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: 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
  • Publication number: 20190111821
    Abstract: An assist grip includes an outer tubular portion having first and second fitted portions; a first fixed end portion having a first body portion inserted into one end of the outer tubular portion and a first fitting end portion extending from the first body portion to engage the first fitted portion of the outer tubular portion; and a second fixed end portion having a second body portion inserted into another end of the outer tubular portion and a second fitting end portion extending from the second body portion to engage the second fitted portion of the outer tubular portion.
    Type: Application
    Filed: March 28, 2017
    Publication date: April 18, 2019
    Inventor: Yong Quan YU
  • Patent number: 10197089
    Abstract: A clip for attaching an attaching member to an attached member through a male connector of the attached member, includes a main body portion; a locking portion for engaging the male connector; a claw portion having elasticity to deform when inserted into a hole of the attaching member, and to return to an original form after passing through the hole; a first flange portion extending radially outwardly from an outer circumferential surface of the main body portion; a second flange portion extending radially outwardly from the outer circumferential surface of the main body portion between the first flange portion and the claw portion, for sandwiching the attaching member between the first and second flange portions; and a tool hooking portion on the another side of the main body portion, for receiving a tool to rotate in respect to the male connector.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 5, 2019
    Assignee: NIFCO AMERICA CORP.
    Inventor: Yong Quan Yu
  • Patent number: 10161904
    Abstract: A method for tracing a distribution of moving ions in an ion mobility spectrometer is provided, including steps: first selecting a sample having light-emitting characteristics as a tracing sample; subsequently, ionizing the tracing sample by using an ionization source, and feeding ions of the tracing sample to a drift tube of the ion mobility spectrometer; using a plate to collect the ions at a cross section to be detected; and finally processing the ions collected on the plate by using an appropriate means, thereby enabling the ions to emit light, and displaying a distribution view of movement positions of the ions on the cross section. By combining a light-emitting tracing means and movements of charged ions in an ion mobility spectrometer, it is able to master a position distribution of the charged ions in the ion mobility spectrometer more intuitively and practically.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: December 25, 2018
    Assignee: GRADUATE SCHOOL AT SHENZHEN, TSINGHUA UNIVERSITY
    Inventors: Kai Ni, Kaitai Guo, Quan Yu, Binchao Tang, Zhou Yu, Xiang Qian, Xiaohao Wang
  • Publication number: 20180325312
    Abstract: An electric grill used to cook food items positioned between upper and lower grilling surfaces is disclosed. The electric grill includes a base portion having outer surfaces and a first inner grilling surface contained therein, an lid portion pivotably connected to the lower base portion and having outer surfaces and a second inner grilling surface contained therein, a handle functionally connected to the lid portion to pivot the lid portion between an open position and a closed position, and an electronic control interface positioned on the handle configured to control the operation of the first and second inner grilling surfaces.
    Type: Application
    Filed: January 9, 2018
    Publication date: November 15, 2018
    Inventors: Jung S. Moon, Jian Jiang Liu, Bao Quan Yu
  • Publication number: 20180301328
    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: Application
    Filed: May 16, 2018
    Publication date: October 18, 2018
    Inventors: Quan YU, Qian ZHANG, Xiaohao WANG, Xiang QIAN, Kai NI
  • Publication number: 20180255960
    Abstract: An automatic beverage system for producing a hot flavored beverage. The system includes a base unit having a water reservoir, a control system for heating liquid from the reservoir, a cartridge arm having a water injector and a cartridge holder, a pump and tubing system connecting the water reservoir to the cartridge holder and used to move water, the control system housed within the base unit and coupled to the heating element and pump to control temperature and movement of the liquid from the reservoir to the cartridge holder, and a container base positioned in an area adjacent the base unit and below the cartridge holder. The cartridge holder is adapted to receive interchangeable cartridges depending on the type and size of beverage desired. The beverage system is capable of using a beverage pod to dispense an individual cup of coffee or the like, and it is also capable of brewing larger volumes of coffee using freshly ground coffee beans.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 13, 2018
    Inventors: Jung S. Moon, Jian Jiang Liu, Bao Quan Yu
  • Publication number: 20180220834
    Abstract: An automatic beverage system for producing a hot flavored beverage. The system includes a base unit having a water reservoir, a control system for heating liquid from the reservoir, a cartridge arm having a water injector and a cartridge holder, a pump and tubing system connecting the water reservoir to the cartridge holder and used to move water, the control system housed within the base unit and coupled to the heating element and pump to control temperature and movement of the liquid from the reservoir to the cartridge holder, and a container base positioned in an area adjacent the base unit and below the cartridge holder. The cartridge holder is adapted to receive interchangeable cartridges depending on the type and size of beverage desired. The beverage system is capable of using a beverage pod to dispense an individual cup of coffee or the like, and it is also capable of brewing larger volumes of coffee using freshly ground coffee beans.
