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1. 发明授权

US5141543A Use of liquefied natural gas (LNG) coupled with a cold expander to produce liquid nitrogen 失效
标题翻译：使用与冷膨胀器相连的液化天然气（LNG）产生液氮
公开(公告)号：US5141543A
公开(公告)日：1992-08-25
申请号：US691773
申请日：1991-04-26
申请人： Rakesh Agrawal , Thomas E. Cormier, Sr.
发明人： Rakesh Agrawal , Thomas E. Cormier, Sr.
IPC分类号： F25J3/04 , F17C9/04 , F25J1/02
CPC分类号： F25J3/04351 , F17C9/04 , F25J1/0015 , F25J1/0037 , F25J1/004 , F25J1/0042 , F25J1/0224 , F25J1/0234 , F25J1/0292 , F25J3/0406 , F25J3/0409 , F25J3/04224 , F25J3/04266 , F25J3/04387 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0123 , F17C2227/0309 , F17C2265/05 , F25J2210/50 , F25J2210/62 , F25J2230/08 , F25J2230/42 , F25J2240/12 , F25J2245/42 , F25J2245/90
摘要： The present invention relates to a process for the liquefaction of a nitrogen stream produced by separating air components, by using the combination of cryogenic distillation with improved refrigeration. Very cold liquefied natural gas (LNG) is employed as refrigerant, with the LNG currently being revaporized for transportation.Multi-stage component compression is used, with the component feed to each compression stage being precooled using sequential refrigeration from the LNG. Expander means for the coldest air component product stream provides supplemental refrigeration at the cold end beyond that which is available from the refrigerant LNG.In a preferred embodiment, the feed nitrogen stream(s) are compressed to at least 300 psi in a multi-stage compressor with interstage cooling provided by heat exchange against vaporizing LNG; the resulting compressed stream is directed into first and second nitrogen substreams, followed by further cooling of the first substream by heat exchange against vaporizing LNG and then expanding the cooled first substream to produce an expanded nitrogen substream. Condensing of the second compressed substream against both vaporizing LNG and the expanded nitrogen substream is carried out. Reducing the pressure of the condensed second nitrogen substream produces a two phase nitrogen stream. Phase separation yields a recyclable nitrogen vapor stream and a liquid nitrogen stream as product.
摘要翻译：本发明涉及通过使用低温蒸馏与改进的制冷的组合分离空气组分而产生的氮气流的液化方法。使用非常冷的液化天然气（LNG）作为制冷剂，目前LNG正在进行再蒸发运输。使用多级部件压缩，使用来自LNG的顺序制冷将每个压缩级的分量进料预冷却。用于最冷空气组分产物流的膨胀器意味着在冷端超过可从制冷剂LNG获得的冷却的补充制冷。在一个优选的实施方案中，在多级压缩机中将进料氮气流压缩至至少300psi，其中通过与蒸发的LNG进行热交换而提供级间冷却; 将所得压缩流引导到第一和第二氮气流中，随后通过与汽化LNG的热交换进一步冷却第一子流，然后使冷却的第一子流扩展以产生膨胀的氮气流。执行第二压缩子流对蒸发LNG和膨胀氮气流的冷凝。减少浓缩的第二氮气流的压力产生两相氮气流。相分离产生可回收的氮蒸汽流和液氮流作为产物。

2. 发明授权

US4662917A Process for the separation of air 失效
标题翻译：空气分离过程
公开(公告)号：US4662917A
公开(公告)日：1987-05-05
申请号：US869143
申请日：1986-05-30
申请人： Thomas E. Cormier, Sr. , Rakesh Agrawal
发明人： Thomas E. Cormier, Sr. , Rakesh Agrawal
IPC分类号： F25J3/04 , F25J5/00
CPC分类号： F25J3/042 , F25J3/04157 , F25J3/04193 , F25J3/04296 , F25J3/04351 , F25J3/044 , F25J3/04618 , F25J2200/50 , F25J2200/72 , F25J2200/76 , F25J2240/44
摘要： A process is set forth for the separation of air by cryogenic distillation in a single column to produce a nitrogen product and an oxygen-enriched product. In the process, at least a portion of the nitrogen product is compressed and recycled to provide reboil at the bottom of the distillation column and to provide some additional reflux to the upper portion of the column. In addition, part of the compressed air stream is expanded to provide work, which is used to drive an auxiliary compressor for recycle nitrogen stream compression.
摘要翻译：阐述了通过在单一柱中的低温蒸馏来分离空气以产生氮产物和富氧产物的方法。在此过程中，氮气产物的至少一部分被压缩并再循环，以在蒸馏塔的底部提供再沸腾，并向柱的上部提供一些额外的回流。另外，部分压缩空气流被膨胀以提供工作，其用于驱动用于再循环氮气流压缩的辅助压缩机。

