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    Cement for cathode blocks
    2.
    发明授权
    Cement for cathode blocks 失效
    阴极块水泥

    公开(公告)号：US4816511A

    公开(公告)日：1989-03-28

    申请号：US171692

    申请日：1988-03-22

    申请人： Lise Castonguay ,  Sadashiv Nadkarni ,  Mukesh Jain

    发明人： Lise Castonguay ,  Sadashiv Nadkarni ,  Mukesh Jain

    IPC分类号： C04B37/00 ,  C08K3/04

    CPC分类号： C04B37/005 ,  C04B26/122 ,  C04B2237/086 ,  C04B2237/363 ,  C04B2237/708 ,  Y10S524/906

    摘要： A cement for bonding carbon blocks, particularly the cathode blocks of electrolytic cells, e.g. Hall-Heroult cells used for the production of aluminum. The cement comprises a carbonaceous aggregate of particle size smaller than 48 Tyler mesh, a curable water-soluble liquid polymeric resin (preferably a phenol-formaldehyde resin), water and normally a curing agent for the resin. The water is used in such an amount that the proportion of the resin can be reduced without adversely affecting the viscosity of the cement at ambient temperature. The cement carbonizes when the carbon blocks are subjected to high temperatures and has a linear shrinkage of less than 5%, which reduces the tendency of the carbonized cement to crack.

    Process for producing small particles of aluminum nitride and particles so-produced
    6.
    发明授权
    Process for producing small particles of aluminum nitride and particles so-produced 失效
    生产氮化铝微粒和颗粒的方法

    公开(公告)号：US5246683A

    公开(公告)日：1993-09-21

    申请号：US956054

    申请日：1992-10-02

    申请人： Luc Parent ,  Mukesh Jain

    发明人： Luc Parent ,  Mukesh Jain

    IPC分类号： C01B21/072

    CPC分类号： C01B21/0726 ,  C01P2004/03 ,  C01P2004/61

    摘要： A process for producing small particles of aluminum nitride suitable for sintering and the particles thus-produced. The process comprises reacting particles of gamma alumina, or a precursor thereof, of less than 1 micron in size with a stoichiometrical excess of finely divided carbon in the presence of nitrogen, or a precursor which provides nitrogen in the reaction conditions, first at a temperature in the range of 1550.degree. to 1700.degree. C. for a period of between 1 and 6 (preferably 1 to 4) hours and then at a temperature in the range of 1750.degree. to 1850.degree. C. for a period of 1 to 4 (preferably 1 to 2) hours, followed by cooling said reaction mixture and reheating to a temperature in the range of 500.degree. to 700.degree. C. in an oxygen-containing atmosphere, and maintaining the temperature until excess unreacted carbon is removed. The alumina or precursor preferably has a particle size of less than 400 nm and the carbon source preferably contains iron as an impurity, and is preferably petroleum coke. The AlN product is particularly suited for use in forming a substrate for electronic components by a process involving sintering of the AlN particles because of the small size (less than 2 microns) and narrow size distribution of the particles.

    摘要翻译： 适合于烧结的氮化铝的小颗粒的生产方法和由此生产的颗粒。 该方法包括将大小为1微米的γ氧化铝或其前体的颗粒与在氮气存在下的化学计量过量的细碎碳或在反应条件下提供氮的前体反应，首先在温度 在1550℃至1700℃的范围内，时间为1至6（优选1至4小时），然后在1750℃至1850℃的温度下进行1至4（ 优选1〜2小时），然后冷却所述反应混合物并在含氧气氛中再加热至500℃至700℃的温度，并保持温度直至过量未反应的碳被除去。 优选氧化铝或前体的粒度小于400nm，碳源优选含有作为杂质的铁，优选为石油焦。 AlN产品特别适合用于通过包括烧结AlN颗粒的方法形成用于电子部件的基板，因为AlN颗粒的尺寸（小于2微米）小，颗粒尺寸分布窄。

    Process for producing silicon carbide and metal carbides
    7.
    发明授权
    Process for producing silicon carbide and metal carbides 失效
    生产碳化硅和金属碳化物的方法

    公开(公告)号：US4948573A

    公开(公告)日：1990-08-14

    申请号：US355033

    申请日：1989-05-16

    申请人： Sadashiv Nadkarni ,  Mukesh Jain ,  Jean-Paul Huni

    发明人： Sadashiv Nadkarni ,  Mukesh Jain ,  Jean-Paul Huni

    IPC分类号： C01B31/30 ,  C01B31/34 ,  C01B31/36 ,  C30B25/00

    CPC分类号： C01B31/36 ,  C01B31/30 ,  C01B31/303 ,  C01B31/305 ,  C01B31/34 ,  C30B25/005 ,  C30B29/36 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/52 ,  C01P2004/54 ,  C01P2004/62

    摘要： A process for forming carbides of silicon or metals in fine powder or whisker form. The process comprises forming a substantially uniform and non-agglomerated dispersion of a microfine powder of an oxide of silicon or a carbide-forming metal within a matrix of a polymer, carbonizing the oxide-containing polymer in an inert atmosphere and heating the carbonized product at high temperature to cause the oxide to react with carbon to form a carbide. The polymer must have a molecular weight of at least 10,000, a high carbon yield of at least 30% by weight, and a chemical structure which is infusible or capable of being rendered infusible. The preferred polymers are polyacrylonitrile, cellulose and polyvinyl alcohol, but other polymers with similar characteristics can be employed. The process is relatively inexpensive and gives an extremely finely divided product of high purity.

