Patents by Inventor Da Zhao
Da Zhao 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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Publication number: 20240167341Abstract: A full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent channels is provided. The DTH hammer includes a drill rod, a drill rod joint, a drill rod air pipe, a diversion chamber, at least one hammer, and an upper pressure plate, a lower pressure plate, and an upper outer hammer protection pipe for fixing the hammer, where at least one jet air pipe communicated with the diversion chamber and at least one drill cuttings discharge pipe are arranged between the hammers; lower ends of the jet air pipe and the drill cuttings discharge pipe are located close to a hammer drill bit; and the lower end of the jet air pipe is provided with jet holes for producing a negative pressure.Type: ApplicationFiled: November 17, 2023Publication date: May 23, 2024Applicant: Haozhou Drilling Engineering Machinery (Shandong) Co., Ltd.Inventors: Yechen ZHAO, Chengliang YAN, Fengzheng JING, Yeshui ZHAO, Yechun ZHAO, Da ZHANG
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Publication number: 20240168640Abstract: The present disclosure provides a method for performing a programming operation on a memory cell connected to a bit line and controlled by a word line. The method includes applying a first programming voltage signal to the word line to program the memory cell into a first state, applying a first voltage to the bit line, performing a verify operation when the memory cell is in a second state, determining a classification of the memory cell based on the verify operation, applying a second voltage to the bit line based on the determined classification, applying a second programming voltage signal to the word line to program the memory cell into the first state, applying a third voltage to the bit line, applying a third programming voltage signal to the word line to program the memory cell into the first state, and applying a fourth voltage to the bit line.Type: ApplicationFiled: December 15, 2022Publication date: May 23, 2024Applicant: Yangtze Memory Technologies Co., Ltd.Inventors: Zhe LUO, Da LI, Feng XU, Yaoyao TIAN, Jianquan JIA, XiangNan ZHAO
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Patent number: 11750692Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including retrieving data from the database connection pool, monitoring the data to determine whether the connection pool is at risk of an exhaustion condition, analyzing the data to determine whether one or more clients accessing the database connection pool are offenders upon determining that the connection pool is at risk and throttling access to the one or more clients accessing the database connection pool upon determining the one or more clients to be offenders.Type: GrantFiled: September 15, 2021Date of Patent: September 5, 2023Assignee: Salesforce, Inc.Inventors: Olumayokun Obembe, Da Zhao, Fabio Meireles Fernandez Valbuena, Ping-Hsiu Hsieh, Xiaodan Wang, Vijayanth Devadhar, Jason Woods, Ashwini Bijwe, Yichuan Cai, Paul E. Jatkowski, Kin Lun Wong, Sidarth Conjeevaram, Zeyu Zheng, Jae Young Park
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Patent number: 11745440Abstract: There is provided an automated lamination system for embedding printed electronic element(s) in a composite structure. The automated lamination system includes a supply of composite prepreg material, a layup tool assembly, and a modified automated lamination apparatus laying up layer(s) of the composite prepreg material on the layup tool assembly, to form the composite structure. The modified automated lamination apparatus includes a section preparation pre-printing apparatus preparing section(s) on a top surface of a top layer of the layer(s), to obtain prepared section(s), and includes a non-contact direct write printing apparatus mechanically coupled to the section preparation pre-printing apparatus, and includes one or more supplies of electronic element materials, printed with the non-contact direct write printing apparatus, on each of the prepared section(s), to obtain the printed electronic element(s), that are embedded in the composite structure.Type: GrantFiled: April 3, 2020Date of Patent: September 5, 2023Assignee: The Boeing CompanyInventors: Da Zhao, Keith Daniel Humfeld
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Patent number: 11714821Abstract: Techniques and structures to facilitate automatic adjustment of a database connection pool, including calculating a first value indicating a number of connections of to be provided by a first of a plurality of application servers, determining whether the first value is equal to a second value previously calculated to indicate the number of connections to be provided by the first application server and adjusting the database connection pool by providing the number of connections to access the database as indicated by the first value upon a determination that the first value is not equal to the second value.Type: GrantFiled: September 15, 2021Date of Patent: August 1, 2023Assignee: Salesforce, Inc.Inventors: Olumayokun Obembe, Paul Sydell, Da Zhao, Jason Woods, Ashwini Bijwe, Vijay Devadhar, Raksha Subramanyam, Shruti Ashutosh Sharma
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Patent number: 11636067Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including receiving a plurality of events from a plurality of application servers operating as a database connection pool, categorizing each of the plurality of events, including generating a categorization message for each of the plurality events, wherein each categorization message includes one or more fields having contextual information to identify an event type to which an event is associated, analyzing the categorization messages to generate an event record; and generating a report based on the event record including one or more performance measurements to indicate an effectiveness of management of the database connection pool.Type: GrantFiled: October 4, 2019Date of Patent: April 25, 2023Assignee: salesforce.com, inc.Inventors: Olumayokun Obembe, Da Zhao, Tony Wong, Raksha Subramanyam