3. 发明授权

US4662916A Process for the separation of air 失效
标题翻译：空气分离过程
公开(公告)号：US4662916A
公开(公告)日：1987-05-05
申请号：US869142
申请日：1986-05-30
申请人： Rakesh Agrawal , Thomas E. Cormier, Sr.
发明人： Rakesh Agrawal , Thomas E. Cormier, Sr.
IPC分类号： F25J3/04 , F25J5/00
CPC分类号： F25J3/042 , F25J3/04157 , F25J3/04169 , F25J3/04296 , F25J3/04351 , F25J3/044 , F25J3/04618 , F25J2200/50 , F25J2205/62 , F25J2245/40 , Y10S62/939
摘要： A process is set forth for the separation of air by cryogenic distillation in a single column to produce a nitrogen product and an oxygen-enriched product. In the process, at least a portion of the nitrogen product is compressed and recycled to provide reboil at the bottom of the distillation column and to provide some additional reflux to the upper portion of the column. In addition, part of the compressed feed air stream is expanded to provide work, which is used to drive an auxiliary compressor for feed air substream compression.
摘要翻译：阐述了通过在单一柱中的低温蒸馏来分离空气以产生氮产物和富氧产物的方法。在此过程中，氮气产物的至少一部分被压缩并再循环，以在蒸馏塔的底部提供再沸腾，并向柱的上部提供一些额外的回流。此外，部分压缩的进料空气流被膨胀以提供工作，其用于驱动用于进料空气分流压缩的辅助压缩机。

4. 发明授权

US5049173A Production of ultra-high purity oxygen from cryogenic air separation plants 失效
标题翻译：从低温空气分离设备生产超高纯度氧气
公开(公告)号：US5049173A
公开(公告)日：1991-09-17
申请号：US490017
申请日：1990-03-06
申请人： Thomas E. Cormier, Sr. , Rakesh Agrawal , Alan L. Prentice , Donald W. Woodward
发明人： Thomas E. Cormier, Sr. , Rakesh Agrawal , Alan L. Prentice , Donald W. Woodward
IPC分类号： F25J3/04
CPC分类号： F25J3/04709 , F25J3/04284 , F25J3/04303 , F25J3/04321 , F25J3/04412 , F25J3/0443 , F25J3/04454 , F25J3/04715 , F25J3/04872 , F25J3/04878 , F25J2200/06 , F25J2200/32 , F25J2200/34 , F25J2200/50 , F25J2200/90 , F25J2205/02 , F25J2215/50 , F25J2215/56 , F25J2245/02 , F25J2245/58 , F25J2250/20 , Y10S62/924 , Y10S62/939
摘要： The present invention relates to an improvement for the production of ultra-high purity oxygen from cryogenic air separation processes which produce nitrogen and/or commercial purity oxygen products. In particular, the improvement comprises removing or producing an oxygen-containing but heavy contaminant-lean (free, stream from one of the distillation columns of a single or multiple column cryogenic air separation facility and further stripping the removed or produced oxygen-containing stream in a fractionator to produce ultra-high purity oxygen (i.e., contaminant concentration

5. 发明授权

US4662918A Air separation process 失效
标题翻译：空气分离过程
公开(公告)号：US4662918A
公开(公告)日：1987-05-05
申请号：US869144
申请日：1986-05-30
申请人： Rakesh Agrawal , Thomas E. Cormier, Sr.
发明人： Rakesh Agrawal , Thomas E. Cormier, Sr.
IPC分类号： F25J3/04 , F25J5/00
CPC分类号： F25J3/042 , F25J3/04351 , F25J3/04357 , F25J3/044 , F25J2200/50 , F25J2200/72 , F25J2200/76
摘要： A process is set forth for the separation of air by cryogenic distillation in a single column to produce a nitrogen product and an oxygen-enriched product. In the process, at least a portion of the nitrogen product is compressed and recycled to provide reboil at the bottom of the distillation column and to provide some additional reflux to the upper portion of the column. In addition, part of the compressed nitrogen recycle stream is expanded to provide work.
摘要翻译：阐述了通过在单一柱中的低温蒸馏来分离空气以产生氮产物和富氧产物的方法。在此过程中，氮气产物的至少一部分被压缩并再循环，以在蒸馏塔的底部提供再沸腾，并向柱的上部提供一些额外的回流。另外，部分压缩的氮气循环流被扩大以提供工作。

