利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

245 条记录 (耗时 0.016 秒)

    Enclosure for a semiconductor device
    84.
    发明授权
    Enclosure for a semiconductor device 失效

    公开(公告)号：US06569380B2

    公开(公告)日：2003-05-27

    申请号：US09940049

    申请日：2001-08-27

    申请人： Kay-Leong Lim ,  Lye-King Tan ,  Eng-Seng Tan

    发明人： Kay-Leong Lim ,  Lye-King Tan ,  Eng-Seng Tan

    IPC分类号： B22F706

    CPC分类号： B22F3/225 ,  B22F7/06 ,  B22F7/062 ,  B22F2998/00 ,  B22F2998/10 ,  H01L21/4807 ,  H01L23/367 ,  H01L2924/0002 ,  Y10T428/12028 ,  B22F5/10 ,  B22F3/22 ,  B22F3/02 ,  B22F3/1021 ,  H01L2924/00

    摘要： A method to form a combined enclosure and heat sink structure for a semiconductor device is achieved. A first feedstock comprising a first mixture of powdered metal materials, lubricants, and binders is prepared. A second feedstock comprising a second mixture of powdered metal materials, lubricants, and binders is prepared such that the difference between the sintering shrinkage of each of the first and second feedstocks is less than 1%. The first and second feedstocks are pressed to form a first green part having an enclosure shape and a second green part having a heat sink shape. The lubricants and the binders from said first and second green parts are removed to form a first powdered skeleton and a second powdered skeleton. The first and second powdered skeletons are sintered to complete the combined enclosure and heat sink structure. The first and second powdered skeletons are in intimate contact during the sintering. Optionally, at least one hollow cooling channel is formed in the combine structure by burning away a fugitive plastic structure during the sintering process.

    Multi-armed chromophores with very large two-photon absorption cross-sections
    87.
    发明授权
    Multi-armed chromophores with very large two-photon absorption cross-sections 有权
    具有非常大的双光子吸收横截面的多臂发色团

    公开(公告)号：US06300502B1

    公开(公告)日：2001-10-09

    申请号：US09731549

    申请日：2000-12-08

    申请人： Ramamurthi Kannan ,  Bruce A. Reinhardt ,  Loon-Seng Tan

    发明人： Ramamurthi Kannan ,  Bruce A. Reinhardt ,  Loon-Seng Tan

    IPC分类号： C07D27766

    CPC分类号： C07D207/456

    摘要： Provided are chromophores with very large two-photon absorption cross-sections. One group of these chromophores has the formula: (T—Q)n—N—Phm wherein Q is a single bond or 1,4-phenylene, Ph is a phenyl group, n has a value of 1-3 and m has a value of 3−n, and wherein T is wherein R1 and R2 are alkyl groups having 1 to 20 carbon atoms, provided that when Q is a single bond, the value of n is 2 or 3. Another group of these chromophores has the formula: (T—Q)n—G—Phm wherein T is as defined above, Q is a single bond or 1,4-phenylene, Ph is a phenyl group, n has a value of 1-4 and m has a value of 4−n, and wherein G is a 4-arm core unit. Yet another group of these chromophores has the formula: (T—Q)n—G—Phm wherein T is as described previously, Q is a single bond or 1,4-phenylene, Ph is a phenyl group, n has a value of 1-6 and m has a value of 6−n, and wherein G is a 6-arm core unit.

    摘要翻译： 提供了具有非常大的双光子吸收横截面的发色团。 一组这些发色团具有下式：其中Q为单键或1,4-亚苯基，Ph为苯基，n为1-3，m为3-n的值，其中T为 R1和R2是具有1至20个碳原子的烷基，条件是当Q是单键时，n的值为2或3.这些发色团的另一组具有下式：其中T如上所定义，Q是 单键或1,4-亚苯基，Ph为苯基，n为1-4，m为4-n的值，G为4-臂核心单元。另一组这些发色团 具有下式：其中T如前所述，Q是单键或1,4-亚苯基，Ph是苯基，n的值为1-6，m的值为6-n，其中G 是一个6臂的核心单元。

    Bithienylnaphthalene-based monomers and polymers
    88.
    发明授权
    Bithienylnaphthalene-based monomers and polymers 失效
    双苯基萘基单体和聚合物

    公开(公告)号：US06291621B1

    公开(公告)日：2001-09-18

    申请号：US09255689

    申请日：1999-02-23

    申请人： Loon-Seng Tan ,  Balasubramanian Sankaran

    发明人： Loon-Seng Tan ,  Balasubramanian Sankaran

    IPC分类号： C08G7722

    CPC分类号： C08G65/22

    摘要： Provided are novel, electropolymerizable monomers of the formulae: wherein R1, R2 and R3 are selected from the group consisting of —H, —O(CH2)nCH3, wherein n has a value of 0 to 11 and m has a value of 1 to 4, and wherein no more than one of R2 and R3 is —H. Also provided are polymers resulting from the electropolymerization of these monomers.

    摘要翻译： 提供了下式的新的可电聚合的单体：其中R1，R2和R3选自-H，-O（CH2）nCH3，其中n具有0至11的值，m的值为1至 4，并且其中不超过一个R2和R3是-H。还提供了由这些单体的电聚合得到的聚合物。

    Aromatic polyamides containing keto-benzocyclobutene pendants
    90.
    发明授权
    Aromatic polyamides containing keto-benzocyclobutene pendants 失效
    含有酮 - 苯并环丁烯悬剂的芳香族聚酰胺

    公开(公告)号：US5514769A

    公开(公告)日：1996-05-07

    申请号：US492414

    申请日：1995-06-19

    申请人： Loon-Seng Tan ,  Narayanan Venkatasubramaian

    发明人： Loon-Seng Tan ,  Narayanan Venkatasubramaian

    IPC分类号： C08G69/32 ,  C08G69/40 ,  C08G69/00 ,  C08G73/12

    CPC分类号： C08G69/40 ,  C08G69/32

    摘要： A crosslinkable polymer having repeating units of the formula: ##STR1## wherein Ar is selected from the group consisting of ##STR2## These polymers are useful in the preparation of molecular composites with rigid-rod polymers, including para-oriented benzobisazole polymers, such as benzobisthiazole, benzobisoxazole and benzobisimidazole polymers.

    摘要翻译： 具有下式重复单元的可交联聚合物：其中Ar选自由下列组成的组：这些聚合物可用于制备具有刚性棒状聚合物的分子复合材料，包括对 - 苯并二唑，苯并二恶唑和苯并二咪唑聚合物。