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Publication number: 20230110698Abstract: Disclosed are some implementations of systems, apparatus, methods and computer program products for implementing a shim driver configurable to provide a database driver. A shim driver class is loaded from a class path and instantiated such that a shim driver is generated. A directory path and database driver class name are obtained from a configuration file. An application transmits a request for a database driver via an application programming interface (API) of the shim driver, where the request includes the directory path and database driver class name. The shim driver loads a database driver class identified by the database driver class name using the directory path, instantiates the database driver class such that a first database driver is generated, and provides the first database driver responsive to the request.Type: ApplicationFiled: October 5, 2021Publication date: April 13, 2023Applicant: Salesforce.com, Inc.Inventors: Vadim YAROVOY, Raghavendran HANUMANTHARAU, Olga TIKHONOVA, Da ZHAO, Arundhati TAMBE, Shruti SHARMA, Jason WOODS
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Patent number: 11499127Abstract: A multi-layered microfluidic system featuring tissue chambers for cells in a first layer and a plurality of medium channels for culture medium in a second layer. The tissue chambers fluidly connect to the medium channels such that media flows from the medium channels to the tissue chambers, forming large-scale perfused capillary networks. The capillary networks can undergo angiogenesis and vertical anastomosis. The multi-layered configuration of the system of the present invention allows for flexibility in design.Type: GrantFiled: October 22, 2018Date of Patent: November 15, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Abraham P. Lee, Tao Yue, Da Zhao, Xiaolin Wang, Christopher C. Hughes
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Publication number: 20220004559Abstract: Techniques and structures to facilitate automatic adjustment of a database connection pool, including calculating a first value indicating a number of connections of to be provided by a first of a plurality of application servers, determining whether the first value is equal to a second value previously calculated to indicate the number of connections to be provided by the first application server and adjusting the database connection pool by providing the number of connections to access the database as indicated by the first value upon a determination that the first value is not equal to the second valueType: ApplicationFiled: September 15, 2021Publication date: January 6, 2022Inventors: Olumayokun Obembe, Paul Sydell, Da Zhao, Jason Woods, Ashwini Bijwe, Vijay Devadhar, Raksha Subramanyam, Shruti Ashutosh Sharma
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Publication number: 20220006858Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including retrieving data from the database connection pool, monitoring the data to determine whether the connection pool is at risk of an exhaustion condition, analyzing the data to determine whether one or more clients accessing the database connection pool are offenders upon determining that the connection pool is at risk and throttling access to the one or more clients accessing the database connection pool upon determining the one or more clients to be offenders.Type: ApplicationFiled: September 15, 2021Publication date: January 6, 2022Inventors: Olumayokun Obembe, Da Zhao, Fabio Meireles Fernandez Valbuena, Ping-Hsiu Hsieh, Xiaodan Wang, Vijayanth Devadhar, Jason Woods, Ashwini Bijwe, Yichuan Cai, Paul E. Jatkowski, Kin Lun Wong, Sidarth Conjeevaram, Zeyu Zheng, Jae Young Park
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Patent number: 11165857Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including retrieving data from the database connection pool, monitoring the data to determine whether the connection pool is at risk of an exhaustion condition, analyzing the data to determine whether one or more clients accessing the database connection pool are offenders upon determining that the connection pool is at risk and throttling access to the one or more clients accessing the database connection pool upon determining the one or more clients to be offenders.Type: GrantFiled: October 23, 2019Date of Patent: November 2, 2021Assignee: salesforce.com, inc.Inventors: Olumayokun Obembe, Da Zhao, Fabio Meireles Fernandez Valbuena, Ping-Hsiu Hsieh, Xiaodan Wang, Vijayanth Devadhar, Jason Woods, Ashwini Bijwe, Yichuan Cai, Paul E. Jatkowski, Kin Lun Wong, Sidarth Conjeevaram, Zeyu Zheng, Jae Young Park
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Patent number: 11151150Abstract: Techniques and structures to facilitate automatic adjustment of a database connection pool, including calculating a first value indicating a number of connections of to be provided by a first of a plurality of application servers, determining whether the first value is equal to a second value previously calculated to indicate the number of connections to be provided by the first application server and adjusting the database connection pool by providing the number of connections to access the database as indicated by the first value upon a determination that the first value is not equal to the second value.Type: GrantFiled: September 13, 2019Date of Patent: October 19, 2021Assignee: salesforce.com, inc.Inventors: Olumayokun Obembe, Paul Sydell, Da Zhao, Jason Woods, Ashwini Bijwe, Vijay Devadhar, Raksha Subramanyam, Shruti Ashutosh Sharma
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Publication number: 20210308961Abstract: There is provided an automated lamination system for embedding printed electronic element(s) in a composite structure. The automated lamination system includes a supply of composite prepreg material, a layup tool assembly, and a modified automated lamination apparatus laying up layer(s) of the composite prepreg material on the layup tool assembly, to form the composite structure. The modified automated lamination apparatus includes a section preparation pre-printing apparatus preparing section(s) on a top surface of a top layer of the layer(s), to obtain prepared section(s), and includes a non-contact direct write printing apparatus mechanically coupled to the section preparation pre-printing apparatus, and includes one or more supplies of electronic element materials, printed with the non-contact direct write printing apparatus, on each of the prepared section(s), to obtain the printed electronic element(s), that are embedded in the composite structure.Type: ApplicationFiled: April 3, 2020Publication date: October 7, 2021Inventors: Da Zhao, Keith Daniel Humfeld
