公开(公告)号：US20080302539A1

公开(公告)日：2008-12-11

申请号：US11761185

申请日：2007-06-11

Applicant: Pradeep Kumar Mallenahalli ,  Brennan Scott Domec ,  Charles Michael Webre ,  Mark Alan Veverica ,  John Fletcher Wheeler

Inventor： Pradeep Kumar Mallenahalli ,  Brennan Scott Domec ,  Charles Michael Webre ,  Mark Alan Veverica ,  John Fletcher Wheeler

IPC: E21B19/16

CPC classification number: E21B19/16 ,  B23K20/1225 ,  B23K20/14 ,  B23K2101/06 ,  B23K2103/04 ,  E21B43/10 ,  E21B43/103

Abstract: The present invention generally relates to a method and an apparatus for connecting an add-on pipe segment to a pipe string to lengthen the pipe string using friction stir welding. The pipe string is suspended in a borehole using a spider or some other pipe suspending device, and the lower end of the pipe segment is brought into an abutting or nearly abutting relationship with the proximal end of the pipe string positioned above the pipe suspending device and above the rig floor. The friction stir welding machine is brought to well center to weld the abutment or gap between the pipe segment and the pipe string and join the pipe segment to the pipe string to lengthen the pipe string. In one aspect, the method includes friction stir welding an expandable pipe segment to an expandable pipe string to form a lengthened expandable pipe string. The pipe segment may be comprised of two or more pipe segments that have been friction stir welded or conventionally welded to form a pipe stand. After friction stir welding to lengthen the pipe string, the lengthened pipe string is lowered into the borehole and the proximal end of the lengthened pipe string is favorably positioned to abut or nearly abut a new add-on pipe segment for friction stir welding at the resulting abutment or gap. The friction stir welding process provides a highly reliable pipe joint for expansion.

Abstract translation: 本发明一般涉及一种用于使用摩擦搅拌焊接将附加管段连接到管柱以延长管柱的方法和装置。 管柱使用蜘蛛或其他管状悬挂装置悬挂在钻孔中，并且管段的下端与位于管悬挂装置上方的管柱的近端形成邻接或几乎邻接的关系， 在钻台上方。 将摩擦搅拌焊接机置于中心，焊接管段和管柱之间的邻接或间隙，并将管段连接到管柱上以延长管柱。 在一个方面，该方法包括将可膨胀管段摩擦搅拌焊接到可膨胀管柱以形成延长的可膨胀管柱。 管段可以由已经摩擦搅拌焊接或常规焊接以形成管架的两个或更多个管段组成。 在摩擦搅拌焊接以延长管柱之后，延长的管柱下降到钻孔中，并且加长管柱的近端被有利地定位成邻接或几乎邻接用于摩擦搅拌焊接的新的附加管段，由此产生 基台或间隙。 摩擦搅拌焊接工艺为膨胀提供了高可靠性的管接头。

公开(公告)号：US20080146462A1

公开(公告)日：2008-06-19

申请号：US11645112

申请日：2006-12-26

Applicant: Kailash Chand Gupta ,  Pradeep Kumar ,  Shweta Mahajan

Inventor： Kailash Chand Gupta ,  Pradeep Kumar ,  Shweta Mahajan

IPC: C40B50/18 ,  C40B50/14

CPC classification number: B01J19/0046 ,  B01J2219/00605 ,  B01J2219/00608 ,  B01J2219/0061 ,  B01J2219/00612 ,  B01J2219/00626 ,  B01J2219/00637

Abstract: The present invention lies in developing a novel method for the preparation of oligonucleotide microarrays obviating the drawbacks to an extent, such as time consuming complex chemical reactions, preparation of modified supports/oligomer modifying reagents, use of activating/condensing reagent, low signal to noise ratio, poor immobilization and hybridization efficiencies, etc. Further, the prepared arrays can be used to detect single or multiple nucleotide mismatches using hybridization assay.

