Patents by Inventor Quan Yu

Quan Yu 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: 20220175495
    Abstract: Disclosed is a force applying device for orthodontic treatment being elastically expandable and configured to generate a restoring force as an orthodontic force for an orthodontic treatment when compressed. The force applying device comprises a first element and a second element capable of moving relative to each other along a first axis. The force applying device for orthodontic treatment is compressed when the first and second elements move towards each other along the first axis. A first arm extends laterally from a first end of the first element away from the second element. A first connecting part of a first connector is fitted over the first arm. A second connecting part of the first connector is to be fitted over a button fixed on a first jaw to connect the first element to the first jaw. Both the first and the second connecting parts are toroidal in shape.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 9, 2022
    Inventors: Bing FANG, Lei HUANG, Wenxuan SHI, Lunguo XIA, Lingjun YUAN, Ning ZHAO, Peijun LU, Zheng HU, Rongjing CHEN, Qingling YOU, Guohua TANG, Xiaogang PAN, Yiming YANG, Fengting CHU, Quan YU, Fang JI, Jun ZHAO, Qiping FENG, Chenjie YANG
  • Publication number: 20220127441
    Abstract: The present invention provides a polypropylene-polyphenylene ether-polystyrene ternary alloy, including the following components in parts by weight: 100 parts of a polypropylene and a polyphenylene ether and a polystyrene, wherein the polypropylene accounts for 10% to 60%, the polyphenylene ether accounts for 10% to 60%, and the polystyrene accounts for 5% to 30%; 5 parts to 25 parts of a compatibilizer; and 10 parts to 60 parts of a polyphosphate compound. The polypropylene-polyphenylene ether-polystyrene ternary alloy of the present invention has an advantage of a less smoke release amount during melt.
    Type: Application
    Filed: December 25, 2019
    Publication date: April 28, 2022
    Inventors: Wenchao WANG, Xianbo HUANG, Nanbiao YE, Quan YU, Chao DING
  • Patent number: 11249590
    Abstract: This application is directed to intra-panel communication in a touch display device in which a touch-integrated timing controller (TTCON) is coupled to touch-embedded source drivers (TSDs) via a plurality of forward links and a set of backward links. The forward links include a first subset of display forward links and a second subset of touch forward links. The TSDs are electrically coupled to a display panel including a plurality of display pixels and a plurality of touch sensors. The TTCON sends a display drive signal including display content data and display control data over the display forward links, and sends a touch control signal including an instruction to initiate an operation mode over the touch forward links. Upon receiving the touch control signal, the TSDs identify the instruction to initiate the operation mode, generate touch data accordingly, and return the touch data to the TTCON via the backward links.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 15, 2022
    Assignee: PARADE TECHNOLOGIES, LTD.
    Inventors: Quan Yu, Zhengyu Yuan, Ross Fosler, Denis Ellis, Zhiqiang Huang, Roel Coppoolse
  • Publication number: 20210397324
    Abstract: This application is directed to intra-panel communication in a touch display device in which a touch-integrated timing controller (TTCON) is coupled to touch-embedded source drivers (TSDs) via a plurality of forward links and a set of backward links. The forward links include a first subset of display forward links and a second subset of touch forward links. The TSDs are electrically coupled to a display panel including a plurality of display pixels and a plurality of touch sensors. The TTCON sends a display drive signal including display content data and display control data over the display forward links, and sends a touch control signal including an instruction to initiate an operation mode over the touch forward links. Upon receiving the touch control signal, the TSDs identify the instruction to initiate the operation mode, generate touch data accordingly, and return the touch data to the TTCON via the backward links.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 23, 2021
    Inventors: Quan Yu, Zhengyu Yuan, Ross Fosler, Denis Ellis, Zhiqiang Huang, Roel Coppoolse
  • Patent number: 11186563
    Abstract: Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral ?-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing ?-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp3)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: November 30, 2021
    Assignee: The Scripps Research Institute
    Inventor: Jin-Quan Yu
  • Publication number: 20210217083
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for grouping a plurality of resources into a plurality of cohorts, wherein each of the plurality of resources is associated with a risk level and a benefit level, and resources in each cohort share the same risk level and the same benefit level; obtaining a plurality of provider-level adjustments; constructing an optimization model for determining a resource flow solution; and according to the plurality of cohort-provider-level adjustments, identifying one or more resources in each of the plurality of cohorts that are provided by a first provider to be transferred to a second provider; and automatically sending one or more requests to the first provider and the second provider to transfer the determined one or more first resources from the first provider to the second provider.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Feng QI, Xingwen ZHANG, Jia YAN, Zhigang HUA, Shuang YANG, Zhen WANG, Chen NI, Yinchao ZHONG, Yanming FANG, Quan YU
  • Patent number: 11021427
    Abstract: The invention includes procedures for stereoselective ?-acylation of carboxylic acids having a ?-carbon atom.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: June 1, 2021
    Assignee: THE SCRIPPS RESEARCH INSTITUTE
    Inventors: Jin-Quan Yu, Pengxiang Shen
  • Publication number: 20210087131
    Abstract: The invention includes procedures for stereoselective ?-acylation of carboxylic acids having a ?-carbon atom.
