Patents by Inventor Xuedong Liu

Xuedong Liu 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: 20170081343
    Abstract: The present invention relates to novel hydroxamic acids which are specific histone deacetylase (HDAC) inhibitors and/or TTK/Mps1 kinase inhibitors, including pharmaceutically acceptable salts thereof, which are useful for modulating HDAC and/or TTK/Mps1 kinase activity, pharmaceutical compositions comprising these compounds, and processes for their preparation.
    Type: Application
    Filed: May 14, 2015
    Publication date: March 23, 2017
    Applicant: The Regents of the University of Colorado, A Body Corporate
    Inventors: Xuedong Liu, Gan Zhang, Daniel Chuen-Fong Chan, Anthony D. Piscopio
  • Publication number: 20170027537
    Abstract: This disclosure relates to medical diagnostic high-frequency X-ray machines and power supply devices thereof. One power supply device can convert an alternating current into a direct current, which is further raised by a boost circuit and stored by a capacitor module, so that the power supply device can provide high voltage and sufficient power to an inverter. Another power supply device can use a lithium iron phosphate battery to power the X-ray machine. Accordingly, the X-ray machine can be lighter, smaller, resistant to high temperature, fast in electrical charging and discharging, and safer, and the usage life of the X-ray machine can be prolonged due to the long cycle life of the lithium iron phosphate battery.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 2, 2017
    Inventors: Wan ZHANG, Xuedong LIU
  • Publication number: 20170025241
    Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput and in flexibly varying observing conditions is proposed. The apparatus uses a movable collimating lens to flexibly vary the currents of the plural probe spots without influencing the intervals thereof, a new source-conversion unit to form the plural images of the single electron source and compensate off-axis aberrations of the plural probe spots with respect to observing conditions, and a pre-beamlet-forming means to reduce the strong Coulomb effect due to the primary-electron beam.
    Type: Application
    Filed: July 19, 2016
    Publication date: January 26, 2017
    Inventors: Shuai Li, Weiming Ren, Xuedong Liu, Juying Dou, Xuerang Hu, Zhongwei Chen
  • Publication number: 20170025243
    Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput is proposed. In the apparatus, a source-conversion unit forms plural and parallel images of one single electron source by deflecting plural beamlets of a parallel primary-electron beam therefrom, and one objective lens focuses the plural deflected beamlets onto a sample surface and forms plural probe spots thereon. A movable condenser lens is used to collimate the primary-electron beam and vary the currents of the plural probe spots, a pre-beamlet-forming means weakens the Coulomb effect of the primary-electron beam, and the source-conversion unit minimizes the sizes of the plural probe spots by minimizing and compensating the off-axis aberrations of the objective lens and condenser lens.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventors: Weiming Ren, Xuedong Liu, Xuerang Hu, Zhongwei Chen
  • Publication number: 20160336142
    Abstract: One modified source-conversion unit and one method to reduce the Coulomb Effect in a multi-beam apparatus are proposed. In the modified source-conversion unit, the aberration-compensation function is carried out after the image-forming function has changed each beamlet to be on-axis locally, and therefore avoids undesired aberrations due to the beamlet tilting/shifting. A Coulomb-effect-reduction means with plural Coulomb-effect-reduction openings is placed close to the single electron source of the apparatus and therefore the electrons not in use can be cut off as early as possible.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 17, 2016
    Inventors: Xuedong Liu, Weiming Ren, Shuai Li, Zhongwei Chen
  • Publication number: 20160328352
    Abstract: Methods and apparatus to identify a communication protocol being used in a process control system are disclosed. An example apparatus includes a process control device including a port to be in communication with a bus, the process control device to receive a first signal at the port and a second signal at the port, the process control device including a protocol detector to compare the first signal to reference communication protocols to identify the first signal as being associated with a first communication protocol, the protocol detector to compare the second signal to the reference communication protocols to identify the second signal as being associated with a second communication protocol, the first communication protocol being different than the second communication protocol, the processor to process the first signal based on the first communication protocol and the second signal based on the second communication protocol.
