphtha feedstream comprising contacting a naphtha feed with a platinum on alumina sulfur conversion catalyst under mild reforming conditions so that thiophenic and other organic sulfur compounds are converted to hydrogen sulfide without any significant cracking of the naphtha feed. Thereafter, the naphtha feed stream is contacted with a sulfur sorbent that has a metal component selected from Group I-A or Group II-A of the Periodic Table supported on a refractory inorganic oxide support, to remove hydrogen sulfide from the naphtha feed.

    Abstract translation: 公开了一种用于从石脑油原料流中除去硫的方法,包括在温和重整条件下使石脑油进料与氧化铝上的硫转化催化剂接触,以使噻吩和其它有机硫化合物转化为硫化氢,而没有明显的石脑油进料裂化。 此后,将石脑油进料流与硫磺吸附剂接触,硫磺吸附剂具有选自负责在耐火无机氧化物载体上的周期表的I-A族或II-A族的金属组分,以从石脑油进料中除去硫化氢。

    Alkylaromatic dealkylation
    56.
    发明授权
    Alkylaromatic dealkylation 失效
    烷基芳基脱烷基化

    公开(公告)号:US4560820A

    公开(公告)日:1985-12-24

    申请号:US664658

    申请日:1984-10-25

    Inventor: Leslie A. Field

    CPC classification number: C07C4/18 C07C2527/08 C07C2529/035 C07C2529/40

    Abstract: A process for dealkylating alkylaromatic hydrocarbons using intermediate pore size zeolites substantially free of acidity is disclosed.

    Abstract translation: 公开了使用基本上不含酸的中等孔径沸石使烷基芳族烃脱烷基化的方法。

    Pretreatment method for increasing conversion of reforming catalyst
    57.
    发明授权
    Pretreatment method for increasing conversion of reforming catalyst 失效
    改善催化剂转化率的预处理方法

    公开(公告)号:US4539304A

    公开(公告)日:1985-09-03

    申请号:US587419

    申请日:1984-03-08

    Inventor: Leslie A. Field

    CPC classification number: C10G35/095 B01J29/12 B01J29/62 B01J29/08

    Abstract: A pretreatment process is disclosed for increasing conversion of reforming catalysts wherein the catalyst is treated at from 120.degree. C. to 260.degree. C.; then the temperature of the treated catalyst is maintained at a temperature of from 370.degree. C. to 600.degree. C. in a reducing atmosphere prior to starting the hydrocarbon feed. Preferably, the catalyst is treated in the presence of hydrogen at atmospheric pressure for at least twenty minutes; then the temperature of the treated catalyst is maintained at 475.degree. C. in a reducing atmosphere for at least ten minutes prior to starting the hydrocarbon feed.

    Abstract translation: 公开了用于提高转化催化剂的转化率的预处理方法,其中催化剂在120℃至260℃下处理; 然后在开始烃进料之前,在还原气氛中将处理过的催化剂的温度保持在370℃至600℃的温度。 优选地,催化剂在氢气存在下在大气压下处理至少20分钟; 然后将处理过的催化剂的温度在还原气氛中在475℃保持至少十分钟,然后再开始进料。

    Two-step reforming process
    58.
    发明授权
    Two-step reforming process 失效
    两步改造过程

    公开(公告)号:US4443326A

    公开(公告)日:1984-04-17

    申请号:US465406

    申请日:1983-02-10

    Inventor: Leslie A. Field

    CPC classification number: C10G35/095 C10G59/02

    Abstract: A hydrocarbon conversion process is disclosed wherein a hydrocarbon feed is contacted with a dehydrocyclization catalyst containing a large-pore zeolite and a Group VIII metal, then the resulting reformate is upgraded using an intermediate pore size zeolite.

    Abstract translation: 公开了一种碳氢化合物转化方法,其中烃进料与含有大孔沸石和VIII族金属的脱氢环化催化剂接触,然后使用中等孔径的沸石来提高得到的重整油。

Patent Agency Ranking