Abstract translation: 本发明在于开发一种制备寡核苷酸微阵列的新方法，其消除了复杂化学反应耗时的缺点，修饰的载体/寡聚体修饰试剂的制备，活化/冷凝试剂的使用，低信噪比 比例，固定化和杂交效率差等。此外，制备的阵列可用于使用杂交测定法检测单核苷酸或多核苷酸错配。

公开(公告)号：US07365204B2

公开(公告)日：2008-04-29

申请号：US10806061

申请日：2004-03-22

Applicant: Rajiv Kumar ,  Praphulla Narahar Joshi ,  Gopal Moreshwar Chaphekar ,  Prashant Suresh Niphadkar ,  Ashutosh Agarwal ,  Pradeep Kumar Verma ,  Kumar Samir Singh

Inventor： Rajiv Kumar ,  Praphulla Narahar Joshi ,  Gopal Moreshwar Chaphekar ,  Prashant Suresh Niphadkar ,  Ashutosh Agarwal ,  Pradeep Kumar Verma ,  Kumar Samir Singh

IPC: C07D213/08 ,  C07D213/12

CPC classification number: C07D213/08 ,  B01J29/89 ,  B01J2229/12 ,  B01J2229/32 ,  C07D213/10

Abstract: An process for the preparation of pyridine and/or picolines is disclosed. The process comprises contacting a mixture of carbonyl compound with ammonia in the presence of surface-passivated titanium-silicate catalyst in gas phase at a temperature ranging between 300-500° C., at gas space velocity in the range of 300 to 3000 h−1 and at a pressure ranging between 1 to 10 atmosphere, condensing and separating the products by conventional methods and if desired, further purifying the product using well known conventional methods.

Abstract translation: 公开了制备吡啶和/或吡啶甲酸的方法。 该方法包括在表面钝化的钛硅酸盐催化剂存在下，在300-300℃的温度范围内，在300-500℃的温度范围内，使羰基化合物与氨的混合物在气相中接触， SUP> -1，并且在1至10个大气压的范围内，通过常规方法冷凝和分离产物，如果需要，使用公知的常规方法进一步纯化产物。

公开(公告)号：US20080056241A1

公开(公告)日：2008-03-06

申请号：US11890016

申请日：2007-08-03

Applicant: Justin Haddad ,  Pradeep Kumar ,  Richard Schmidt

Inventor： Justin Haddad ,  Pradeep Kumar ,  Richard Schmidt

IPC: H04L12/66

CPC classification number: H04L29/06027 ,  H04L12/14 ,  H04L12/1403 ,  H04L65/1006 ,  H04L65/1069 ,  H04M3/2218

Abstract: A unified session detail records of a multi-hop session is provided. The multi-hop session may be established through multiple nodes in a VoIP network. Each node may generate session detail records for the legs of the multi-hop session that are connected to the node. The nodes on the path of the multi-hop call may send the record to a single node to consolidate the session detail records of the legs of the multi-hop call in the single node so that the single node can provide unified session detail records of the multi-hop session. By providing unified session detail records, the user does not need to track down the nodes that are on the path of the multi-hop call to obtain the session detail records of the multi-hop session.

Abstract translation: 提供了多跳会话的统一会话详细记录。 可以通过VoIP网络中的多个节点来建立多跳会话。 每个节点可以生成连接到节点的多跳会话的分支的会话细节记录。 多跳呼叫路径上的节点可以将记录发送到单个节点，以在单个节点中合并多跳呼叫的分支的会话详细记录，使得单个节点可以提供统一的会话详细记录 多跳会话。 通过提供统一的会话详细记录，用户不需要跟踪多跳呼叫路径上的节点，以获取多跳会话的会话详细记录。

公开(公告)号：US20060135759A1

公开(公告)日：2006-06-22

申请号：US11014411

申请日：2004-12-16

Applicant: Pradeep Kumar ,  Kailash Gupta

Inventor： Pradeep Kumar ,  Kailash Gupta

IPC: C07H21/00 ,  C08G63/91

CPC classification number: C07H21/00 ,  Y02P20/582

Abstract: Present invention provides a reusable universal polymer support for repetitive Oligonucleotide synthesis and a method of synthesis thereof.

