利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

126 条记录 (耗时 0.041 秒)

    Membrane drying process and system
    61.
    发明授权
    Membrane drying process and system 失效
    膜干燥过程和系统

    公开(公告)号：US5084073A

    公开(公告)日：1992-01-28

    申请号：US596098

    申请日：1990-10-11

    申请人： Ravi Prasad

    发明人： Ravi Prasad

    IPC分类号： B01D53/22 ,  B01D53/26

    CPC分类号： B01D53/268 ,  B01D53/22

    摘要： Enhanced air drying or other gas purifications are achieved using purge gas, rather than product gas, to facilitate permeation in membrane systems having substrates adapted to achieve radial mixing and having countercurrent flow patterns and uniform flow of gas over the surface of the membranes.

    Process for removal of basic materials
    62.
    发明授权
    Process for removal of basic materials 失效
    去除基本材料的工艺

    公开(公告)号：US5018540A

    公开(公告)日：1991-05-28

    申请号：US122761

    申请日：1987-11-19

    申请人： Harvey J. Grubbs ,  Ravi Prasad ,  Tony M. Howell

    发明人： Harvey J. Grubbs ,  Ravi Prasad ,  Tony M. Howell

    IPC分类号： A24B15/24 ,  C11B9/02

    CPC分类号： A24B15/24 ,  C11B9/02

    摘要： A process is provided for the selective removal of basic materials from plant products, in particular, for removing nicotine from tobacco without materially affecting the content of the other components of the tobacco. Tobacco is traversed with a solvent at high pressure and in a physical state which is either a liquid at a pressure of from about 500-300 atmospheres or a supercritical fluid wherein nicotine and the other components dissolve in the solvent. As the single means of removing substances from the solvent, the solvent is then passed through an acid-containing trap where the solvent is essentially freed of nicotine. The solvent, depleted of nicotine and enriched in the other components, is then recycled to the tobacco to reextract nicotine. In addition, the tobacco may be pretreated with a chemical base which does not substantially react with the tobacco components under ambient conditions and which are not necessarily affected by the process conditions but are nonetheless effective in increasing the amount of nicotine which can be extracted by the process of this invention. Pretreatment of the tobacco with a chemical base neutralizes nicotine salts and permits the extraction process to be carried out under milder conditions.

    摘要翻译： 提供了一种用于从植物产品中选择性地除去碱性物质的方法，特别是用于从烟草中除去尼古丁，而不会对烟草的其它成分的含量产生重大影响。 在高压和物理状态下，烟草是以约500-300大气压的液体或其中尼古丁和其他组分溶解在溶剂中的超临界流体的方式穿过的。 作为从溶剂中除去物质的单一方法，然后将溶剂通过含酸捕集器，其中溶剂基​​本上不含尼古丁。 然后将耗尽尼古丁和富集其他组分的溶剂再循环到烟草中以重新提炼尼古丁。 此外，烟草可以用在环境条件下基本上不与烟草成分反应的化学基料进行预处理，而这些碱不一定受工艺条件的影响，但是对于增加尼古丁可以提取的尼古丁的量是有效的 本发明的方法。 用化学碱处理烟草中和尼古丁盐，并允许在更温和的条件下进行提取过程。

    Decaffeination of aqueous extracts
    64.
    发明授权
    Decaffeination of aqueous extracts 失效
    含水提取物的脱咖啡因

    公开(公告)号：US4246291A

    公开(公告)日：1981-01-20

    申请号：US23878

    申请日：1979-03-26

    申请人： Ravi Prasad ,  Martin Gottesman ,  Robert A. Scarella

    发明人： Ravi Prasad ,  Martin Gottesman ,  Robert A. Scarella

    IPC分类号： A23F5/22 ,  A23F5/50 ,  B01D11/02 ,  A23F5/18

    CPC分类号： A23F5/226 ,  A23F5/505 ,  B01D11/0203

    摘要： Aqueous extracts of roasted coffee are stripped of aroma, concentrated and thereafter decaffeinated by means of contact with a decaffeinating fluid such as liquid or supercritical carbon dioxide. Aroma loss is minimized by using water to remove caffeine and aroma from the CO.sub.2 stream, recovering aromatics from this caffeine-containing aqueous stream and adding-back these aromatics to the decaffeinated extract. Preferably equipment cost is minimized by use of a single pressure vessel to transfer the caffeine from the extract stream to the CO.sub.2 and from the CO.sub.2 to the water stream.

    摘要翻译： 将咖啡的水提取物除去香气，浓缩，然后通过与脱咖啡因流体如液体或超临界二氧化碳的接触而脱咖啡因。 通过使用水从CO 2流中除去咖啡因和香气，从含咖啡因的含水流中回收芳烃并将这些芳族化合物加入到脱咖啡因的提取物中，使香气损失最小化。 优选地，通过使用单个压力容器将咖啡因从提取物流转移到CO 2和从CO 2到水流来最小化设备成本。

    Inkjet ink for use on polymeric substrate
    66.
    发明授权
    Inkjet ink for use on polymeric substrate 有权
    用于聚合物基材上的喷墨油墨

    公开(公告)号：US07465343B2

    公开(公告)日：2008-12-16

    申请号：US11128480

    申请日：2005-05-13

    申请人： Ravi Prasad ,  Paul McClelland

    发明人： Ravi Prasad ,  Paul McClelland

    IPC分类号： C09D11/02

    CPC分类号： C09D11/38

    摘要： An ink for use in an inkjet printer and for printing on a polymeric substrate, comprises a swelling agent, selected and provided in sufficient amount to enable said colorant to enter the surface of the substrate, a colorant dispersed or dissolved in the swelling agent, and an inkjet-enabling additive. The swelling agent is selected and provided in sufficient amount to enable the colorant to enter the surface of the substrate.

    摘要翻译： 用于喷墨打印机并用于在聚合物基材上印刷的油墨包括溶胀剂，其选择和提供足够量以使所述着色剂能够进入基材表面，分散或溶解在溶胀剂中的着色剂，以及 喷墨启用添加剂。 选择和提供溶胀剂足够的量使得着色剂能够进入基材的表面。

    Optically retro-reflecting sphere
    67.
    发明授权
    Optically retro-reflecting sphere 有权
    光学反光球体

    公开(公告)号：US07224533B2

    公开(公告)日：2007-05-29

    申请号：US10984344

    申请日：2004-11-08

    申请人： Scott Lerner ,  Tim R. Koch ,  Ravi Prasad

    发明人： Scott Lerner ,  Tim R. Koch ,  Ravi Prasad

    IPC分类号： G02B5/126 ,  G02B17/00 ,  G02B3/00

    CPC分类号： C03C12/02 ,  G02B5/126 ,  G02B5/128

    摘要： An optically retro-reflecting sphere includes an inner sphere and an outer concentric spherical shell, and can be coupled to a reflective surface. Light entering the optically retro-reflecting sphere from an incident direction is reflected by the sphere generally towards an exit direction, where the exit direction is parallel and opposite to the incident direction. The inner sphere and outer shell have different refractive indices, selected so that the reflected light is reflected with a non-uniform angular distribution about the exit direction.

    摘要翻译： 光反射反射球包括内球和外同心球壳，并且可以耦合到反射表面。 从入射方向进入光学回射反射球的光通常由球体朝向出射方向反射，其中出射方向平行并与入射方向相反。 内球体和外壳具有不同的折射率，被选择为使得反射光以围绕出射方向的不均匀的角度分布被反射。