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    • 72. 发明授权
    • Staged upflow hydroprocessing with noncatalytic impurity removal from
the first stage vapor effluent
    • 从第一级蒸汽流出物中分离出非催化杂质,分阶段上流加氢处理
    • US5989411A
    • 1999-11-23
    • US177735
    • 1998-10-23
    • Ramesh Gupta
    • Ramesh Gupta
    • C10G65/02C10G25/00C10G45/00C10G45/02C10G45/32C10G45/44C10G45/58C10G47/00C10G49/00C10G65/04C10G67/02C10G67/04C10G73/02C10G17/00
    • C10G49/002C10G67/04Y10S203/06
    • A hydroprocessing process for removing impurities from a feed comprising a hydrocarbonaceous liquid comprises at least two cocurrent, upflow hydroprocessing reaction stages and a non-catalytic, vapor-liquid contacting stage. The reaction and contacting stages may all be in the same reactor vessel. The feed and a hydrogen treat gas are passed up into a catalyst bed which comprises the first reaction stage, which produces a partially hydroprocessed liquid and vapor effluent. This first stage vapor is passed up into the contacting stage in which it contacts a hydrocarbonaceous liquid which reduces the vapor impurity content. The impurity-enriched contacting liquid passes down and mixes with the first stage liquid effluent. The combined effluents and hydrogen are passed up into the second reaction stage to form a processed product liquid and hydrogen-containing vapor effluent. This second reaction stage vapor effluent is passed up into the first stage to provide at least a portion of the hydrogen for the first stage reaction. Additional product liquid may be recovered by cooling the contacting and condensing the purified contacting stage vapor effluent.
    • 用于从包含烃液体的进料中除去杂质的加氢处理方法包括至少两个并流,向上加氢处理反应阶段和非催化气液接触阶段。 反应和接触阶段都可以在同一反应容器中。 进料和氢气处理气体被送入催化剂床,催化剂床包括第一反应段,其产生部分加氢处理的液体和蒸气流出物。 该第一级蒸气通入其接触阶段,在该阶段中,其接触含烃液体,这降低了蒸气杂质含量。 杂质富集的接触液体向下流动并与第一级液体流出物混合。 将合并的废水和氢气输送到第二反应阶段以形成加工产物液体和含氢蒸汽流出物。 将该第二反应段蒸气流出物向上流入第一阶段以提供用于第一阶段反应的氢的至少一部分。 可以通过冷却接触并冷凝纯化的接触级蒸气流出物来回收附加的产物液体。
    • 75. 发明授权
    • Pulsed flow vapor-liquid reactor
    • 脉冲流气液反应器
    • US4526757A
    • 1985-07-02
    • US437905
    • 1982-11-01
    • Ramesh Gupta
    • Ramesh Gupta
    • B01J8/04G05D9/00B01J8/02
    • B01J8/0492Y10S423/09Y10T137/2774Y10T137/2802
    • A process for automatically providing for periodic surge flow or liquid slugs in the catalyst bed to insure that the catalyst is periodically fully wetted. Therefore, before dry spots develop in the bed and some catalyst particles are deprived of the liquid reactants, the aforesaid liquid pulse or slug will rewet the catalyst. This desired periodic introduction of a liquid slug through a catalyst bed is accomplished by the provision of a plurality of automatically actuating and operating siphon means disposed and distributed across the area of the distributor tray means within the reactor.
    • 一种用于在催化剂床中自动提供周期性浪涌流动或液体段的过程,以确保催化剂周期性地完全润湿。 因此,在床上发生干斑之前,一些催化剂颗粒被剥夺了液体反应物,所以前述的液体脉冲或细粒将再润湿催化剂。 通过设置多个自动致动和操作的虹吸装置来实现液体塞通过催化剂床的周期性引入,该多个自动启动和操作的虹吸装置设置并分布在反应器内的分配器托盘装置的区域上。
    • 76. 发明授权
    • Reactor for fouling prone feeds
    • 反应堆污染倾向饲料
    • US4385033A
    • 1983-05-24
    • US336420
    • 1981-12-31
    • Ramesh Gupta
    • Ramesh Gupta
    • B01J8/02B01J8/04C10G49/00
    • B01J8/0492B01J8/0278B01J8/0453C10G49/002
    • The invention is for a fixed bed reactor with two phase gas and liquid flow. The reactor has at least one auxiliary bed of solid particles disposed above the main bed of solid particles. The auxiliary bed has a liquid bypass comprised of hollow tubing extending through the auxiliary bed. Liquid receptacles provide a liquid seal above the liquid bypasses, thereby preventing gas from bypassing along with the liquid. The liquid spilled from the flow receptacles seeks its lowest level and flows through the auxiliary bed. The tubing provides a bypass first for the liquid and later for both the liquid and gas when the auxiliary bed becomes fouled and the liquid seal is thereby broken. This feed arrangement allows for a low pressure drop bypassing of the auxiliary bed, when the auxiliary bed becomes fouled and clogged. The invention is also applicable to other apparatuses which use a flow arrangement similar to fixed bed reactors, but which do not necessarily utilize a chemical reaction. One example of such apparatus is a packed absorption tower having co-current downflow of gas and liquid.
