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1. 发明授权

US4044056A Symmetrical aromatic sulfide production 失效
标题翻译：对称芳香族硫化物生产
公开(公告)号：US4044056A
公开(公告)日：1977-08-23
申请号：US688492
申请日：1976-05-20
申请人： Richard T. Hawkins
发明人： Richard T. Hawkins
IPC分类号： C07C148/00
CPC分类号： C07C321/00
摘要： Unsymmetrical aromatic sulfides are converted to symmetrical sulfides in a disproportionation reaction by heating, optionally in the presence of a free radical generator and/or oxygen-containing gas, at an elevated temperature and for a period of time sufficient to convert the unsymmetrical sulfides to symmetrical sulfides.
摘要翻译：任选在存在自由基发生剂和/或含氧气体的情况下，在升高的温度下加热非对称芳香族硫化物，在歧化反应中转化成对称的硫化物，并持续足以将非对称硫化物转化为对称的一段时间硫化物。

2. 发明授权

US4046749A Phenylene sulfide oligomer production 失效
标题翻译：苯硫醚低聚物生产
公开(公告)号：US4046749A
公开(公告)日：1977-09-06
申请号：US613669
申请日：1975-09-15
申请人： Richard T. Hawkins
发明人： Richard T. Hawkins
IPC分类号： C08G75/02 , C08G75/06 , C08F28/00
CPC分类号： C07C321/00 , C08G75/0272 , C08G75/0295
摘要： Phenylene sulfide oligomers are produced by heating at least one aromatic sulfide in an oxygen-containing gaseous atmosphere at an elevated temperature and for a period of time sufficient to form the oligomers. The oligomers can be cured by heating in an oxygen-containing atmosphere while the oligomers are being produced or in a subsequent step after production to yield cured oligomers having utility as coatings, films, and the like.
摘要翻译：通过在升高的温度下在含氧气体气氛中加热至少一种芳族硫化物并在足以形成低聚物的时间段内制备苯硫醚低聚物。低聚物可以在制造低聚物的同时在含氧气氛中加热或在生产后的后续步骤中固化，得到固化的低聚物作为涂料，薄膜等的用途。

3. 发明授权

US4477377A Recovery of cesium 失效
标题翻译：回收铯
公开(公告)号：US4477377A
公开(公告)日：1984-10-16
申请号：US389402
申请日：1982-06-17
申请人： Reed M. Izatt , James J. Christensen , Richard T. Hawkins
发明人： Reed M. Izatt , James J. Christensen , Richard T. Hawkins
IPC分类号： G21F9/00 , G21F9/04 , G21F9/12
CPC分类号： G21F9/007
摘要： A process of recovering cesium ions from mixtures of ions containing them and other ions, e.g., a solution of nuclear waste materials, which comprises establishing a separate source phase containing such a mixture of ions, establishing a separate recipient phase, establishing a liquid membrane phase in interfacial contact with said source and recipient phases, said membrane phase containing a ligand, preferably a selected calixarene as depicted in the drawing, maintaining said interfacial contact for a period of time long enough to transport by said ligand a substantial portion of the cesium ion from the source phase to the recipient phase, and recovering the cesium ion from the recipient phase. The separation of the source and recipient phases may be by the membrane phase only, e.g., where these aqueous phases are emulsified as dispersed phases in a continuous membrane phase, or may include a physical barrier as well, e.g., an open-top outer container with an inner open-ended container of smaller cross-section mounted in the outer container with its open bottom end spaced from and above the closed bottom of the outer container so that the membrane phase may fill the outer container to a level above the bottom of the inner container and have floating on its upper surface a source phase and a recipient phase separated by the wall of the inner container as a physical barrier. A preferred solvent for the ligand is a mixture of methylene chloride and carbon tetrachloride.
摘要翻译：从含有它们的离子和其它离子的混合物（例如核废料材料）的混合物中回收铯离子的方法，其包括建立包含这种离子混合物的单独的源相，建立单独的接收相，建立液膜相在与所述源和受体相的界面接触中，所述膜相含有配体，优选如图所示的选择的杯芳烃，将所述界面接触保持足够长的时间，以便通过所述配体输送大部分的铯离子从源相到接收相，并从接收相中回收铯离子。源和受体相的分离可以仅通过膜相，例如，当这些水相作为分散相乳化在连续的膜相中时，或者也可以包括物理屏障，例如开顶的外容器其具有安装在外部容器中的较小横截面的内开口容器，其开口底端与外部容器的封闭底部间隔开并且位于外部容器的封闭底部之上，使得膜相可以将外部容器填充到位于内部容器并且在其上表面上漂浮有源相和由内容器的壁分隔的接收体作为物理屏障。配体的优选溶剂是二氯甲烷和四氯化碳的混合物。

4. 外观设计

USD248554S Data terminal 失效
公开(公告)号：USD248554S
公开(公告)日：1978-07-18
申请号：US841550
申请日：1977-10-12
申请人： Richard T. Hawkins
设计人： Richard T. Hawkins

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