    Type: Application
    Filed: January 10, 2018
    Publication date: August 9, 2018
    Inventors: Jung S. Moon, Jian Jiang Liu, Bao Quan Yu
  • Publication number: 20180190220
    Abstract: A method including receiving a first row of display data for a first time period, and determining a value of a specified bit position for first portions of a first plurality of multi-bit portions in the first row. The method further includes receiving a second row of display data for a second time period, and determining a value of the specified bit position for second portions of a second plurality of multi-bit portions in the second row. Based on the determining, identifying second portions that indicate a change in the value of the specified bit position from the first time period to the second time period, and identifying an output channel associated with each identified portion. The method further includes grouping each identified output channel into a first or second group based on a polarity type, and connecting the identified output channels together within each group.
    Type: Application
    Filed: February 23, 2018
    Publication date: July 5, 2018
    Inventors: Quan Yu, Ta-tao Hsu, Yueh-lin Yang, Haijun Chen, Kuo-cheng Huang, Nelson Rao
  • Publication number: 20180182329
    Abstract: A method including receiving information and a row of display data for display on a row of a display panel, sending the data to channels in accordance with the information, each channel supplying a portion of the row of display data to a column of pixels in the display panel using one a source driver, outputting, by a plurality of source drivers, the row of display data to the row of the display panel, and receiving a row completion indicator subsequent to the outputting. The method further includes determining, during a polarity period, a polarity state of a portion of the row of display data, identifying a group of source drivers, generating charge sharing enable signal(s) using the row completion indicator, and connecting outputs of source drivers in the identified group of source drivers together during the polarity period using the charge sharing enable signal(s).
    Type: Application
    Filed: February 23, 2018
    Publication date: June 28, 2018
    Inventors: Quan Yu, CuiHua Jia, Ta-Tao Hsu, Yueh-Lin Yang, Haijun Chen, Kuo-Cheng Huang
  • Publication number: 20180058493
    Abstract: A clip for attaching an attaching member to an attached member through a male connector of the attached member, includes a main body portion; a locking portion for engaging the male connector; a claw portion having elasticity to deform when inserted into a hole of the attaching member, and to return to an original form after passing through the hole; a first flange portion extending radially outwardly from an outer circumferential surface of the main body portion; a second flange portion extending radially outwardly from the outer circumferential surface of the main body portion between the first flange portion and the claw portion, for sandwiching the attaching member between the first and second flange portions; and a tool hooking portion on the another side of the main body portion, for receiving a tool to rotate in respect to the male connector.
    Type: Application
    Filed: September 1, 2016
    Publication date: March 1, 2018
    Inventor: Yong Quan YU
  • Publication number: 20180009739
    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: Application
    Filed: January 28, 2016
    Publication date: January 11, 2018
    Inventor: Jin-Quan Yu
  • Publication number: 20170219524
    Abstract: A method for tracing a distribution of moving ions in an ion mobility spectrometer is provided, including steps: first selecting a sample having light-emitting characteristics as a tracing sample; subsequently, ionizing the tracing sample by using an ionization source, and feeding ions of the tracing sample to a drift lube of the ion mobility spectrometer; using a plate to collect the ions at a to-be-detected cross section; and finally processing the ions collected on the plate by using an appropriate means, thereby enabling the ions to emit light, and displaying a distribution view of movement positions of the ions on the to-be-detected cross section. By combining a light-emitting tracing means and movements of charged ions in an ion mobility spectrometer, it is able to master a position distribution of the charged ions in the ion mobility spectrometer more intuitively and practically.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Inventors: Kai NI, Kaitai GUO, Quan YU, Binchao TANG, Zhou YU, Xiang QIAN, Xiaohao WANG
  • Patent number: 9418607
    Abstract: A system and method are disclosed to utilize Gray code in order to reduce the power consumption of column drivers in a display system. Binary source data is received from a timing controller. A Gray code digitizer converts and encodes the binary source data into a binary portion of data and a Gray code data. The binary portion data and the Gray code data are transmitted through a shift register to a digital-to-analog converter. The shift register consumes less power processing the converted binary portion of data and Gray code data than the corresponding binary source data. The digital-to-analog converter decodes the Gray code and generates corresponding gamma voltage levels for display use.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: August 16, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Ta-Tao Hsu, Quan Yu, Yueh-Lin Yang
  • Patent number: 9361838
    Abstract: A system and method are disclosed to utilize Gray code in order to reduce the power consumption of column drivers in a display system. Binary source data is received from a timing controller. A Gray code digitizer converts and encodes the binary source data into a binary portion of data and a Gray code data. The binary portion data and the Gray code data are transmitted through a shift register to a digital-to-analog converter. The shift register consumes less power processing the converted binary portion of data and Gray code data than the corresponding binary source data. The digital-to-analog converter decodes the Gray code and generates corresponding gamma voltage levels for display use.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: June 7, 2016
    Assignee: Parade Technologies, Ltd.