    • 本发明是用于具有两相气体和液体流的固定床反应器。 反应器具有至少一个固体颗粒辅助床,其设置在固体颗粒主床上方。 辅助床具有包括延伸​​穿过辅助床的中空管的液体旁路。 液体容器在液体旁路之上提供液体密封,从而防止气体与液体一起旁路。 从流动容器溢出的液体寻求其最低水平并流过辅助床。 当辅助床被污染并且液体密封件被破坏时,管道首先为液体提供旁路并且随后用于液体和气体。 当辅助床被弄脏并堵塞时,该馈送装置允许辅助床的低压降旁路。 本发明也适用于使用类似于固定床反应器但不一定利用化学反应的流动布置的其它装置。 这种装置的一个实例是具有气流和液体的并流下流的填充吸收塔。
    • 77. 发明授权
    • Hydroprocessing reactor with extended operating life
    • 加氢处理反应器具有延长的使用寿命
    • US4380529A
    • 1983-04-19
    • US261985
    • 1981-05-08
    • Ramesh Gupta
    • Ramesh Gupta
    • B01J8/02B01J8/04C10G49/00C10G23/02
    • C10G49/002B01J8/0278B01J8/0453B01J8/0492
    • The invention is for a fixed bed reactor with two phase gas and liquid flow. The reactor has at least one auxiliary bed of solid particles disposed above the main bed of solid particles. The auxiliary bed has separate liquid and gas bypasses comprised of hollow tubing extending through the auxiliary bed to a distributor tray. A liquid layer on the tray provides a liquid seal above the liquid bypasses, thereby preventing gas from bypassing along with the liquid. This feed arrangement allows for a low pressure drop bypassing of the auxiliary bed, when the auxiliary bed becomes fouled and clogged. The invention is also applicable to other apparatuses which use a flow arrangement similar to fixed bed reactors, but which do not necessarily utilize a chemical reaction. One example of such apparatus is a packed absorption tower having co-current downflow of gas and liquid.
    • 本发明是用于具有两相气体和液体流的固定床反应器。 反应器具有至少一个固体颗粒辅助床,其设置在固体颗粒主床上方。 辅助床具有分离的液体和气体旁路,其包括通过辅助床延伸到分配器托盘的中空管。 托盘上的液体层在液体旁路上提供液体密封,从而防止气体与液体一起旁路。 当辅助床被弄脏并堵塞时,该馈送装置允许辅助床的低压降旁路。 本发明也适用于使用类似于固定床反应器但不一定利用化学反应的流动布置的其它装置。 这种装置的一个实例是具有气流和液体的并流下流的填充吸收塔。
    • 78. 发明授权
    • Autonomous role-based security for database management systems
    • 数据库管理系统的基于角色的自主安全
    • US09298933B2
    • 2016-03-29
    • US13945148
    • 2013-07-18
    • Anil GoelAsif Iqbal DesaiRamesh GuptaSomnath GhoshHarin Vadodaria
    • Anil GoelAsif Iqbal DesaiRamesh GuptaSomnath GhoshHarin Vadodaria
    • G06F17/30G06F21/60G06F21/62
    • G06F21/604G06F21/6218
    • Embodiments described herein generally relate to creating an autonomous role-based security system for a database management system, wherein a super user may not always be required. A computer-implemented method is described. The method includes establishing one or more privileges in a database system, each privilege controlling access to an administrative function for the database system. Each privilege is assigned to one or more roles. Each role may always have a minimum set of users with only administrative rights over the role. A request is received from a first user to grant a role to a second user. A database management system determines whether the first user has administrative privileges over the role. If the first user has administrative privileges over the role, the role is granted to the second user. The database system may satisfy the principles of least privilege and separation of duties.
    • 本文描述的实施例通常涉及为数据库管理系统创建自主的基于角色的安全系统,其中可能不总是需要超级用户。 描述了计算机实现的方法。 该方法包括在数据库系统中建立一个或多个特权,每个权限控制对数据库系统的管理功能的访问。 每个权限都分配给一个或多个角色。 每个角色可能总是拥有一个最小的用户组,只对该角色具有管理权限。 从第一用户接收到向第二用户授予角色的请求。 数据库管理系统确定第一个用户是否具有该角色的管理权限。 如果第一个用户对该角色具有管理权限,该角色将被授予第二个用户。 数据库系统可以满足最低权限和职责分离的原则。
    • 79. 发明申请
    • Multi-Control Password Changing
    • 多控制密码更改
    • US20140109206A1
    • 2014-04-17
    • US13728803
    • 2012-12-27
    • Anil GoelRamesh GuptaAsif Iqbal DesaiVivek KandiyanallurSomnath Ghosh
    • Anil GoelRamesh GuptaAsif Iqbal DesaiVivek KandiyanallurSomnath Ghosh
    • H04L29/06
    • H04L63/083G06F21/45H04L63/20
    • Multi-control password changing includes initiating a password change cycle to change a target user's password, selecting a plurality of administrators to provide password part inputs, receiving password part inputs separately and confidentially from the plurality of administrators, generating a multi-control password comprised of multiple password part inputs, changing the target user's password to the multi-control password, and transmitting either the single multi-control password or multiple password parts each separately to target user. In an exemplary embodiment, a system for multi-control password changing includes a multi-control password changing module configured to change a target user's password, a recruitment module configured to select a plurality of administrators to provide password part inputs, a regulation module configured to receive and process password part inputs from the plurality of administrators, and a change value module configured to generate a multi-control password comprised of multiple password part inputs.
    • 多控制密码改变包括启动密码更改周期以改变目标用户的密码,选择多个管理员以提供密码部分输入,从多个管理员分别和保密地接收密码部分输入,生成由多个管理员组成的多控制密码 多个密码部分输入,将目标用户的密码更改为多重密码,并将单个多重密码或多个密码分别单独发送给目标用户。 在示例性实施例中,用于多控制密码改变的系统包括被配置为改变目标用户密码的多控制密码改变模块,被配置为选择多个管理员以提供密码部分输入的招聘模块,配置为 接收和处理来自多个管理员的密码部分输入;以及变更值模块,被配置为生成由多个密码部分输入组成的多重控制密码。