6. 发明授权

US08612432B2 Determining query intent 有权
标题翻译：确定查询意图
公开(公告)号：US08612432B2
公开(公告)日：2013-12-17
申请号：US12816389
申请日：2010-06-16
申请人： Krishnaram N. G. Kenthapadi , Panayiotis Tsaparas , Sreenivas Gollapudi , Rakesh Agrawal
发明人： Krishnaram N. G. Kenthapadi , Panayiotis Tsaparas , Sreenivas Gollapudi , Rakesh Agrawal
IPC分类号： G06F7/00 , G06F17/30 , G06F15/18
CPC分类号： G06F17/30979
摘要： A tree structure has a node associated with each category of a hierarchy of item categories. Child nodes of the tree are associated with sub-categories of the categories associated with parent nodes. Training data including received queries and indicators of a selected item category for each received query is combined with the tree structure by associating each query with the node corresponding to the selected category of the query. When a query is received, a classifier is applied to the nodes to generate a probability that the query is intended to match an item of the category associated with the node. The classifier is applied until the probability is below a threshold. One or more categories associated with the nodes that are closest to the intent of the received query are selected and indicators of items of those categories that match the received query are output.
摘要翻译：树结构具有与项目类别的层次结构的每个类别相关联的节点。树的子节点与与父节点相关联的类别的子类别相关联。通过将每个查询与对应于所选择的查询类别的节点相关联，将包括接收到的查询和针对每个接收到的查询的所选项目类别的指示符的训练数据与树结构组合。当接收到查询时，分类器被应用于节点以产生查询旨在匹配与节点相关联的类别的项目的概率。应用分类器直到概率低于阈值。选择与接收到的查询的意图最接近的节点相关联的一个或多个类别，并输出与接收到的查询匹配的那些类别的项目的指示符。

7. 发明授权

US08413060B1 Methods and systems for visually distinguishing user attribute similarities and differences 有权
标题翻译：用于视觉区分用户属性相似性和差异的方法和系统
公开(公告)号：US08413060B1
公开(公告)日：2013-04-02
申请号：US12000846
申请日：2007-12-18
申请人： Rakesh Agrawal
发明人： Rakesh Agrawal
IPC分类号： G06F3/00 , G06F15/16
CPC分类号： H04L51/04
摘要： Methods, computer-readable storage media, and systems are provided to facilitate visually distinguishing common attributes of users an electronic communication network or messaging service. In particular, user profile attributes are compared between a first and second user, and similar attributes are visually highlighted by assigning, for example, a distinct font, font size, color, font effect, and/or other visual effect to the user's screen name to designate which attributes are similar. In addition, or alternatively, when the first user views a user profile of the second user, common user attributes are visually highlighted. In one embodiment, the font, font size, color, and/or font effect assigned to the highlighted attribute indicates a degree of similarity of the attribute. Such implementations may allow users to more easily recognize and interact with others that have similar interests and attributes.
摘要翻译：提供方法，计算机可读存储介质和系统以便于在电视通信网络或消息服务的视觉上区分用户的公共属性。特别地，在第一和第二用户之间比较用户简档属性，并且通过向用户的屏幕名称分配例如不同的字体，字体大小，颜色，字体效果和/或其他视觉效果来视觉突出类似的属性指定哪些属性相似。另外或替代地，当第一用户查看第二用户的用户简档时，公共用户属性被视觉上突出显示。在一个实施例中，分配给突出显示的属性的字体，字体大小，颜色和/或字体效果指示属性的相似程度。这样的实现可以允许用户更容易地识别和与具有相似兴趣和属性的其他人交互。

