Patents by Inventor Yongqiang Chen

Yongqiang 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).

  • Publication number: 20250042810
    Abstract: A microwave heat treatment method for granulated blast furnace slag is provided, which includes the following steps: subjecting the granulated blast furnace slag to microwave heat treatment at a frequency of 900-930 MHz and then cooling the slag. Microwave rapid heating is utilized to remove the moisture in the granulated blast furnace slag, stress is generated inside the granulated blast furnace slag particles to promote the formation of cracks or the decomposition of the granulated slag particles into small particles. After the microwave reaches a certain power, the microwave is turned off, an air blower is turned on, and thermal stress is generated inside the granulated blast furnace slag particles, so that the particles are further promoted to generate cracks or fragmentation; and then the desired fine powder can be obtained by ball milling the granulated blast furnace slag after microwave heat treatment for a short time.
    Type: Application
    Filed: July 31, 2024
    Publication date: February 6, 2025
    Applicants: Zhengzhou University, Henan Tianma New Materials Co., Ltd
    Inventors: Bingbing FAN, Rui ZHANG, Yongqiang CHEN, Li GUAN, Shuyun MA, Hailong WANG, Hongxia LI, Guoqi LIU, Limeng SONG
  • Patent number: 11502344
    Abstract: A method for recycling lead from spent lead-acid battery paste, relating to the technical field of hydrometallurgy. In the method, firstly a reducing agent, and a lead paste are added into a zinc chloride solution for leaching in a stirring mill to cause lead in the lead paste to enter the solution, a lead cementation is performed by using zinc in the leached solution, after the lead cementation, the electrolytic zinc is produced by controlling an electrodeposition on the zinc chloride solution for a short time, the reducing agent is zinc, lead or hydrogen peroxide, a part of the electrolytic zinc is returned as the reducing agent for leaching, the step of returning the electrolytic zinc as the reducing agent can be omitted when the lead or the hydrogen peroxide is used as the reducing agent.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: November 15, 2022
    Assignee: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
    Inventors: Chengyan Wang, Peng Xing, Yongqiang Chen
  • Publication number: 20210223044
    Abstract: A physical-adjustment-free laser level gauge comprising a core assembly and a cover assembly; the core assembly further comprises a core frame; connecting studs are fixed to the core frame; the cover assembly further comprises a cover body; rigid nut columns are fixed in the cover body through sealing glue; the rigid nut columns are connected with the connecting studs through screws; a light-emitting mechanism mounting seat is fixed on the core frame; the light-emitting mechanism mounting seat is provided with mounting convex blocks; the light-emitting mechanism comprises an annular protrusion mounting portion; the cover body is provided with a rotation mechanism and a refraction mechanism.
    Type: Application
    Filed: February 27, 2018
    Publication date: July 22, 2021
    Inventors: Yongqiang CHEN, Zhenhong LEI, Mingling MAO
  • Publication number: 20200280111
    Abstract: A method for recycling lead from spent lead-acid battery paste, relating to the technical field of hydrometallurgy. In the method, firstly a reducing agent, and a lead paste are added into a zinc chloride solution for leaching in a stirring mill to cause lead in the lead paste to enter the solution, a lead cementation is performed by using zinc in the leached solution, after the lead cementation, the electrolytic zinc is produced by controlling an electrodeposition on the zinc chloride solution for a short time, the reducing agent is zinc, lead or hydrogen peroxide, a part of the electrolytic zinc is returned as the reducing agent for leaching, the step of returning the electrolytic zinc as the reducing agent can be omitted when the lead or the hydrogen peroxide is used as the reducing agent.
    Type: Application
    Filed: October 17, 2017
    Publication date: September 3, 2020
    Applicant: University of Science and Technology Beijing
    Inventors: Chengyan WANG, Peng XING, Yongqiang CHEN
  • Patent number: 8650625
    Abstract: A method and system for securely logging onto a banking system authentication server so that a user credential never appears in the clear during interaction with the system in which a user's credential is DES encrypted, and the DES key is PKI encrypted with the public key of an application server by an encryption applet before being transmitted to the application server. Within the HSM of the application server, the HSM decrypts and re-encrypts the credential under a new DES key known to the authentication server, the re-encrypted credential is forwarded to the authentication server, decrypted with the new DES key known to the authentication server, and verified by the authentication server.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: February 11, 2014
    Assignee: Citibank Development Center, Inc.
    Inventors: Michael Grandcolas, Marc Guzman, Thomas Yee, Dilip Parekh, Yongqiang Chen
  • Patent number: 8146141
    Abstract: A method and system for securely logging onto a banking system authentication server so that a user credential never appears in the clear during interaction with the system in which during a log on process, an encryption applet and the public key of a public/private key pair of a banking application server, the private key for which is known by a hardware security module (HSM) of the banking application, are downloaded by a user's browser. The applet contains code for generating a DES key and performing DES and PKI encryption. A user's credential is DES encrypted, and the DES key is PKI encrypted with the public key of the application server by the applet before being transmitted to the application server.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: March 27, 2012
    Assignee: Citibank Development Center, Inc.
    Inventors: Michael Grandcolas, Marc Guzman, Thomas Yee, Dilip Parekh, Yongqiang Chen