Patents by Inventor Hongfei Guo
Hongfei Guo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11952355Abstract: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound, and a dehydrant to a dehydration reaction in the present of a second solvent to obtain the malononitrile oxime ether compound. Furthermore, the malononitrile oxime ether compound is obtained through one-step dehydration reaction. using the preparation method, is advantageous for improving the yield of malononitrile oxime ethers and reducing the cost.Type: GrantFiled: June 17, 2019Date of Patent: April 9, 2024Assignee: Shenyang Sinochem Agrochemicals R&D Co., Ltd.Inventors: Hongfei Wu, Xueming Cheng, Libao Xu, Chunxiao Guo, Jingbo Xu, Ningning Sun, Haibo Yu
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Patent number: 11926787Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.Type: GrantFiled: April 21, 2020Date of Patent: March 12, 2024Assignees: PetroChina Company Limited, CNPC Engineering Technology R&D Company LimitedInventors: Shuoqiong Liu, Hua Zhang, Jianzhou Jin, Ming Xu, Yongjin Yu, Fengzhong Qi, Congfeng Qu, Hong Yue, Youcheng Zheng, Wei Li, Yong Ma, Youzhi Zheng, Zhao Huang, Jinping Yuan, Zhiwei Ding, Chongfeng Zhou, Chi Zhang, Zishuai Liu, Hongfei Ji, Yuchao Guo, Xiujian Xia, Yong Li, Jiyun Shen, Huiting Liu, Yusi Feng, Bin Lyu
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Publication number: 20170325634Abstract: Embodiments of the present disclosure are directed towards vacuum vessels, more specifically, embodiments are directed towards insulating devices and high insulating systems including vacuum vessels. As an example, a vacuum vessel can include a shell including a continuous surface layer with a shell locking portion, a liner including a continuous surface layer with a liner locking portion, where the liner locking portion and the shell locking portion interlock the shell and the liner and include a first sealant layer and a second sealant layer disposed along an interface between the continuous surface layer of the shell and the continuous surface layer of the liner.Type: ApplicationFiled: December 19, 2014Publication date: November 16, 2017Applicant: Dow Global Technologies LLCInventors: Jie Cai, Yongjin Guo, Jeffery D. Zawisza, Cheng Chen, Dachao Li, Wei Liu, Jing Chen, David Hongfei Guo
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Publication number: 20140228490Abstract: Halogen-free, thermoplastic polyurethane-based compositions having good mechanical and flame-retardant properties are provided. The compositions include flame-retardant aromatic organic phosphate compounds that do not exhibit migration in molded products, such as cable and wire jacketing and insulation.Type: ApplicationFiled: August 31, 2011Publication date: August 14, 2014Inventors: Journey Lu Zhu, Bin Li, Lu Lan, Given Jing Chen, Qin Deng, David Hongfei Guo
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Patent number: 7970746Abstract: User productivity can be facilitated by providing an interface between a high-level intent and low-level settings that should be configured to achieve the intent. The intent can be expressed in declarative language. The intent can be verified to determine if it conforms to a target, a policy, or both. Policy binding can provide a relationship between the target and the policy. An application view can be provided that allows the user to view a server having one or more databases.Type: GrantFiled: September 26, 2006Date of Patent: June 28, 2011Assignee: Microsoft CorporationInventors: Praveen Seshadri, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, James A. Holt, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
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Patent number: 7739262Abstract: Currency and consistency requirements are specified as part of a query against a database that may contain replicated data that is updated asynchronously and therefore may not be completely up to date. The database system constructs query execution plans that include an input selection operator that verifies the currency of a replica and selects a subplan using the replica for execution only when the replica meets the query's currency constraints. It checks possible query execution plans at construction time against the query's consistency constraints and any plans that may produce a result not meeting the consistency constraints are rejected. In this way, the query result is guaranteed to satisfy the query's currency and consistency requirements.Type: GrantFiled: March 19, 2004Date of Patent: June 15, 2010Assignee: Microsoft CorporationInventors: Per-Åke Larson, Jonathan David Goldstein, Raghu Ramakrishnan, Hongfei Guo
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Patent number: 7730068Abstract: Automated sampling and aggregation of performance or other dynamically varying data facilitates user productivity by making data available for a wide range of uses. An automated sampling and aggregration system includes one or more types of data collectors, including a dedicated data collector per machine, multiple data collectors per machine, or an instance-less data collector.Type: GrantFiled: September 26, 2006Date of Patent: June 1, 2010Assignee: Microsoft CorporationInventors: Maciek Sarnowicz, Praveen Seshadri, Vipul M. Shah, James A. Holt, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, Oscar G. Naim, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
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Publication number: 20070294312Abstract: User productivity can be facilitated by providing an interface between a high-level intent and low-level settings that should be configured to achieve the intent. The intent can be expressed in declarative language. The intent can be verified to determine if it conforms to a target, a policy, or both. Policy binding can provide a relationship between the target and the policy. An application view can be provided that allows the user to view a server having one or more databases.Type: ApplicationFiled: September 26, 2006Publication date: December 20, 2007Applicant: MICROSOFT CORPORATIONInventors: Praveen Seshadri, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, James A. Holt, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
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Publication number: 20070288500Abstract: User productivity can be facilitated through automated sampling and aggregation of performance or other dynamically varying data to make such data available for a wide range of uses. A data collector is provided and can be a dedicated data collector per machine, there can be multiple data collectors per machine, or there can be an instance-less data collector.Type: ApplicationFiled: September 26, 2006Publication date: December 13, 2007Applicant: MICROSOFT CORPORATIONInventors: Maciek Sarnowicz, Praveen Seshadri, Vipul M. Shah, James A. Holt, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, Oscar G. Naim, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
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Publication number: 20050210010Abstract: Currency and consistency requirements are specified as part of a query against a database that may contain replicated data that is updated asynchronously and therefore may not be completely up to date. The database system constructs query execution plans that include an input selection operator that verifies the currency of a replica and selects a subplan using the replica for execution only when the replica meets the query's currency constraints. It checks possible query execution plans at construction time against the query's consistency constraints and any plans that may produce a result not meeting the consistency constraints are rejected. In this way, the query result is guaranteed to satisfy the query's currency and consistency requirements.Type: ApplicationFiled: March 19, 2004Publication date: September 22, 2005Inventors: Per-Ake Larson, Jonathan Goldstein, Raghu Ramakrishnan, Hongfei Guo