Patents by Inventor Weiyi Li

Weiyi Li 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: 20240395330
    Abstract: A memory device is provided and includes a memory block that has a plurality of memory cells that are arranged in a plurality of word lines. The memory device also includes a plurality of word line switch transistors that are electrically coupled with the plurality of word lines, where the plurality of word lines are grouped into a plurality of zones based on a size of a word line switch transistor associated with each word line of the plurality of word lines. The memory device also includes a bitline biasing circuit for providing a negative biasing voltage to a bitline corresponding to a memory cell of the selected word line during programming of the selected word line and the bitline biasing circuit is configured to set a magnitude of the negative biasing voltage based on which zone of the plurality of zones the selected word line is in.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 28, 2024
    Applicant: Western Digital Technologies, Inc.
    Inventors: Wei Cao, Weiyi Li, Dengtao Zhao, Xiang Yang
  • Publication number: 20240336912
    Abstract: Provided herein, inter alia, are methods and compositions for assembling oligonucleotide fragments in vivo. The methods bypass inefficient cloning methods and the requirement for expensive enzymes. The methods may further be used to assemble long fragments of DNA. The methods may be used to generate variant libraries and combinatorial libraries and may be used to trace biological processes. Also provided herein, inter alia, are methods for in vivo DNA barcoding of oligonucleotide sequences. Methods provided herein are contemplated to produce unique barcode-oligonucleotide fusion sequences for identifying and isolating the oligonucleotide sequences, e.g., from a mixture. Accordingly, also provided are methods of identifying an oligonucleotide from a mixture of oligonucleotides.
    Type: Application
    Filed: March 4, 2022
    Publication date: October 10, 2024
    Inventors: Sasha Levy, Xianan LIU, Takeshi Matsui, Darach Miller, Weiyi LI
  • Patent number: 11661534
    Abstract: This invention relates to a hot melt adhesive composition. The hot melt adhesive composition according to the present invention comprises at least one hydrogenated thermoplastic block copolymer with a melt index greater than or equal to 30 grams per 10 minutes at 190° C./2.16 kg; and at least one polyolefin with a melt viscosity less than or equal to 2000 cPs at 190° C. The hot melt adhesive composition according to the present invention can be applied at low temperature, has excellent T peel strength and low odor after being applied in the disposable products.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: May 30, 2023
    Assignee: HENKEL AG & CO., KGaA
    Inventors: Weiyi Li, Minrui Chen
  • Publication number: 20220102624
    Abstract: One or more layers of a magnetic random access memory (MRAM) stack on a substrate are etched by ion beam etching. An ion beam of an inert gas is generated in an ion beam source chamber and applied to a substrate in a continuous or pulsed manner. Without passing through the ion beam source chamber, a reactive gas is flowed directly into a processing chamber in which the substrate is located, where the reactive gas is pulsed or continuously provided into the processing chamber. The reactive gas may include a carbon-containing gas having a hydroxyl group that is flowed towards the substrate to limit re-deposition of sputtered atoms on exposed surfaces of the substrate from ion beam etching.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 31, 2022
    Inventors: Seokmin YUN, Zhimin WAN, Shuogang HUANG, Weiyi LI, Gowri Channa KAMARTHY
  • Publication number: 20220073790
    Abstract: The present invention provides a hotmelt adhesive composition, comprising: (A) an olefin block copolymer of ethylene and octene, having a melt index of 10 to 35 g/10 min @ 190° C., 2.16 kg, preferably 15 to 30 g/10 min @ 190° C., 2.16 kg, and (B) a wax modified with carboxylic acid and/or carboxylic acid anhydride.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 10, 2022
    Inventors: MinRui Chen, Weiyi Li
  • Publication number: 20210139752
    Abstract: This invention relates to a hot melt adhesive composition. In particular, the present invention relates to a hot melt pressure sensitive adhesive composition having lower melt viscosity under lower application temperature, excellent peel strength when cured, and lower odour.