Abstract translation: 本发明为重复的寡核苷酸合成提供了可重复使用的通用聚合物载体及其合成方法。

公开(公告)号：US07022853B2

公开(公告)日：2006-04-04

申请号：US10282210

申请日：2002-10-29

Applicant: Nikhilesh Chandra Bhardwaj ,  Pradeep Kumar Verma ,  Agarwal Ashutosh

Inventor： Nikhilesh Chandra Bhardwaj ,  Pradeep Kumar Verma ,  Agarwal Ashutosh

IPC: C07F3/06 ,  C07F11/00

CPC classification number: C07D213/803 ,  C07D213/80

Abstract: The present invention relates to a single-pot process for the preparation of metal nicotinates, useful as a dietary supplement, from beta picoline as a source of the starting material, said process comprising the steps hydrosulfonation of beta picoline with sulfuric acid, heating the reaction mixture thus obtained to a temperature of about 150°-210° C. followed by oxidation with a suitable oxidizing agent to obtain nicotinic acid sulfate, reacting the nicotinic acid sulfate with a water soluble zinc and/or chromium salt to produce a solid metal nicotinate and separating it to thereby recover the corresponding metal nicotinates of high purity.

公开(公告)号：US06625330B1

公开(公告)日：2003-09-23

申请号：US09516142

申请日：2000-03-01

Applicant: Pradeep Kumar Dubey ,  Sugata Ghosal ,  Ashutosh Kulshreshtha ,  Abhinanda Sarkar

Inventor： Pradeep Kumar Dubey ,  Sugata Ghosal ,  Ashutosh Kulshreshtha ,  Abhinanda Sarkar

IPC: G06K932

CPC classification number: G06K9/6204

Abstract: A method of doing meaningful modifications on an image is presented. These modifications can then be used in variety of applications related to image shape manipulation and similar shape retrieval. The method extracts macrofeatures and microfeature from a given shape. Deformations are done on the macrofeatures only. These deformations are either predefined, or are taken from a deformation library, or are calculated from the shape itself, The microfeatures are then added to the deformed macrofeatures to get a deformed shape. The shape deformations then allow user's perception of shape similarity to be learned, which is reflected in the values of parameters in a parameterized shape similarity metric. The user can use one of the deformed shapes as the initial query point, instead of the shape he or she started with. The shape database compression is achieved by storing only the identification of a similar shape and value of global deformations which will generate this shape approximately, instead of storing every shape feature individually.

Abstract translation: 提出了对图像进行有意义的修改的方法。 然后，这些修改可用于与图像形状操纵和类似形状检索有关的各种应用。 该方法从给定的形状提取宏特征和微特征。 变形仅在宏观特征上进行。 这些变形是预定义的，或者是从变形库中获取的，或者是根据形状本身计算的。然后将微特征加到变形的宏观特征中以得到变形的形状。 形状变形然后允许用户对形状相似度的感知被学习，这反映在参数化形状相似性度量中的参数值中。 用户可以使用其中一个变形的形状作为初始查询点，而不是他或她开始的形状。 形状数据库压缩是通过仅存储将产生该形状的全局变形的类似形状和值的识别来实现的，而不是分别存储每个形状特征。

公开(公告)号：US06376683B1

公开(公告)日：2002-04-23

申请号：US09872849

申请日：2001-06-01

Applicant: Pradeep Kumar ,  Rodney Agustinho Fernandes

Inventor： Pradeep Kumar ,  Rodney Agustinho Fernandes

IPC: C07D30930

CPC classification number: C07D309/30 ,  Y02P20/582

Abstract: The present invention relates to an improved, efficient and enantio-selective process for the synthesis of (4R, 6S)-4-hydroxy-6-hydroxymethyl tetrahydropyran-2-one, employing the Sharpless asymmetric dihydroxylation and regiospecific nucleophilic hydride opening of the cyclic sulfite/sulfate as the key steps. The invention also resides in the intermediates used in the process.

