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).

  • Patent number: 11952355
    Abstract: 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: Grant
    Filed: June 17, 2019
    Date of Patent: April 9, 2024
    Assignee: Shenyang Sinochem Agrochemicals R&D Co., Ltd.
    Inventors: Hongfei Wu, Xueming Cheng, Libao Xu, Chunxiao Guo, Jingbo Xu, Ningning Sun, Haibo Yu
  • Patent number: 11926787
    Abstract: 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: Grant
    Filed: April 21, 2020
    Date of Patent: March 12, 2024
    Assignees: PetroChina Company Limited, CNPC Engineering Technology R&D Company Limited
    Inventors: 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
  • Publication number: 20170325634
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: November 16, 2017
    Applicant: Dow Global Technologies LLC
    Inventors: Jie Cai, Yongjin Guo, Jeffery D. Zawisza, Cheng Chen, Dachao Li, Wei Liu, Jing Chen, David Hongfei Guo
  • Publication number: 20140228490
    Abstract: 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: Application
    Filed: August 31, 2011
    Publication date: August 14, 2014
    Inventors: Journey Lu Zhu, Bin Li, Lu Lan, Given Jing Chen, Qin Deng, David Hongfei Guo
  • Patent number: 7970746
    Abstract: 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: Grant
    Filed: September 26, 2006
    Date of Patent: June 28, 2011
    Assignee: Microsoft Corporation
    Inventors: Praveen Seshadri, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, James A. Holt, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
  • Patent number: 7739262
    Abstract: 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: Grant
    Filed: March 19, 2004
    Date of Patent: June 15, 2010
    Assignee: Microsoft Corporation
    Inventors: Per-Åke Larson, Jonathan David Goldstein, Raghu Ramakrishnan, Hongfei Guo
  • Patent number: 7730068
    Abstract: 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: Grant
    Filed: September 26, 2006
    Date of Patent: June 1, 2010
    Assignee: Microsoft Corporation
    Inventors: 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
  • Publication number: 20070294312
    Abstract: 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: Application
    Filed: September 26, 2006
    Publication date: December 20, 2007
    Applicant: MICROSOFT CORPORATION
    Inventors: Praveen Seshadri, Michiel J. Wories, Hongfei Guo, Ciprian Gerea, Daniel T. Jones, James A. Holt, Grigory Pogulsky, Sethu Srinivasan, James K. Howey
  • Publication number: 20070288500
    Abstract: 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: Application
    Filed: September 26, 2006
    Publication date: December 13, 2007
    Applicant: MICROSOFT CORPORATION
    Inventors: 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
  • Publication number: 20050210010
    Abstract: 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: Application
    Filed: March 19, 2004
    Publication date: September 22, 2005
    Inventors: Per-Ake Larson, Jonathan Goldstein, Raghu Ramakrishnan, Hongfei Guo