Patents by Inventor Yu Qi

Yu Qi 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: 20230155502
    Abstract: A multilevel self-balance control circuit can include: a voltage divider unit configured to receive and divide an input voltage; a voltage-controlled charge source load coupled to an output terminal of the voltage divider unit, and being configured to adaptively adjust charge amount input to the voltage-controlled charge source load based on an output voltage of the voltage divider unit, such that a total amount of charges flowing through the voltage-controlled charge source load during a period of each working state of the voltage divider unit is positively correlated with the output voltage of the voltage divider unit, thereby forming a negative feedback loop to achieve voltage balancing of the voltage divider unit; and a control unit configured to generate control signals for the voltage divider unit and the voltage-controlled charge source load, thereby coordinately controlling the voltage divider unit and the voltage-controlled charge source load.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 18, 2023
    Inventors: Yu Qi, Wei Chen
  • Publication number: 20230125514
    Abstract: A cascade circuit can include: N power conversion units connected in series between two ports of a power supply, where N is a positive integer greater than or equal to 2; a controller connected to one of the N power conversion units, and being configured to send a signal to be transmitted through the connected power conversion unit; where each of the power conversion units is configured to send the signal to be transmitted to a next-stage power conversion unit when the each of the power conversion unit shares a reference voltage with the adjacent next-stage power conversion unit; and where the signal to be transmitted is controlled to be transmitted from a previous-stage power conversion unit to a next-stage power conversion unit in sequence until the signal to be transmitted is received by all of the N power conversion units.
    Type: Application
    Filed: October 19, 2022
    Publication date: April 27, 2023
    Inventors: Yu Qi, Wei Chen, Chen Zhao
  • Patent number: 11631592
    Abstract: In a method, a mask is formed on a microstructure over a substrate. The mask includes a first pattern over a first region of the microstructure and a second pattern over a second region of the microstructure. A first etching process is performed to etch the microstructure by providing an etching gas and applying a first bias voltage to the substrate according to the first and second patterns of the mask. A protective layer is subsequently formed by providing a deposition gas and applying a second bias voltage to the substrate to cover the first pattern of the mask. A second etching process is performed to transfer the second pattern of the mask further into the second region of the microstructure. The deposition gas has a higher carbon to fluorine ratio than the etching gas, and the second bias voltage is smaller than the first bias voltage.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: April 18, 2023
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Yu Qi Wang, Wenjie Zhang, Hong Guang Song, Lipeng Liu, Lianjuan Ren
  • Publication number: 20220403137
    Abstract: Fluorescent magenta latexes are provided which may comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent magenta latex has a weight ratio of the Solvent Red 49 to the Solvent Yellow 98 in a range of from 3:1 to 10:1. Fluorescent magenta toners and methods of making and using the fluorescent magenta toners are also provided.
    Type: Application
    Filed: August 18, 2022
    Publication date: December 22, 2022
    Inventors: Chunliang Lu, Peter V Nguyen, Yu Qi
  • Publication number: 20220403138
    Abstract: Fluorescent orange latexes are provided which comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent orange latex has a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1. Fluorescent orange toners and methods of making and using the fluorescent orange toners are also provided.
    Type: Application
    Filed: August 18, 2022
    Publication date: December 22, 2022
    Inventors: Chunliang Lu, Peter V. Nguyen, Yu Qi
  • Patent number: 11523799
    Abstract: An ultrasound fetal imaging system uses an acceleration sensor (16) for generating an acceleration signal relating to movement of the ultrasound transducer (10). A user is guided in how or where to move the ultrasound transducer based on the results of image processing of the ultrasound images. The user can thus be guided to move the transducer in a certain direction so as to achieve a complete scan of a fetus in a shortest possible time. This limits exposure of the expectant mother to the ultrasound energy. The fetal image obtained may be used to determine a fetal weight, for example using regression analysis based on some of the parameters derived from the obtained image.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 13, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Yu Qi, Jian Gang Chen, Lin Li
  • Patent number: 11453759
    Abstract: Fluorescent magenta latexes are provided which may comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent magenta latex has a weight ratio of the Solvent Red 49 to the Solvent Yellow 98 in a range of from 3:1 to 10:1. Fluorescent magenta toners and methods of making and using the fluorescent magenta toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: September 27, 2022
    Assignee: Xerox Corporation
    Inventors: Chunliang Lu, Peter V. Nguyen, Yu Qi
  • Patent number: 11453760
    Abstract: Fluorescent orange latexes are provided which comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent orange latex has a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1. Fluorescent orange toners and methods of making and using the fluorescent orange toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: September 27, 2022
    Assignee: Xerox Corporation
    Inventors: Chunliang Lu, Peter V. Nguyen, Yu Qi
  • Publication number: 20220294525
    Abstract: Provided are a method for sharing a radio spectrum with high-orbit communication satellites, which comprise a geosynchronous satellite and operate in a near-equatorial orbit, on the basis of a beam constant offset, and a low-orbit communication satellite system.
    Type: Application
    Filed: June 30, 2020
    Publication date: September 15, 2022
    Applicant: CHINA ACADEMY OF SPACE TECHNOLOGY
    Inventors: Feng LI, Fenglong HOU, Yu QI, Xiaoxiong LIN, Shengwei PEI, Dong CHEN, Xingang LI, Zeyu BAO
  • Publication number: 20220175626
    Abstract: A temporary hair coloring composition or gloss composition including a core-shell toner particle; wherein the core comprises an optional dye, an optional pigment, an optional additive; and a polymer binder; wherein the shell comprises a shell polymer and an optional additive; and a vehicle comprising a liquid, a paste, or a semi-solid; wherein the vehicle is non-toxic and does not harm hair.