    Type: Application
    Filed: April 17, 2019
    Publication date: March 25, 2021
    Inventors: Jin-quan Yu, Peng-Xiang Shen
  • Patent number: 10875822
    Abstract: This invention discloses the first example of palladium(II)-catalyzed ?-C(sp3)-H iodination or arylation of a wide range of ketones by using a commercially available aminooxyacetic acid auxiliary. This L, X-type directing group overcomes the limitation of the transient directing group approach for -?C(sp3)-H functionalization of ketones. Practical advantages of this method include simple installation of the auxiliary without chromatography, exceptional tolerance of a-functional groups, double bonds and triple bonds and rapid access to diverse sterically hindered quaternary centers.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: December 29, 2020
    Assignee: THE SCRIPPS RESEARCH INSTITUTE
    Inventors: Jin-quan Yu, Ru-yi Zhu
  • Patent number: 10858383
    Abstract: We report the design of a catalytic, bifunctional template that binds heterocyclic substrate via reversible coordination instead of covalent linkage, allowing remote site-selective C—H olefination of heterocycles. The two metal centers coordinated to this template play different roles; anchoring substrates to the proximity of catalyst and cleaving the remote C—H bonds respectively. Using this strategy, we demonstrate remote site-selective C—H olefination of heterocyclic substrates which do not have functional group handles for covalently attaching templates. For instance the olefination can be an alkenylation of a 3-phenylpyridine with an acrylate alkyl ester selective for the meta position of the phenyl group with respect to the pyridine, or can be an alkenylation of a quinoline with an acrylate alkyl ester selective for the 5-position of the quinoline.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 8, 2020
    Assignee: The Scripps Research Institute
    Inventor: Jin-Quan Yu
  • Patent number: 10759743
    Abstract: Pd(II)-catalyzed g-G(sp3)-H arylation or heteroarylation of primary amines is realized by using 2-hydroxynicotinaldehyde as a catalytic transient directing group. Importantly, the catalyst and the directing group loading can be lowered to 2% and 4% respectively, thus demonstrating high efficiency of this newly designed transient directing group. Heterocyclic aryl iodides are also compatible with this reaction. Furthermore, swift synthesis of 1,2,3,4-tetrahydronaphthyridine derivatives is accomplished using this reaction.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: September 1, 2020
    Assignee: THE SCRIPPS RESEARCH INSTITUTE
    Inventor: Jin-Quan Yu
  • Publication number: 20200255363
    Abstract: This invention discloses the first example of palladium(II)-catalyzed ?-C(sp3)-H iodination or arylation of a wide range of ketones by using a commercially available aminooxyacetic acid auxiliary. This L, X-type directing group overcomes the limitation of the transient directing group approach for -?C(sp3)-H functionalization of ketones. Practical advantages of this method include simple installation of the auxiliary without chromatography, exceptional tolerance of a-functional groups, double bonds and triple bonds and rapid access to diverse sterically hindered quaternary centers.
