Patents by Inventor Haijun Ma

Haijun Ma 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: 11965738
    Abstract: Disclosed is a data analysis-based intelligent deformation monitoring system for mountain landslides, which solves the technical problem in the prior art that when a landslide occurs in a landslide area, it is not possible to implement region-specific monitoring for landslide soil, thus failing to minimize the real-time impact of the landslide area. The present disclosure involves marking a sub-area where a landslide occurs as a landslide area, marking a real-time sliding direction within the landslide area as a landslide flow direction, setting areas at both sides of the landslide flow direction as landslide slopes, generating a control adjustment signal or a risk monitoring signal through landslide slope analysis, and sending the signal to a server.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: April 23, 2024
    Assignee: Northwest University
    Inventors: Haijun Qiu, Yaru Zhu, Dongdong Yang, Zijing Liu, Zhigang Ren, Jianhua Qiang, Shuyue Ma
  • Publication number: 20230392319
    Abstract: The invention provides a steel cord with a construction of n×1, n is the number of the steel filaments of the steel cord, the steel cord has an elongation at 2.5N-50N of less than 1.2% and a twist pitch of greater than 16 mm, each of the steel filaments has a form of helical wave with a wave length L expressed in mm and a wave height H expressed in mm when being unravelled from said steel cord, L is greater than 16 mm, each of the steel filaments has a space volume Vs satisfying that, Vs=L×H2×?/4, and Vs>20 mm3. The invention steel cord is beneficial for the stress distribution.
    Type: Application
    Filed: November 30, 2021
    Publication date: December 7, 2023
    Applicant: NV Bekaert SA
    Inventors: Aijun ZHANG, Haijun MA, Yaodong LI
  • Publication number: 20230026724
    Abstract: Disclosed in the present invention are a substituted nitrogen heterocyclic compound and anesthetic action thereof. Specifically provided a chemical compound as shown in formula I, a stereoisomer thereof, a pharmaceutically acceptable salt thereof, a solvate thereof, a prodrug thereof, a metabolite thereof or a deuterated derivative thereof. The substituted nitrogen heterocyclic compound provided in the present application has good central nervous system inhibition effects, capable of generating sedative, hypnotic and/or general anesthetic effects, and capable of controlling status epilepticus; said substituted nitrogen heterocyclic compound is also characterized by rapid onset of action and rapid recovery, while maintaining positive anesthetic activity; in addition, said substituted nitrogen heterocyclic compound has almost no inhibitory effect on adrenocortical function, low side effects, and resolves technical difficulties in the art.
    Type: Application
    Filed: October 10, 2020
    Publication date: January 26, 2023
    Inventors: Jin LIU, Wensheng ZHANG, Haijun MA, Changhua WANG, Zhenbiao XIE
  • Patent number: 11434205
    Abstract: A compound is shown in formula (I). The derivatives of the compound include a stereoisomer, a pharmaceutically acceptable salt, a solvate, a prodrug, a metabolite, a deuterated derivative. The compound is a structurally novel substituted imidazole formate derivative. Substituted imidazole formate derivatives are used in preparing a drug with sedative, hypnotic and/or anesthetic effects, as well as a drug that can control the state of epilepsy. The compound has a good inhibitory effect on the central nervous system, and provides a new option for clinical screening of and/or preparation of a drug with sedative, hypnotic and/or anesthetic effects and controlling the state of epilepsy.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: September 6, 2022
    Assignee: Chengdu MFS Pharma. Co., Ltd.
    Inventors: Haijun Ma, Changhua Wang, Zhenbiao Xie
  • Patent number: 10850468
    Abstract: A high-speed hydraulic forging press is disclosed. The high-speed hydraulic forging press includes a forging hammer, a movable beam, a main hydraulic cylinder, a single-rod elevation hydraulic cylinder, a plurality of main hydraulic pumps, a high-pressure energy accumulator, an intermediate-pressure energy accumulator, an oil tank, a programmable logic controller and a valve-regulation system. During a rolling process, when a rolling resistance applied to the forging hammer increases to cause pressure in the main hydraulic cylinder to reach a predetermined value, the programmable logic controller controls the valve-regulation system so that the high-pressure energy accumulator stops supplying the hydraulic oil to the main hydraulic cylinder, and that the hydraulic oil in the main hydraulic cylinder is supplied by at least one of the plurality of main hydraulic pumps.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: December 1, 2020
    Assignee: ZHONGJUXIN OCEAN ENGINEERING EQUIPMENT CO., LTD
    Inventors: Lianhua Zhang, Hui Zhang, Haijun Ma
  • Publication number: 20200369621
    Abstract: A compound is shown in formula (I). The derivatives of the compound include a stereoisomer, a pharmaceutically acceptable salt, a solvate, a prodrug, a metabolite, a deuterated derivative. The compound is a structurally novel substituted imidazole formate derivative. Substituted imidazole formate derivatives are used in preparing a drug with sedative, hypnotic and/or anesthetic effects, as well as a drug that can control the state of epilepsy. The compound has a good inhibitory effect on the central nervous system, and provides a new option for clinical screening of and/or preparation of a drug with sedative, hypnotic and/or anesthetic effects and controlling the state of epilepsy.
    Type: Application
    Filed: January 30, 2019
    Publication date: November 26, 2020
    Inventors: Haijun MA, Changhua WANG, Zhenbiao XIE
  • Publication number: 20200230690
    Abstract: A hydraulic forging machine and a method for replacing an upper anvil block thereof are disclosed. The hydraulic forging machine includes locking hydraulic cylinder that is fixed to a movable beam of the hydraulic forging machine when the hydraulic forging machine is in operation. The locking hydraulic cylinder is configured to provide a locking-unlocking function between an upper anvil block of the hydraulic forging machine and the movable beam. The locking hydraulic cylinder has its hydraulic power source supplied from a main hydraulic cylinder or a return hydraulic cylinder, which is also fixed to the movable beam. The present disclosure not only enables an oil supply circuit for the locking hydraulic cylinder to move together with the movable beam, but also simplifies the oil supply circuit for the locking hydraulic cylinder, resulting in an improved reliability of the hydraulic forging machine.
    Type: Application
    Filed: September 19, 2017
    Publication date: July 23, 2020
    Inventors: Lianhua ZHANG, Hui ZHANG, Haijun MA, Baijin CHEN, Yuanshi LI
  • Publication number: 20180281332
    Abstract: A high-speed hydraulic forging press is disclosed. The high-speed hydraulic forging press includes a forging hammer, a movable beam, a main hydraulic cylinder, a single-rod elevation hydraulic cylinder, a plurality of main hydraulic pumps, a high-pressure energy accumulator, an intermediate-pressure energy accumulator, an oil tank, a programmable logic controller and a valve-regulation system. During a rolling process, when a rolling resistance applied to the forging hammer increases to cause pressure in the main hydraulic cylinder to reach a predetermined value, the programmable logic controller controls the valve-regulation system so that the high-pressure energy accumulator stops supplying the hydraulic oil to the main hydraulic cylinder, and that the hydraulic oil in the main hydraulic cylinder is supplied by at least one of the plurality of main hydraulic pumps.
    Type: Application
    Filed: January 12, 2017
    Publication date: October 4, 2018
    Inventors: Lianhua Zhang, Hui Zhang, Haijun Ma