    Type: Application
    Filed: January 22, 2021
    Publication date: May 13, 2021
    Inventors: Weiyi LI, Minrui Chen
  • Publication number: 20200317970
    Abstract: This invention relates to a hot melt adhesive composition. The hot melt adhesive composition according to the present invention comprises at least one hydrogenated thermoplastic block copolymer with a melt index greater than or equal to 30 grams per 10 minutes at 190° C./2.16 kg; and at least one polyolefin with a melt viscosity less than or equal to 2000 cPs at 190° C. The hot melt adhesive composition according to the present invention can be applied at low temperature, has excellent T peel strength and low odor after being applied in the disposable products.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Weiyi LI, Minrui Chen
  • Patent number: 10166513
    Abstract: A spacer for a membrane module, the spacer comprising: a plurality of first filaments defining a plurality of fluid flow channels, in use the plurality of fluid flow channels being adjacent a membrane of the membrane module; and a plurality of second filaments provided on the plurality of first filaments and extending into the fluid flow channels, the second filaments moveable relative to the first filaments in response to an external stimulus during flow of fluid in the fluid flow channels.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: January 1, 2019
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Weiyi Li, Chuyang Tang, Yi-Ning Wang, William B. Krantz, Anthony Gordon Fane, Wen See Tan, Jian Yuan Lee, Jia An, Chee Kai Chua, Tzyy Haur Chong
  • Publication number: 20180345224
    Abstract: A spacer for a membrane module, the spacer comprising: a plurality of first filaments defining a plurality of fluid flow channels, in use the plurality of fluid flow channels being adjacent a membrane of the membrane module; and a plurality of second filaments provided on the plurality of first filaments and extending into the fluid flow channels, the second filaments moveable relative to the first filaments in response to an external stimulus during flow of fluid in the fluid flow channels.
    Type: Application
    Filed: December 6, 2016
    Publication date: December 6, 2018
    Inventors: Weiyi LI, Chuyang TANG, Yi-Ning WANG, William B. KRANTZ, Anthony Gordon FANE, Wen See TAN, Jian Yuan LEE, Jia AN, Chee Kai CHUA, Tzyy Haur CHONG
  • Patent number: 10090150
    Abstract: A method of forming a low dielectric constant (low-k) dielectric is disclosed. The method includes providing a substrate and forming a dielectric including porogens over the substrate. While subjecting the dielectric to a first pressure, the dielectric is exposed to ultraviolet (UV) radiation. The dielectric is also subject to a second pressure less than 1×10?3 Torr. While subjecting the dielectric to the second pressure, the dielectric is exposed to vacuum UV (VUV) radiation having one or more photon energies greater than 7 eV. Since it is difficult for VUV radiation to travel through a medium at a pressure greater than 10 Torr without being absorbed by intermittent materials, subjecting the dielectric to the second pressure creates a medium wherein the dielectric can be exposed to the VUV radiation. By exposing the dielectric to UV and VUV radiation, the dielectric can achieve a reduced dielectric constant and increased mechanical properties.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: October 2, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: J. Leon Shohet, Huifeng Zheng, Xiangyu Guo, Weiyi Li, Joshua Blatz, Dongfei Pei
  • Publication number: 20180068848
    Abstract: A method of forming a low dielectric constant (low-k) dielectric is disclosed. The method includes providing a substrate and forming a dielectric including porogens over the substrate. While subjecting the dielectric to a first pressure, the dielectric is exposed to ultraviolet (UV) radiation. The dielectric is also subject to a second pressure less than 1×10?3 Torr. While subjecting the dielectric to the second pressure, the dielectric is exposed to vacuum UV (VUV) radiation having one or more photon energies greater than 7 eV. Since it is difficult for VUV radiation to travel through a medium at a pressure greater than 10 Torr without being absorbed by intermittent materials, subjecting the dielectric to the second pressure creates a medium wherein the dielectric can be exposed to the VUV radiation. By exposing the dielectric to UV and VUV radiation, the dielectric can achieve a reduced dielectric constant and increased mechanical properties.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 8, 2018
    Inventors: J. Leon Shohet, Huifeng Zheng, Xiangyu Guo, Weiyi Li, Joshua Blatz, Dongfei Pei
  • Patent number: 9198894