    Type: Application
    Filed: August 13, 2018
    Publication date: August 13, 2020
    Inventors: Jin-quan Yu, Ruyi Zhu
  • Patent number: 10696635
    Abstract: A class of mono-protected 3-amino-2-hydroxypyridine (MPAHP) ligands that enable the meta-C—H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed, such as in the formation of a reaction product of Formula IA: The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C—H functionalization processes is also illustrated by the development of a meta-C—H amination reaction and a meta-C—H alkynylation reaction.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: June 30, 2020
    Assignee: THE SCRIPPS RESEARCH INSTITUTE
    Inventor: Jin-Quan Yu
  • Publication number: 20200131213
    Abstract: We report the design of a catalytic, bifunctional template that binds heterocyclic substrate via reversible coordination instead of covalent linkage, allowing remote site-selective C—H olefination of heterocycles. The two metal centers coordinated to this template play different roles; anchoring substrates to the proximity of catalyst and cleaving the remote C—H bonds respectively. Using this strategy, we demonstrate remote site-selective C—H olefination of heterocyclic substrates which do not have functional group handles for covalently attaching templates. For instance the olefination can be an alkenylation of a 3-phenylpyridine with an acrylate alkyl ester selective for the meta position of the phenyl group with respect to the pyridine, or can be an alkenylation of a quinoline with an acrylate alkyl ester selective for the 5-position of the quinoline.
    Type: Application
    Filed: February 13, 2018
    Publication date: April 30, 2020
    Inventor: Jin-Quan Yu
  • Patent number: 10611723
    Abstract: An alternative approach to formation of a C—C bond at a meta-position of an aromatic compound is disclosed that employs an ethylenically unsaturated bicyclic compound as a transient mediator to achieve meta-selective C—H activation with a simple and common ortho-directing group. The use of a pyridine-based ligand assists in relaying the palladium catalyst to the meta-position by the unsaturated bicyclic compound following initial ortho-C—H activation.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 7, 2020
    Assignee: The Scripps Research Institute
    Inventor: Jin-Quan Yu
  • Publication number: 20200024362
    Abstract: Disclosed are antibodies thereof that bind to coagulation factor XI (FXI) and/or its activated form factor XIa (FXIa), or to fragments of FXI and/or FXIa, and compositions containing the antibodies. Also disclosed are methods of preparing the antibodies and use of the antibodies for treating and/or preventing coagulation associated conditions such as thrombosis and complications or conditions associated with thrombosis.
    Type: Application
    Filed: August 9, 2019
    Publication date: January 23, 2020
    Inventors: Wenyi Wang, Quan Yu, Xiaowu Liu, John Liuzhong Xu, Zhiqiang Du
  • Patent number: 10475634
    Abstract: The vacuum electro-spray ion source comprises a hollow capillary, a vacuum cavity, a gas inlet pipe, a gas supply device and an adjusting device, wherein a first end of the hollow capillary is a sampling port, and a second end is used as a spray nozzle for vacuum electro-sprays and stretches into the vacuum cavity; the air pressure in the vacuum cavity is ranged from 10 to 200 Pa; one end of the gas inlet pipe stretches into the vacuum cavity, and the other end is connected with the gas supply device; and the adjusting device is configured for adjusting the gas inlet pipe to allow the gas to flow therein intermittently. The ion source may achieve electro-spray ionization in the vacuum environment, so that losses during ion transmission may be reduced to improve the signal intensity and detection limit during detection.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: November 12, 2019
    Assignee: Graduate School at Shenzhen, Tsinghua University
    Inventors: Quan Yu, Qian Zhang, Xiaohao Wang, Xiang Qian, Kai Ni
  • Publication number: 20190315710
    Abstract: Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral ?-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing ?-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp3)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
    Type: Application
    Filed: March 20, 2017
    Publication date: October 17, 2019
    Inventor: Jin-Quan Yu
  • Publication number: 20190241508
    Abstract: Pd(II)-catalyzed g-G(sp3)-H arylation or heteroarylation of primary amines is realized by using 2-hydroxynicotinaldehyde as a catalytic transient directing group. Importantly, the catalyst and the directing group loading can be lowered to 2% and 4% respectively, thus demonstrating high efficiency of this newly designed transient directing group. Heterocyclic aryl iodides are also compatible with this reaction. Furthermore, swift synthesis of 1,2,3,4-tetrahydronaphthyridine derivatives is accomplished using this reaction.
    Type: Application
    Filed: October 19, 2017
    Publication date: August 8, 2019
    Inventor: Jin-Quan Yu
  • Publication number: 20190119212
    Abstract: A class of mono-protected 3-amino-2-hydroxypyridine (MPAHP) ligands that enable the meta-C—H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed. The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C—H functionalization processes is also illustrated by the development of a meta-C—H amination reaction and a meta-C—H alkynylation reaction.
    Type: Application
    Filed: April 18, 2017
    Publication date: April 25, 2019
    Inventor: Jin-Quan Yu