8. 发明授权

US08244747B2 Middleware for query processing across a network of RFID databases 失效
标题翻译：用于RFID数据库网络查询处理的中间件
公开(公告)号：US08244747B2
公开(公告)日：2012-08-14
申请号：US11566931
申请日：2006-12-05
申请人： Rakesh Agrawal , Alvin K. Cheung , Karin Kailing , Stefan Schoenauer
发明人： Rakesh Agrawal , Alvin K. Cheung , Karin Kailing , Stefan Schoenauer
IPC分类号： G06F17/30
CPC分类号： G06F17/30448 , G06F17/30557
摘要： An implementation wherein RFID data is shared across independent organizations has been addressed. RFID data is usually spread across different parties, e.g. enterprises in a supply chain and thus, efficient query processing across all parties is required. Traceability is emerging as one of the key applications of RFID technology. A generic data model is introduced for querying RFID data across a network of independently operated data sources. The model can be used to facilitate traceability query processing and give a set of representative traceability queries. A newly designed process-and-forward approach is implemented for executing traceability queries.
摘要翻译：解决了RFID数据在独立组织之间共享的实现。 RFID数据通常分布在不同方面，例如供应链中的企业，因此需要各方有效的查询处理。可追溯性正在成为RFID技术的关键应用之一。引入了通用数据模型，用于通过独立运行的数据源网络查询RFID数据。该模型可用于促进可追溯性查询处理，并提供一组具有代表性的可追溯性查询。实施新设计的进程和转发方法来执行可追溯性查询。

9. 发明申请

US20100185577A1 OBJECT CLASSIFICATION USING TAXONOMIES 有权
标题翻译：使用TAXONOMIES的对象分类
公开(公告)号：US20100185577A1
公开(公告)日：2010-07-22
申请号：US12414065
申请日：2009-03-30
申请人： Panayiotis Tsaparas , Panagiotis Papadimitriou , Ariel D. Fuxman , Lise C. Getoor , Rakesh Agrawal
发明人： Panayiotis Tsaparas , Panagiotis Papadimitriou , Ariel D. Fuxman , Lise C. Getoor , Rakesh Agrawal
IPC分类号： G06N5/02
CPC分类号： G06N99/005
摘要： As provided herein objects from a source catalog, such as a provider's catalog, can be added to a target catalog, such as an enterprise master catalog, in a scalable manner utilizing catalog taxonomies. A baseline classifier determines probabilities for source objects to target catalog classes. Source objects can be assigned to those classes with probabilities that meet a desired threshold and meet a desired rate. A classification cost for target classes can be determined for respective unassigned source objects, which can comprise determining an assignment cost and separation cost for the source objects for respective desired target classes. The separation and assignment costs can be combined to determine the classification cost, and the unassigned source objects can be assigned to those classes having a desired classification cost.
摘要翻译：如本文所提供的，可以使用目录分类法将来自源目录的诸如提供者目录的对象以可扩展的方式添加到目标目录，例如企业主目录。基准分类器确定源对象到目标目录类的概率。可以将源对象分配给具有满足期望阈值且满足期望速率的概率的那些类。可以针对相应的未分配的源对象来确定目标类别的分类成本，其可以包括确定用于各个期望目标类别的源对象的分配成本和分离成本。分离和分配成本可以组合以确定分类成本，并且未分配的源对象可以被分配给具有期望的分类成本的那些类。

10. 发明申请

US20100114925A1 CUSTOMIZED SEARCH 有权
标题翻译：自定义搜索
公开(公告)号：US20100114925A1
公开(公告)日：2010-05-06
申请号：US12253658
申请日：2008-10-17
申请人： John C. Shafer , Rakesh Agrawal
发明人： John C. Shafer , Rakesh Agrawal
IPC分类号： G06F17/30
CPC分类号： G06F17/30864 , G06F17/30477
摘要： Techniques are disclosed herein for providing a custom search engine. In one aspect, a first search query is received from a requestor. First search results contain search result items that match the first search query are obtained. A least one sub-query is generated from the first search results. The generating is based on rules for a particular custom search engine. Second search results that match the sub-query are then obtained. A search result set is formed from a corpus that includes the first search results and the second search results. The generating of the search result set is based on the rules for the particular custom search engine. The search result set is provided to the requester. In one aspect an interface for designing a custom search engine is provided. The interface allows the designer to specify the layout of a search results page.
摘要翻译：本文公开了用于提供定制搜索引擎的技术。在一个方面，从请求者接收第一搜索查询。首先搜索结果包含与第一个搜索查询匹配的搜索结果项。从第一搜索结果生成至少一个子查询。生成基于特定自定义搜索引擎的规则。然后获得与子查询匹配的第二搜索结果。搜索结果集由包含第一搜索结果和第二搜索结果的语料库形成。搜索结果集的生成基于特定自定义搜索引擎的规则。搜索结果集提供给请求者。在一个方面，提供了一种用于设计定制搜索引擎的界面。该界面允许设计者指定搜索结果页面的布局。

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