    Abstract: The present invention relates to the preparation of anti-tumor drugs with andrographolide derivatives, which belongs to the field of pharmaceutical technology, and involves 15-benzylidene substituted derivatives of 14-deoxy-11,12-didehydro-andrographolide and their 3,19-ester derivatives. Proved by the experiments, these compounds significantly inhibited the colony formation and migration ability of various cancer cells, and also inhibited the migration ability of vascular endothelial cells in vitro. The compounds of this invention significantly inhibited the tumor growth, invasion, metastasis and angiogenesis on mouse xenograft models, and inhibited the experimental lung metastasis of B16-F10 malignant melanoma cells. Therefore, this class of compounds could be used as the active ingredients for the preparation of antineoplastic drugs, which are of efficiency and low-toxicity.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 1, 2015
    Assignee: Zhengzhou University
    Inventors: Fengjuan Wu, Guifu Dai, Haiwei Xu, Zhiwen Jiang, Liping Zhu, Lijun Yan, Hongmin Liu, Yanan Wang, Weiyi Li, Ruijing Dong
  • Publication number: 20140187627
    Abstract: Disclosed is a use of C15-substituted andrographolide derivatives in preparation of anti-hepatitis B virus medicaments. In the present invention, the HepG2.2.15 cells are used to measure the amount of the hepatitis B virus surface antigen (HBsAg) secretion in the supernatant of the culture; the duck hepatitis B virus (DHBV) is used to infect the model and the DHBV-DNA level in serum is measured, and the pathological change in hepatic tissue is observed. A number of andrographolide derivative compounds are screened, compounds having a good anti-HBV effect are preferred, which has a structure represented by general formula 1 set forth herein. Due to high anti-HBV activity and low toxicity, as well as good protection against hepatic injury, the compounds can be used as the active ingredient for preparing anti-HBV medicaments, thereby providing a new pharmaceutical way for treatment of hepatitis, and broadening the range of clinical medicines.
    Type: Application
    Filed: July 3, 2012
    Publication date: July 3, 2014
    Applicant: ZHENGZHOU UNIVERSITY
    Inventors: Guifu DAI, Haiwei XU, Zhiwen JIANG, Hongmin LIU, Yanan WANG, Kuicheng ZHU, Zhenwei WU, Weiyi LI, Fengjuan WU, Mengjiao LIU, Wei HAN
  • Publication number: 20130237596
    Abstract: The present invention relates to the preparation of anti-tumor drugs with andrographolide derivatives, which belongs to the field of pharmaceutical technology, and involves 15-benzylidene substituted derivatives of 14-deoxy-11,12-didehydro-andrographolide and their 3,19-ester derivatives. Proved by the experiments, these compounds significantly inhibited the colony formation and migration ability of various cancer cells, and also inhibited the migration ability of vascular endothelial cells in vitro. The compounds of this invention significantly inhibited the tumor growth, invasion, metastasis and angiogenesis on mouse xenograft models, and inhibited the experimental lung metastasis of B16-F10 malignant melanoma cells. Therefore, this class of compounds could be used as the active ingredients for the preparation of antineoplastic drugs, which are of efficiency and low-toxicity.
    Type: Application
    Filed: October 19, 2011
    Publication date: September 12, 2013
    Applicant: ZHENGZHOU UNIVERSITY
    Inventors: Guifu Dai, Haiwei Xu, Liping Zhu, Ruijing Dong, Fengjuan Wu, Yanan Wang, Zhiwen Jiang, Lijun Yan, Weiyi Li, Hongmin Liu
  • Publication number: 20100093725
    Abstract: The present invention is directed to semi-solid formulations of inhibitors of phospholipase enzymes, such as cytosolic PLA2, compositions containing the same and processes for manufacture thereof.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 15, 2010
    Inventors: Mannching Sherry Ku, Frances Anne Donahue, Weiyi Li
  • Publication number: 20080240280
    Abstract: A method and system to switch among a plurality of antennae used for wireless communications. A first embodiment is a method for using at least one quality metric and at least one time variation indicator of at least one quality metric to selectively switch among a plurality of antennae to maintain wireless communications. A second embodiment is a method using at least one quality metric and at least one time derivative slope of at least one quality metric to selectively switch among a plurality of antennae to maintain wireless communications. These embodiments can be applied in several wireless communication applications using multiple antennae including, but not limited to, WiMAX applications.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 2, 2008
    Applicant: APACEWAVE TECHNOLOGIES CORPORATION
    Inventor: Weiyi Li
  • Publication number: 20070128270
    Abstract: Pharmaceutical formulations containing 5-cyclopropyl-2-(4-fluorophenyl)-6-[(2-hydroxyethyl)(methylsulfonyl)amino]-N-methyl-1-benzofuran-3-carboxamide and pharmaceutically acceptable additives including at least one surfactant are made.
    Type: Application
    Filed: November 9, 2006
    Publication date: June 7, 2007
    Applicant: WYETH
    Inventors: Mannching Ku, Weiyi Li