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Publication number: 20210126964Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including retrieving data from the database connection pool, monitoring the data to determine whether the connection pool is at risk of an exhaustion condition, analyzing the data to determine whether one or more clients accessing the database connection pool are offenders upon determining that the connection pool is at risk and throttling access to the one or more clients accessing the database connection pool upon determining the one or more clients to be offenders.Type: ApplicationFiled: October 23, 2019Publication date: April 29, 2021Inventors: Olumayokun Obembe, Da Zhao, Fabio Meireles Fernandez Valbuena, Ping-Hsiu Hsieh, Xiaodan Wang, Vijayanth Devadhar, Jason Woods, Ashwini Bijwe, Yichuan Cai, Paul E. Jatkowski, Kin Lun Wong, Sidarth Conjeevaram, Zeyu Zheng, Jae Young Park
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Publication number: 20210103561Abstract: Techniques and structures to prevent exhaustion of a database connection pool, including receiving a plurality of events from a plurality of application servers operating as a database connection pool, categorizing each of the plurality of events, including generating a categorization message for each of the plurality events, wherein each categorization message includes one or more fields having contextual information to identify an event type to which an event is associated, analyzing the categorization messages to generate an event record; and generating a report based on the event record including one or more performance measurements to indicate an effectiveness of management of the database connection pool.Type: ApplicationFiled: October 4, 2019Publication date: April 8, 2021Inventors: Olumayokun Obembe, Da Zhao, Tony Wong, Raksha Subramanyam
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Publication number: 20210081427Abstract: Techniques and structures to facilitate automatic adjustment of a database connection pool, including calculating a first value indicating a number of connections of to be provided by a first of a plurality of application servers, determining whether the first value is equal to a second value previously calculated to indicate the number of connections to be provided by the first application server and adjusting the database connection pool by providing the number of connections to access the database as indicated by the first value upon a determination that the first value is not equal to the second valueType: ApplicationFiled: September 13, 2019Publication date: March 18, 2021Inventors: Olumayokun Obembe, Paul Sydell, Da Zhao, Jason Woods, Ashwini Bijwe, Vijay Devadhar, Raksha Subramanyam, Shruti Ashutosh Sharma
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Publication number: 20190119619Abstract: A multi-layered microfluidic system featuring tissue chambers for cells in a first layer and a plurality of medium channels for culture medium in a second layer. The tissue chambers fluidly connect to the medium channels such that media flows from the medium channels to the tissue chambers, forming large-scale perfused capillary networks. The capillary networks can undergo angiogenesis and vertical anastomosis. The multi-layered configuration of the system of the present invention allows for flexibility in design.Type: ApplicationFiled: October 22, 2018Publication date: April 25, 2019Inventors: Abraham P. Lee, Tao Yue, Da Zhao, Xiaolin Wang
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Patent number: 9938472Abstract: The present invention relates to a method and a device for enclosed recycling of oil-water-sludge in an oil shale dry distillation system, comprising: scrubbing and condensing oil shale dry distillation gas at a gathering pipe section, a gas tower section, an air tower section, and a cooling tower section respectively to recycle shale oil section by section; using a separator at an outlet of each section to purify and collect the shale oil, while purifying and recycling scrubbing/cooling water; using multistage dedusters to remove oil sludge entrained in an oil-water product; using an oil sludge collecting tank and a filter after the deduster to concentrate and recycle an oil sludge; and using cyclones before and after the gas tower section to remove aerosol particles and water drops entrained in circulatory gas.Type: GrantFiled: December 13, 2011Date of Patent: April 10, 2018Assignees: Shanghai Huachang Enviromental Protection Co. Ltd., Engineering Technology Research Center, Fushun Mining Group Co., Ltd.Inventors: Mingfu Bao, Hualin Wang, Dasong Xing, Jiangang Wang, Da Zhao, Xin Cui, Rongpu Zhang, Yuan Huang, Ling Shen, Qiang Yang, Yi Fan
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Publication number: 20140001098Abstract: The present invention relates to a method and a device for enclosed recycling of oil-water-sludge in an oil shale dry distillation system. According to the method, the technology is advanced, equipment investment costs are low, the occupied area is small, the failure rate is low, a highly pure shale oil product and a highly concentrated oil sludge product can be obtained efficiently, and the waste water generated in the purification and concentration processes can be recycled, thereby achieving full enclosure of the device system, greatly reducing the energy consumption, and improving the oil shale dry distillation process in the prior art.Type: ApplicationFiled: December 13, 2011Publication date: January 2, 2014Applicant: Shanghai Huachang Environmental Protection Co., Ltd.Inventors: Mingfu Bao, Hualin Wang, Dasong Xing, Jiangang Wang, Da Zhao, Xin Cui, Rongpu Zhang, Yuan Huang, Ling Shen, Qiang Yang, Yi Fan