Patents by Inventor Jiakai Liu

Jiakai Liu 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).

  • Publication number: 20230381854
    Abstract: A support unit for a roll shaft of a continuous casting guide roll includes a housing having first axial end face, a second axial end face and a through-opening extending from the first axial end face to the second axial end face, a first cover connected to the first axial end face, a first primary isolator arranged radially between the first cover and the roll shaft, and a bearing in the through opening. On a first side of the bearing, a first closed space is partially defined by the bearing, the first cover and the first primary isolator, and the first closed space is pre-filled with a lubricant.
    Type: Application
    Filed: May 11, 2023
    Publication date: November 30, 2023
    Inventors: Weiguang CAO, Jiakai LIU, Zongkang Xu, Weifei GENG
  • Publication number: 20230330741
    Abstract: A guide roller for a continuous casting machine includes a roller seat having bearings, a roller shaft mounted for rotation in the roller seat and at least one roller body mounted on the roller shaft and configured to support a billet. A passive optical sensor is mounted to the roller seat and configured to output optical signals, and an optical fiber extends from the passive optical sensor and is configured to convey the optical signals to a processor configured to determine one or more physical parameters of an installation position of the passive optical sensor based on the optical signals.
    Type: Application
    Filed: March 21, 2023
    Publication date: October 19, 2023
    Inventors: Xing YI, Liang WENG, Jiakai LIU, Weifei GENG, Zongkang XU
  • Patent number: 11754123
    Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: September 12, 2023
    Assignee: Aktiebolaget SKF
    Inventors: Jiakai Liu, Weiguang Cao, Zongkang Xu, Weifei Geng
  • Publication number: 20230191476
    Abstract: A real-time monitoring method for continuous casting process and a stability analysis method for continuous casting process includes several sub-processes divided according to the process sequence of the continuous casting process. The real-time monitoring method includes: determining the current sub-process of continuous casting process according slab length data and slab speed data, performing an abnormality diagnosis on the real-time data of key parameters corresponding to the current sub-process, and generating abnormality diagnosis results corresponding to the current sub-process.
    Type: Application
    Filed: November 19, 2022
    Publication date: June 22, 2023
    Inventors: Gang CHENG, Jiakai LIU
  • Publication number: 20220128095
    Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.
    Type: Application
    Filed: September 20, 2021
    Publication date: April 28, 2022
    Inventors: Jiakai Liu, Weiguang Cao, Zongkang Xu, Weifei Geng
  • Publication number: 20210331233
    Abstract: A bearing block unit for supporting a continuous casting roll, including a bearing block and a roller bearing disposed inside the bearing block. The bearing provides an inner ring raceway, an outer ring raceway, and at least one row of rolling bodies disposed between the inner and outer ring raceways. The inner ring raceway is formed by a complete and continuous independent inner ring. The inner ring is fitted on a roll shaft of the continuous casting roll during installation, for the purpose of supporting the continuous casting roll. The outer ring raceway is at least partially formed by processing of an inner surface of an inner hole of the bearing block. The present invention also relates to a continuous casting roll line and a continuous casting machine using the bearing block unit.
    Type: Application
    Filed: March 21, 2021
    Publication date: October 28, 2021
    Inventors: Jiakai Liu, Xiaofeng Xu
  • Patent number: 9819634
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: November 14, 2017
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Patent number: 9811525
    Abstract: The disclosed techniques provide systems and methods for deletion of end-user messages, message threads, attachments, and/or other message information. More specifically, a key-value store residing in computer memory on the storage system is described. Each value in the key-value store is indexed by a key and structured to include multiple column portions associated with multiple column families. In one embodiment, a deletion column family having an associated retention policy for data stored therein is defined.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 7, 2017
    Assignee: Facebook, Inc.
    Inventors: Ruifang Ge, Rahul Narayan Iyer, Jiakai Liu, Kannan Muthukkaruppan, Dylan Nugent, Anshuman Singh, Karthik Ranganathan
  • Patent number: 9800529
    Abstract: A messaging system that organizes and presents messages to users of the messaging system. The messaging system includes a mailbox module that receives messages and generates conversation threads from the messages. Messages received from different electronic message channels may be aggregated into a common conversation thread. The conversation threads are also organized in a message interface and then presented to a user of the messaging system. The messaging system may include a social networking system that stores social information about users, which can be used to organize the conversation threads. Other features include a multi mode message interface, and a method for adding contextual information to messages.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: October 24, 2017
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein, Drew W. Hamlin, Daniel Hsiao, Kenneth M. Lau, Ross David Bayer, Mark E. Zuckerberg
  • Publication number: 20170118163
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Application
    Filed: January 6, 2017
    Publication date: April 27, 2017
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Patent number: 9590944
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 7, 2017
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Publication number: 20160261547
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Application
    Filed: May 12, 2016
    Publication date: September 8, 2016
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Patent number: 9356905
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: May 31, 2016
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Publication number: 20150120743
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Application
    Filed: December 30, 2014
    Publication date: April 30, 2015
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Patent number: 8984081
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 17, 2015
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Publication number: 20130311587
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Patent number: 8499048
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 30, 2013
    Assignee: Facebook, Inc.
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
  • Publication number: 20120143972
    Abstract: A messaging system that organizes and presents messages to users of the messaging system. The messaging system includes a mailbox module that receives messages and generates conversation threads from the messages. Messages received from different electronic message channels may be aggregated into a common conversation thread. The conversation threads are also organized in a message interface and then presented to a user of the messaging system. The messaging system may include a social networking system that stores social information about users, which can be used to organize the conversation threads. Other features include a multi mode message interface, and a method for adding contextual information to messages.
    Type: Application
    Filed: October 28, 2011
    Publication date: June 7, 2012
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein, Drew W. Hamlin, Daniel Hsiao, Kenneth M. Lau, Ross David Bayer, Mark E. Zuckerberg
  • Publication number: 20120110085
    Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.
    Type: Application
    Filed: October 27, 2010
    Publication date: May 3, 2012
    Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein