Patents by Inventor Kaifei Zhao

Kaifei 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).

  • Publication number: 20250103517
    Abstract: A computer-implemented method for data communication bus address sharing can include selecting, by at least one processor, one of two or more peripheral devices sharing an address of a data communication bus. The method can additionally include modulating, by the at least one processor, a duty cycle of a clock signal transmitted over the data communication bus to the two or more peripheral devices, wherein the modulating causes a low period of the clock signal to satisfy a threshold condition for indicating selection of the selected one of the two or more peripheral devices. The method can also include performing, by the at least one processor using the address, data communication over the data communication bus with the selected one of the two or more peripheral devices. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Application
    Filed: September 27, 2023
    Publication date: March 27, 2025
    Applicant: Advanced Micro Devices, Inc.
    Inventors: KaiFei Zhao, LiLi Chen, JunDong Yang
  • Patent number: 12181993
    Abstract: A disclosed method for restoring bus functionality includes detecting, by an automatic bus recovery block, that at least one target device on a bus pulls at least one line of the bus to a low level. The method also includes initiating, by the automatic bus recovery block, a timer to time a duration of the low level of the line. Additionally, the method includes detecting, by the automatic bus recovery block, that the duration of the low level of the line exceeds a predetermined time limit. Furthermore, the method includes alerting, by the automatic bus recovery block, a controller device on the bus that the duration of the low level exceeds the predetermined time limit to reset the line of the bus to a high level. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: December 31, 2024
    Assignee: Advanced Micro Devices, Inc.
    Inventors: KaiFei Zhao, LiLi Chen, Wei Han
  • Patent number: 10604474
    Abstract: A method for preparing a new crystalline form of ?-aminobutyric acid, including the steps of: S1: preparing a ?-aminobutyric acid solution at an initial concentration of 0.5-1.0 g/mL by adding crude ?-aminobutyric acid to water; adding an additive to the ?-aminobutyric acid solution, raising the temperature to 50-80° C., stirring to produce a clear solution; and S2: obtaining a suspension by evaporating water from the product of S1 under reduced pressure and at 50-80° C.; obtaining a wet product by filtering the suspension; drying the wet product to obtain the new crystalline form of ?-aminobutyric acid. The preparation method of the new crystalline form of ?-aminobutyric acid is simple, easy to operate, low in energy consumption, economical and environmentally friendly. It is suitable for large-scale industrial production.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: March 31, 2020
    Assignees: Nantong Licheng Biological Engineering Co., Ltd, Tianjin University
    Inventors: Junbo Gong, Kaifei Zhao, Haiyan Xi, Xiaohua Wu, Baohong Hou, Qiuxiang Yin, Jingkang Wang, Feng Jin, Shichao Du, Qinqing Gu, Shiping Tang
  • Patent number: 10487044
    Abstract: The present invention discloses a ?-aminobutyric acid hemihydrate crystal, its molecular formula is C4H9NO2.0.5H2O. It also discloses a method of preparing a ?-aminobutyric acid hemihydrate crystal, including first adding crude ?-aminobutyric acid to water to prepare a ?-aminobutyric acid suspension at an initial concentration of 1.2-2.0 g/mL; then stirring the suspension at a constant temperature of 5-10° C. for 6-12 hours, followed by filtering and drying to obtain the ?-aminobutyric acid hemihydrate crystal. The ?-aminobutyric acid hemihydrate crystal is stable, does not easily absorb moisture and agglomerate, and is convenient for further processing and use. The crystal has a large main particle size, uniform particle size distribution, high bulk density, good flowability, and a purity of ?99%. The preparation method of the crystal according to the present invention is simple, easy to operate, highly efficient and low in energy consumption, and is suitable for large-scale industrial production.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: November 26, 2019
    Assignees: Nantong Licheng Biological Engineering Co., Ltd, Tianjin University
    Inventors: Junbo Gong, Qinqing Gu, Kaifei Zhao, Jiangbo Li, Baohong Hou, Qiuxiang Yin, Jingkang Wang, Yi Sun, Shichao Du, Xin Pan, Zhongshi Liu
  • Publication number: 20190225574
    Abstract: A method for preparing a new crystalline form of ?-aminobutyric acid, including the steps of: S1: preparing a ?-aminobutyric acid solution at an initial concentration of 0.5-1.0 g/mL by adding crude ?-aminobutyric acid to water; adding an additive to the ?-aminobutyric acid solution, raising the temperature to 50-80° C., stirring to produce a clear solution; and S2: obtaining a suspension by evaporating water from the product of S1 under reduced pressure and at 50-80° C.; obtaining a wet product by filtering the suspension; drying the wet product to obtain the new crystalline form of ?-aminobutyric acid. The preparation method of the new crystalline form of ?-aminobutyric acid is simple, easy to operate, low in energy consumption, economical and environmentally friendly. It is suitable for large-scale industrial production.
    Type: Application
    Filed: November 7, 2016
    Publication date: July 25, 2019
    Inventors: Junbo Gong, Kaifei Zhao, Haiyan Xi, Xiaohua Wu, Baohong Hou, Qiuxiang Yin, Jingkang Wang, Feng Jin, Shichao Du, Qinqing Gu, Shiping Tang
  • Publication number: 20180370901
    Abstract: The present invention discloses a ?-aminobutyric acid hemihydrate crystal, its molecular formula is C4H9NO2.0.5H2O. It also discloses a method of preparing a ?-aminobutyric acid hemihydrate crystal, including first adding crude ?-aminobutyric acid to water to prepare a ?-aminobutyric acid suspension at an initial concentration of 1.2-2.0 g/mL; then stirring the suspension at a constant temperature of 5-10° C. for 6-12 hours, followed by filtering and drying to obtain the ?-aminobutyric acid hemihydrate crystal. The ?-aminobutyric acid hemihydrate crystal is stable, does not easily absorb moisture and agglomerate, and is convenient for further processing and use. The crystal has a large main particle size, uniform particle size distribution, high bulk density, good flowability, and a purity of ?99%. The preparation method of the crystal according to the present invention is simple, easy to operate, highly efficient and low in energy consumption, and is suitable for large-scale industrial production.
    Type: Application
    Filed: November 11, 2016
    Publication date: December 27, 2018
    Inventors: Junbo Gong, Qinqing Gu, Kaifei Zhao, Jiangbo Li, Baohong Hou, Qiuxiang Yin, Jingkang Wang, Yi Sun, Shichao Du, Xin Pan, Zhongshi Liu