    Inventors: Ta-Tao Hsu, Quan Yu, Yueh-Lin Yang
  • Patent number: 9209818
    Abstract: A system and method are disclosed for performing on die jitter tolerance testing. A set of clocks are generated based on an input signal. The set of clocks include in an in-phase signal based on the data switching edge of the input signal. Additionally, the set of clocks include an inverted clock phase shifted by 180 degrees, and a pair of clocks phase shifted positively and negatively by a certain number of degrees, ?. Data input is sampled based on the inverted clock and the two phase shifted clocks. The eye opening of the input signal can be determined based on whether each of the inverted clock and the two phase shifted clocks sample the correct data from the input signal at various ? values.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: December 8, 2015
    Assignee: Parade Technologies, Ltd.
    Inventors: Ming Qu, Yuanping Chen, Yuntao Zhu, Quan Yu, Kochung Lee
  • Patent number: 9202512
    Abstract: According to an embodiment of the present invention, a data storage device comprising a motor having a stator is disclosed. The stator may include a substrate having a first surface and a second surface opposite to the first surface; and a n-phase winding arrangement having n phase windings; wherein each phase winding comprises m flat fractional-pitch coils arranged on the first surface of the substrate such that the coils are spaced apart uniformly along a closed loop and connected in series; wherein each coil together with an angular section of the substrate between the coil and an adjacent coil of the same phase winding defines a stator pole-pair; and wherein m is an integer larger than 1.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: December 1, 2015
    Assignee: Marvell International LTD.
    Inventors: Chao Bi, Kui Cai, Kheong Sann Chan, Zhi Yong Ching, Moulay Rachid Elidrissi, Guchang Han, Zhimin He, Phyu Hla Nu, Jiang Feng Hu, Wei Hua, Quan Jiang, Siang Huei Leong, Wuzhong Lin, Bo Liu, Yansheng Ma, Chun Lian Ong, Jianzhong Shi, Cheng Su Soh, Sufui Sophia Tan, Li Wang, Chiew Leong Wong, Weiya Xi, Khai Leong Yong, Shengkai Yu, Yin Quan Yu, Zhimin Yuan, Jing Liang Zhang, Tiejun Zhou, Pantelis Alexopoulos, Budi Santoso, Qide Zhang, Kannan Sundaravadivelu, Ningyu Liu, Jianqiang Mou, Chong Wee Lee, Ke Gan, Boon Long Ibrahim See, Leonard Gonzaga, Wee Kiat Lim, Mengjun Liu, Venkataramanan Venkatakrishnan, Cheng Peng Tan
  • Publication number: 20150146322
    Abstract: According to an embodiment of the present invention, a data storage device comprising a motor having a stator is disclosed. The stator may include a substrate having a first surface and a second surface opposite to the first surface; and a n-phase winding arrangement having n phase windings; wherein each phase winding comprises m flat fractional-pitch coils arranged on the first surface of the substrate such that the coils are spaced apart uniformly along a closed loop and connected in series; wherein each coil together with an angular section of the substrate between the coil and an adjacent coil of the same phase winding defines a stator pole-pair; and wherein m is an integer larger than 1.
    Type: Application
    Filed: August 31, 2012
    Publication date: May 28, 2015
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Chao Bi, Kui Cai, Kheong Sann Chan, Zhi Yong Ching, Moulay Rachid Elidrissi, Guchang Han, Zhimin He, Phyu Hla Nu, Jiang Feng Hu, Wei Hua, Quan Jiang, Siang Huei Leong, Wuzhong Lin, Bo Liu, Yansheng Ma, Chun Lian Ong, Jianzhong Shi, Cheng Su Soh, Sufui Sophia Tan, Li Wang, Chiew Leong Wong, Weiya Xi, Khai Leong Yong, Shengkai Yu, Yin Quan Yu, Zhimin Yuan, Jing Liang Zhang, Tiejun Zhou, Pantelis Alexopoulos, Budi Santoso, Qide Zhang, Kannan Sundaravadivelu, Ningyu Liu, Jianqiang Mou, Chong Wee Lee, Ke Gan, Boon Long Ibrahim See, Leonard Gonzaga, Wee Kiat Lim, Mengjun Liu, Venkataramanan Venkatakrishnan, Cheng Peng Tan