Abstract translation: 本发明涉及一种用于合成（4R，6S）-4-羟基-6-羟甲基四氢吡喃-2-酮的改进的，有效的和对映体选择性方法，采用Sharpless不对称二羟基化和区域特异性亲核氢化物开环的环状 亚硫酸盐/硫酸盐为关键步骤。 本发明也在于该方法中使用的中间体。

公开(公告)号：US06223320B1

公开(公告)日：2001-04-24

申请号：US09021516

申请日：1998-02-10

Applicant: Pradeep Kumar Dubey ,  Marc Adam Kaplan ,  Sanjay Mukund Joshi

Inventor： Pradeep Kumar Dubey ,  Marc Adam Kaplan ,  Sanjay Mukund Joshi

IPC: H03M1300

CPC classification number: G06F9/30018 ,  G06F9/30032 ,  G06F9/30036 ,  G06F9/3004 ,  G06F9/345 ,  H03M13/091

Abstract: An improved CRC generation mechanism for generating a CRC value of relevant data in a digital data stream is disclosed wherein relevant data in the data stream is identified and partitioned into a plurality of intervals. A CRC value is determined for each interval by partitioning the interval into a plurality of chunks, loading from persistent storage a table of CRC values for a range of chunks, determining a CRC value for each of the chunks with parallel table lookup operations on the table, and combining the CRC values for the chunks. The CRC values for each of the intervals is combined to generate the CRC for the relevant data. The parallel table look operation is preferably a vector permute instruction that is executed by a SIMD-style vector unit.

Abstract translation: 公开了一种用于在数字数据流中生成相关数据的CRC值的改进的CRC生成机制，其中识别数据流中的相关数据并将其划分为多个间隔。 通过将间隔划分成多个块来确定每个间隔的CRC值，从持久存储器加载块范围的CRC值表，使用表上的并行表查找操作确定每个块的CRC值 ，并组合块的CRC值。 每个间隔的CRC值被组合以产生相关数据的CRC。 平行表看法操作优选地是由SIMD式向量单元执行的向量置换指令。

公开(公告)号：US06183877B2

公开(公告)日：2001-02-06

申请号：US08915097

申请日：1997-08-20

Applicant: James Alexander Evert Bell ,  Pradeep Kumar Rohatgi ,  Thomas Francis Stephenson ,  Anthony Edward Moline Warner

Inventor： James Alexander Evert Bell ,  Pradeep Kumar Rohatgi ,  Thomas Francis Stephenson ,  Anthony Edward Moline Warner

IPC: C22C2102

CPC classification number: C22C32/0084 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2001/1052 ,  Y10T428/12007 ,  Y10T428/249927 ,  C22C47/08 ,  C22C49/14

Abstract: This composite consists of an aluminum-alloy matrix containing by volume percent, 0.4 to 8.8 alumina, 1 to 4.4 carbon or graphite and 0.5 to 20 nickel-bearing aluminide. The alumina particles have an average size between 3 and 250 &mgr;m and the carbon and graphite particles have an average size between 10 and 250 &mgr;m. The composite is cast by stirring alumina and carbon or graphite contained in a molten aluminum or aluminum-base alloy to form a molten mixture. The molten mixture is cast directly from a temperature above the liquidus of the matrix alloy. While solidifying, carbon or graphite particles delay or hinder the settling of alumina to create a more uniform composite structure. The resulting composite structure contains an aluminum-base alloy, alumina, carbon or graphite and nickel-bearing aluminide dispersoids.

Abstract translation: 该复合材料由体积百分数为0.4至8.8的氧化铝，1至4.4碳或石墨和0.5至20含镍铝化物的铝合金基体组成。 氧化铝颗粒的平均尺寸为3至250μm，碳和石墨颗粒的平均尺寸为10至250μm。 通过搅拌包含在熔融铝或铝基合金中的氧化铝和碳或石墨来铸造复合材料以形成熔融混合物。 熔融混合物直接从基质合金液相线以上的温度浇铸。 在固化时，碳或石墨颗粒延迟或阻碍氧化铝的沉降以产生更均匀的复合结构。 所得的复合结构包含铝基合金，氧化铝，碳或石墨以及含镍的铝化物分散体。