    摘要翻译： 一种以细粉末或晶须形式形成硅或金属的碳化物的方法。 该方法包括在聚合物的基体内形成硅或碳化物形成金属的氧化物的微细粉末的基本均匀和非附聚的分散体，在惰性气氛中碳化含氧化物的聚合物，并将碳化产物加热 高温使氧化物与碳反应形成碳化物。 聚合物必须具有至少10,000的分子量，至少30重量％的高碳产率，以及不熔或能够变得不可熔的化学结构。 优选的聚合物是聚丙烯腈，纤维素和聚乙烯醇，但是可以使用具有相似特性的其它聚合物。 该方法相对便宜并且产生了高纯度的极细分产品。

    Hollow microspheres
    8.
    发明授权
    Hollow microspheres 失效
    空心微球

    公开(公告)号：US4859711A

    公开(公告)日：1989-08-22

    申请号：US221135

    申请日：1988-07-19

    申请人： Mukesh Jain ,  Sadashiv Nadkarni

    发明人： Mukesh Jain ,  Sadashiv Nadkarni

    IPC分类号： B01J13/12 ,  B01J13/20 ,  C08J3/14 ,  C08J9/08

    CPC分类号： C08J3/14 ,  B01J13/12 ,  B01J13/20 ,  C08J9/08

    摘要： A process of forming hollow microspheres containing carbon or a polymer which is a carbon precursor. The process comprises forming a solution in a liquid solvent of a polymer having the following properties (a) a molecular weight of at least 10,000 and a long chain structure; (b) an ability to be coagulated by or precipitated from the solution by a non-solvent for the polymer; (c) an ability to form a continuous stretchable film when coagulated or precipitated from solution; (d) a chemical structure which is infusible or capable of being rendered infusible, and (e) a high carbon yield of at least 30% by weight upon being carbonized in a non-reactive atmosphere. An insoluble particulate blowing agent is incorporated into the solution and the solution is then divided into droplets and the droplets are introduced into a liquid bath containing a suitable non-solvent for the polymer. The non-solvent causes the polymer to precipitate or coagulate rapidly and simultaneously the blowing agent is decomposed to generate a gas within the droplets so that hollow microspheres are formed. The microspheres are then optionally subjected to carbonization in a non-reactive atmosphere at high temperature to convert the polymer to carbon. Uniformly-sized relatively large hollow microspheres can be produced by this process.

    摘要翻译： 一种形成含有碳或作为碳前体的聚合物的中空微球的方法。 该方法包括在具有以下特性（a）至少10,000的分子量和长链结构的聚合物的液体溶剂中形成溶液; （b）通过聚合物的非溶剂使溶液凝固或沉淀的能力; （c）当从溶液凝结或沉淀时形成连续拉伸膜的能力; （d）不熔或能够熔化的化学结构，和（e）在非反应性气氛中碳化时，至少30重量％的高碳产率。 将不溶性颗粒发泡剂并入溶液中，然后将溶液分成液滴，并将液滴引入包含用于聚合物的合适的非溶剂的液体浴中。 非溶剂导致聚合物快速沉淀或凝结，同时发泡剂分解以在液滴内产生气体，从而形成中空微球体。 然后任选地在非反应性气氛中在高温下将微球碳化，以将聚合物转化为碳。 可以通过该方法制造均匀尺寸的相对较大的中空微球。

    In vitro differentiation of vascular smooth muscle cells, methods and reagents related thereto
    9.
    发明申请
    In vitro differentiation of vascular smooth muscle cells, methods and reagents related thereto 审中-公开
    血管平滑肌细胞的体外分化，与其相关的方法和试剂

    公开(公告)号：US20070065829A1

    公开(公告)日：2007-03-22

    申请号：US10693316

    申请日：2003-10-23

    申请人： Mu-En Lee ,  Mukesh Jain ,  Masafumi Watanabe

    发明人： Mu-En Lee ,  Mukesh Jain ,  Masafumi Watanabe

    IPC分类号： C12Q1/68 ,  C12N5/08

    CPC分类号： G01N33/5061 ,  C07K14/47 ,  C07K2319/00 ,  C12N5/0691 ,  C12N2506/08 ,  C12N2510/04 ,  C12Q1/48 ,  G01N33/5008 ,  G01N33/5011 ,  G01N33/502 ,  G01N33/5023 ,  G01N33/5029 ,  G01N33/5073 ,  G01N2333/4712 ,  G01N2333/495 ,  G01N2333/70546 ,  G01N2333/71

    摘要： This invention is directed to an in vitro system for rapidly and uniformly inducing immortalized neural crest cells to differentiate to vascular smooth muscle cells. As excessive proliferation of vascular smooth muscle cells is a phenotypic response to the development of occlusive arteriosclerotic disease, the in vitro system of this invention is used to identify molecular regulators of smooth muscle cell development and differentiation. As the molecular regulators of smooth muscle cell differentiation are identified, the invention also encompasses methods to isolate the genes coding for these regulators. This invention also relates to molecules identified through the use of the invention's in vitro system, as well as to compounds that inhibit or regulate the identified molecules.

    摘要翻译： 本发明涉及用于快速且均匀地诱导永生化神经嵴细胞分化成血管平滑肌细胞的体外系统。 由于血管平滑肌细胞的过度增殖是对闭塞性动脉硬化性疾病发展的表型反应，本发明的体外系统用于鉴定平滑肌细胞发育和分化的分子调节剂。 当鉴定出平滑肌细胞分化的分子调节剂时，本发明还包括分离编码这些调节物的基因的方法。 本发明还涉及通过使用本发明的体外系统鉴定的分子，以及抑制或调节所鉴定的分子的化合物。