    Type: Application
    Filed: December 8, 2020
    Publication date: June 9, 2022
    Inventors: Yu Qi, Judith Millner Vandewinckel, Eliud Robles Flores
  • Publication number: 20220178742
    Abstract: A sun exposure sensor for disposable or single use including a substrate having an upper surface and a lower surface; a sun exposure sensing portion disposed on the upper surface of the substrate, the sun exposure sensing portion comprising a fluorescent toner image, wherein the fluorescent toner image increasingly fades upon exposure to sunlight; a sun exposure scale disposed on the upper surface of the substrate, the sun exposure scale comprising an evaluation image for evaluating an amount of fading of the fluorescent toner image; an optional coating layer disposed over all or a portion of the upper surface of the substrate; an optional backing layer disposed over all or a portion of the lower surface of the substrate. A process for preparing the sensor using xerographic toner printing.
    Type: Application
    Filed: December 8, 2020
    Publication date: June 9, 2022
    Inventors: Yu Qi, Eliud Robles Flores, Judith Millner Vandewinckel, Andrew Beams
  • Publication number: 20220135813
    Abstract: Disclosed is a washable non-toxic body paint including core/shell toner particles having a size of from 4.0 ?m to 30 ?m, wherein the core comprises a colorant and the shell comprises a polyester resin. The body paint includes an alcohol-free medium of gelatin or glycerin. The body paint can be applied to a skin surface.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 5, 2022
    Inventors: Judith Millner Vandewinckel, Eliud Robles Flores, Yu Qi
  • Publication number: 20220106735
    Abstract: According to various embodiments, a method of forming an image on a fabric and the resulting fabric is disclosed. The method includes providing a printable media including a carrier layer having a first surface comprising a first area and a second surface opposite the first surface. The method includes providing a fabric layer having a third surface and a fourth surface opposite the third surface, the third surface includes a second area. The fabric layer is secured to the carrier layer by the adhesive bonding a first portion of the fourth surface to the first surface. The method includes applying a toner to a first portion of the third surface of the fabric layer. The toner includes antimicrobial nanoparticles on an outer surface of the toner. The method includes fusing the toner to the first portion of the third surface of the fabric layer.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 7, 2022
    Inventors: Eliud Robles Flores, Yu Qi, Judith Millner Vandewinckel
  • Publication number: 20220100112
    Abstract: Methods of making phosphorescent toner are provided. In an embodiment, such a method comprises forming a phosphorescent pigment emulsion comprising a phosphorescent pigment and a surfactant; homogenizing a mixture comprising a resin emulsion comprising a resin and the phosphorescent pigment emulsion; aggregating the mixture to form toner particles comprising the phosphorescent pigment embedded within and surrounded by the resin; and coalescing the toner particles to form a phosphorescent toner comprising the toner particles. The phosphorescent toners are also provided.
    Type: Application
    Filed: September 29, 2020
    Publication date: March 31, 2022
    Inventors: Alexander Knowles, Yu Qi
  • Patent number: 11209741
    Abstract: Fluorescent green toners are provided. In embodiments, a fluorescent green toner comprises fluorescent agent-incorporated resin particles comprising a resin, a fluorescence brightener, and a yellow fluorescent agent having an absorption spectrum that overlaps with a fluorescence emission spectrum of the fluorescence brightener; and a cyan colorant; blue dye-incorporated resin particles comprising the resin and a blue dye; or both. The fluorescent green toner has a weight ratio of the yellow fluorescent agent to the cyan colorant and, if present, the blue dye, in a range of from 100:1 to 0.2:1, and the fluorescent green toner exhibits Förster Resonance Energy Transfer (FRET) under illumination with UV light. Methods of making and using the fluorescent green toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 28, 2021
    Assignee: Xerox Corporation
    Inventors: Chunliang Lu, Yu Qi, Peter V. Nguyen, Eliud Robles-Flores, Chieh-Min Cheng
  • Patent number: 11204562
    Abstract: Methods of making fluorescent pink toners are provided which comprise forming one or more fluorescent latexes which comprise a red fluorescent agent, a yellow fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent pink toner. Fluorescent pink toners and methods of using such toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 21, 2021
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Judith Vandewinckel, Chunliang Lu, Eliud Robles-Flores, Fan Shi
  • Patent number: 11199786
    Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 14, 2021
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Judith Vandewinckel, Shigeng Li, Chunliang Lu, Chieh-Min Cheng
  • Patent number: 11199787
    Abstract: Methods of making fluorescent metallic toners are provided which comprise forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising aluminum flakes and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent metallic toner. Fluorescent metallic toners and methods of using such toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 14, 2021
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Jaclyn Janis, Judith Vandewinckel, Chunliang Lu
  • Publication number: 20210294232
    Abstract: Fluorescent magenta latexes are provided which may comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent magenta latex has a weight ratio of the Solvent Red 49 to the Solvent Yellow 98 in a range of from 3:1 to 10:1. Fluorescent magenta toners and methods of making and using the fluorescent magenta toners are also provided.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 23, 2021
    Inventors: Chunliang Lu, Peter V. Nguyen, Yu Qi
  • Publication number: 20210294234
    Abstract: Fluorescent orange latexes are provided which comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent orange latex has a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1. Fluorescent orange toners and methods of making and using the fluorescent orange toners are also provided.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 23, 2021
    Inventors: Chunliang Lu, Peter V. Nguyen, Yu Qi