Patents by Inventor Keqiang Zhang

Keqiang Zhang 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: 20240142701
    Abstract: The present application discloses an optical waveguide structure, comprising: a lower cladding layer composed of a first dielectric layer; and a core layer which is composed of a patterned structure of a second material layer and presents a strip structure. A first trench is formed in a top region of the core layer. An upper cladding layer fully fills the first trench, extends to a top surface of the core layer outside the first trench, and coats side faces of the core layer in a width direction of the core layer. A refractive index of the second material layer is greater than a refractive index of the first dielectric layer, and the refractive index of the second material layer is greater than a refractive index of the upper cladding layer. The present application also provides a method for manufacturing an optical waveguide structure.
    Type: Application
    Filed: May 19, 2023
    Publication date: May 2, 2024
    Applicant: Shanghai Huali Microelectronics Corporation
    Inventors: Kai Guo, Keqiang He, Lei Zhang, Haoyu Chen
  • Patent number: 11940009
    Abstract: A bearing seal including an anchoring portion fixed on an inner ring of the bearing, and a sealing portion capable of forming a sealing fit with an outer ring of the bearing, the seal providing rigid slinger of substantially circular shape, the slinger having a root portion formed at a position corresponding to the anchoring portion for stabilization and support, and a radial portion formed in the section corresponding to the area between the anchoring portion and the sealing portion for radial support, wherein the radial portion is formed with at least one slot with the opening direction facing the radial periphery.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: March 26, 2024
    Assignee: Aktiebolaget SKF
    Inventors: Meng Zhang, Keqiang Cao, Yi Zhang, He Zhu
  • Publication number: 20240077112
    Abstract: A cage includes a first sub-part having a plurality of first partitions integrated as a whole and a plurality of first pocket portions formed by adjacent first partitions. A first engaging portion is formed on at least one of the first partitions. A second sub-part includes a plurality of second partitions integrated as a whole and a plurality of second pocket portions formed by adjacent second partitions. A second engaging portion is formed on at least one of the second partitions. A pocket is formed by the first pocket portion and its corresponding second pocket portion. Each first engaging portion snaps with its corresponding second engaging portion. The cage overcomes the harmful umbrella effect found in a one-piece polymer prong-type cage, so that the bearing equipped with this cage can operate under very high speeds. The cage can be part of a ball bearing.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 7, 2024
    Inventors: Gaojie JIANG, Keqiang Cao, Meng Zhang, He Zhu
  • Publication number: 20240077108
    Abstract: A cage includes a first sub-part having a plurality of first partitions integrated as a whole and a plurality of first pocket portions formed by adjacent first partitions. A second sub-part has a plurality of second partitions integrated as a whole and a plurality of second pocket portions formed by adjacent second partitions. A first recess is provided on the first partition belonging to a first set of the plurality of first partitions. A second pin extends along an axial direction from the second partition belonging to a second set of the plurality of second partitions. The second pin is fixed in its corresponding first recess. The first set of first partitions includes any one or more of the plurality of first partitions. The second set of second partitions includes any one or more of the plurality of second partitions and correspond to the first set of first partitions respectively.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Inventors: Keqiang CAO, Gaojie JIANG, Meng ZHANG, He ZHU
  • Patent number: 11633711
    Abstract: The present invention relates to a preparation method of La(OH)3 nanorod/walnut shell biochar composite material (LN-WB), comprising the following steps: putting walnut shell powder into a crucible and pyrolyzing and carbonizing in a muffle furnace at 350° C. to 450° C.; after the pyrolysis is completed, grinding and sieving the obtained biochar, and then repeatedly washing with deionized water; drying the washed biochar for later use; putting an appropriate amount of biochar into the deionized water to form a turbid solution; simultaneously dropwise adding LaCl3 and NaOH to the above turbid solution by using a peristaltic pump; and allowing the obtained mixture to stand at room temperature for 20 to 30 h, washing and drying for later use. The present invention successfully prepares a La(OH)3 nanoparticle-loaded biochar composite material through a simple synthesis technology.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: April 25, 2023
    Assignee: AGRO-ENVIRONMENTAL PROTECTION INSTITUTE, MINISTRY OF AGRICULTURE AND RURAL AFFAIRS
    Inventors: Feng Wang, Yuan Luo, Keqiang Zhang
  • Publication number: 20210213415
    Abstract: The present invention relates to a preparation method of La(OH)3 nanorod/walnut shell biochar composite material (LN-WB), comprising the following steps: putting walnut shell powder into a crucible and pyrolyzing and carbonizing in a muffle furnace at 350° C. to 450° C.; after the pyrolysis is completed, grinding and sieving the obtained biochar, and then repeatedly washing with deionized water; drying the washed biochar for later use; putting an appropriate amount of biochar into the deionized water to form a turbid solution; simultaneously dropwise adding LaCl3 and NaOH to the above turbid solution by using a peristaltic pump; and allowing the obtained mixture to stand at room temperature for 20 to 30 h, washing and drying for later use. The present invention successfully prepares a La(OH)3 nanoparticle-loaded biochar composite material through a simple synthesis technology.
    Type: Application
    Filed: December 18, 2020
    Publication date: July 15, 2021
    Applicant: AGRO-ENVIRONMENTAL PROTECTION INSTITUTE, MINISTRY OF AGRICULTURE AND RURAL AFFAIRS
    Inventors: Feng WANG, Yuan LUO, Keqiang ZHANG
  • Publication number: 20210023238
    Abstract: The antibody-drug conjugates provided herein including embodiments thereof, include the compound triptolide attached to a cancer-specific antibody (e.g., cetuximab) and are, inter alia, useful as highly effective anti-cancer therapeutics. The conjugates provided herein are capable of targeting cancer cells and thereby specifically deliver triptolide to the cancer cell.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Dan Raz, David Horne, Keqiang Zhang, Yuelong Ma
  • Patent number: 9662827
    Abstract: A handle positioning apparatus outside mold for pre-inserted-handle bottle blow molding machine, and a method of use thereof. The apparatus comprises a sliding block base, a handle positioning assembly, and a bottle pre-form positioning assembly. The bottle pre-form positioning assembly is provided in the middle of the sliding block base, and the handle positioning assembly is provided at one end of the sliding block base. The method of use thereof involves the handle positioning apparatus outside mold carrying a bottle pre-form being placed on a bottle pre-form conveying track; at the awaiting blow molding position, a handle is placed into the handle positioning apparatus outside mold, and the same is transported into the mold where the bottle will be blown and once completed, is discharged via the bottle pre-form conveying track.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 30, 2017
    Inventor: Keqiang Zhang
  • Publication number: 20140346716
    Abstract: A handle positioning apparatus outside mould for pre-inserted-handle bottle blow moulding machine, and a method of use thereof. The apparatus comprises a sliding block base, a handle positioning assembly, and a bottle pre-form positioning assembly. The bottle pre-form positioning assembly is provided in the middle of the sliding block base, and the handle positioning assembly is provided at one end of the sliding block base. The method of use thereof involves the handle positioning apparatus outside mould carrying a bottle pre-form being placed on a bottle pre-form conveying track; at the awaiting blow moulding position, a handle is placed into the handle positioning apparatus outside mould, and the same is transported into the mould where the bottle will be blown and once completed, is discharged via the bottle pre-form conveying track.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 27, 2014
    Inventor: Keqiang Zhang