Patents by Inventor Ziyan CHEN

Ziyan CHEN 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: 10875113
    Abstract: A method for remanufacturing a pot broaching tool includes re-grinding cutting teeth on a cutting side of a used pot broaching tool, cool laser welding a rough milled shim to a bottom side of the used pot broaching tool, and grinding the cool laser welded rough milled shim such that an outer surface of the cool laser welded milled shim has a high polished surface. An inner surface of the rough milled shim has an Ra surface finish between 250 and 30 microinches and the ground outer surface of the rough milled shim has a flatness tolerance within +0/?0.0002 inches. Also, the method can include installing the remanufactured pot broaching tool in a pot without the use of a thin shim between the outer surface of the cool laser welded milled shim and an inner surface of the pot.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: December 29, 2020
    Assignee: EST Tools Co., Ltd.
    Inventors: Errong Chen, Ziyan Chen, Mingfeng Pan
  • Publication number: 20200238410
    Abstract: A method for remanufacturing a pot broaching tool includes re-grinding cutting teeth on a cutting side of a used pot broaching tool, cool laser welding a rough milled shim to a bottom side of the used pot broaching tool, and grinding the cool laser welded rough milled shim such that an outer surface of the cool laser welded milled shim has a high polished surface. An inner surface of the rough milled shim has an Ra surface finish between 250 and 30 microinches and the ground outer surface of the rough milled shim has a flatness tolerance within +0/?0.0002 inches. Also, the method can include installing the remanufactured pot broaching tool in a pot without the use of a thin shim between the outer surface of the cool laser welded milled shim and an inner surface of the pot.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Applicant: EST Tools Co., Ltd.
    Inventors: Errong CHEN, Ziyan CHEN, Mingfeng PAN
  • Publication number: 20200180055
    Abstract: A remanufactured pot broaching tool includes an elongated bar with a cutting side and a bottom side spaced part from the cutting side. A milled shim is cool laser bonded to the bottom side of the elongated bar. The milled shim has a thickness between 0.0625 inches and 0.500 inches and a flatness tolerance within +0/?0.0002 inches. A tolerance of a height dimension of the remanufactured pot broaching tool between an outer surface of a set of teeth on the cutting side and the outer elongated surface of the milled shim cool laser welded to the bottom side of the elongated bar is +0/?0.0002 inches.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 11, 2020
    Applicant: EST Tools Co., Ltd.
    Inventors: Errong CHEN, Ziyan CHEN, Mingfeng PAN
  • Patent number: 10218786
    Abstract: Embodiments of the present invention relate to web content communication. In accordance with embodiments of the present invention, content items contained in the requested web content may be dynamically analyzed and classified according to their requirement for individual users. Web content items with different requirements are transmitted to the users based on protocols having different transportation characteristics. Those important content items are transmitted based on a more accurate, reliable protocol, thereby ensuring the quality of transmission. Those unimportant content items are transmitted based on a protocol with less or without guarantee of transmission accuracy. In this way, response delays can be reduced. Moreover, even if part or all of the unimportant content items are lost or delayed, the user experience can be maintained on an acceptable level.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: February 26, 2019
    Assignee: NOKIA CORPORATION
    Inventors: Ziyan Chen, Shouyan Chen, Maokun Han, Chaobin Guo
  • Patent number: 9473612
    Abstract: A method, apparatus and a computer program is provided. The apparatus comprises: at least one processor; and at least one memory storing computer program code configured, working with the at least one processor, to cause at least the following to be performed: responding to user input by switching a device from an unlocked state to a locked state; and setting a user input process for switching the device from the locked state to the unlocked state, in dependence upon the user input provided to switch the device from the unlocked state to the locked state.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: October 18, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Maokun Han, Chaobin Guo, Ziyan Chen, Guangjun Wang
  • Publication number: 20150304474
    Abstract: A method, apparatus and a computer program is provided. The apparatus comprises: at least one processor; and at least one memory storing computer program code configured, working with the at least one processor, to cause at least the following to be performed: responding to user input by switching a device from an unlocked state to a locked state; and setting a user input process for switching the device from the locked state to the unlocked state, in dependence upon the user input provided to switch the device from the unlocked state to the locked state.
    Type: Application
    Filed: November 28, 2012
    Publication date: October 22, 2015
    Inventors: Maokun Han, Chaobin Guo, Ziyan Chen, Guangjun Wang
  • Publication number: 20150304415
    Abstract: Embodiments of the present invention relate to web content communication. In accordance with embodiments of the present invention, content items contained in the requested web content may be dynamically analyzed and classified according to their requirement for individual users. Web content items with different requirements are transmitted to the users based on protocols having different transportation characteristics. Those important content items are transmitted based on a more accurate, reliable protocol, thereby ensuring the quality of transmission. Those unimportant content items are transmitted based on a protocol with less or without guarantee of transmission accuracy. In this way, response delays can be reduced. Moreover, even if part or all of the unimportant content items are lost or delayed, the user experience can be maintained on an acceptable level.
    Type: Application
    Filed: January 16, 2013
    Publication date: October 22, 2015
    Inventors: Ziyan CHEN, Shouyan CHEN, Maokun HAN, Chaobin GUO
  • Patent number: D1109732
    Type: Grant
    Filed: February 25, 2025
    Date of Patent: January 20, 2026
    Assignee: MO YOUNG LIMITED
    Inventors: Ziyan Chen, Wuxian Wang