    Type: Application
    Filed: July 19, 2016
    Publication date: November 10, 2016
    Inventor: Xuedong Liu
  • Publication number: 20160284505
    Abstract: A multi-beam apparatus for observing a sample with oblique illumination is proposed. In the apparatus, a new source-conversion unit changes a single electron source into a slant virtual multi-source array, a primary projection imaging system projects the array to form plural probe spots on the sample with oblique illumination, and a condenser lens adjusts the currents of the plural probe spots. In the source-conversion unit, the image-forming means not only forms the slant virtual multi-source array, but also compensates the off-axis aberrations of the plurality of probe spots. The apparatus can provide dark-field images and/or bright-field images of the sample.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 29, 2016
    Inventors: Weiming Ren, Shuai Li, Xuedong Liu, Zhongwei Chen, Jack Jau
  • Publication number: 20160268096
    Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput is proposed. In the apparatus, a source-conversion unit changes a single electron source into a virtual multi-source array, a primary projection imaging system projects the array to form plural probe spots on the sample, and a condenser lens adjusts the currents of the plural probe spots. In the source-conversion unit, the image-forming means is on the upstream of the beamlet-limit means, and thereby generating less scattered electrons. The image-forming means not only forms the virtual multi-source array, but also compensates the off-axis aberrations of the plurality of probe spots.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Inventors: Weiming Ren, Shuai Li, Xuedong Liu, Zhongwei Chen
  • Patent number: 9431209
    Abstract: A new apparatus of plural charged particle beams with multi-axis magnetic lenses is provided, which comprises a plurality of sub-columns The apparatus employs two modified multi-axis magnetic lenses, and magnetic sub-lenses thereof therefore function as the objective lenses and the condenser lenses of all the sub-columns respectively. The plurality of sub-columns can perform the same function or different functions required for observing a surface of a specimen, such as high-throughput inspection and high-resolution review of interested features thereon. Accordingly, the apparatus can be used as a yield management tool in semiconductor manufacturing industry.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: August 30, 2016
    Assignee: HERMES-MICROVISION, INC.
    Inventors: Weiming Ren, Xuerang Hu, Xuedong Liu, Zhongwei Chen
  • Patent number: 9430429
    Abstract: Methods and apparatus to identify a communication protocol being used in a process control system are disclosed. An example method includes determining a message structure of a process control message received via a port, determining that the message structure corresponds to a first one of a plurality of process control message protocols, and processing the process control message according to the first process control message protocol.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: August 30, 2016
    Assignee: BRISTOL, INC.
    Inventor: Xuedong Liu
  • Patent number: 9422340
    Abstract: The present invention provides a novel macrocyclic compound of general Formula (I) having histone deacetylase (HDAC) inhibitory activity, a pharmaceutical composition comprising the compound, and a method useful to treat diseases using the compound.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: August 23, 2016
    Assignee: The Regents of the University of Colorado, A Body Corporate
    Inventors: Xuedong Liu, Andrew J. Phillips, Dana Ungermannova, Christopher G. Nasveschuk, Gan Zhang
  • Publication number: 20160084673
    Abstract: A small-footprint and low-power MVT system includes an explosion-proof housing, a high impedance piezo-resistive sensor contained within the housing for measuring at least one parameter of a fluid, an integrated battery storage unit, and an array of solar cells within the housing configured to collect ambient light and to recharge the battery storage unit.
    Type: Application
    Filed: September 22, 2015
    Publication date: March 24, 2016
    Applicant: NEWGATE INSTRUMENTS, LLC
    Inventors: Paul Mayer, Xuedong Liu
  • Publication number: 20160064180
    Abstract: A new apparatus of plural charged particle beams with multi-axis magnetic lenses is provided, which comprises a plurality of sub-columns The apparatus employs two modified multi-axis magnetic lenses, and magnetic sub-lenses thereof therefore function as the objective lenses and the condenser lenses of all the sub-columns respectively. The plurality of sub-columns can perform the same function or different functions required for observing a surface of a specimen, such as high-throughput inspection and high-resolution review of interested features thereon. Accordingly, the apparatus can be used as a yield management tool in semiconductor manufacturing industry.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 3, 2016
    Inventors: Weiming Ren, Xuerang Hu, Xuedong Liu, Zhongwei Chen
  • Patent number: 9202658
    Abstract: A multi-axis magnetic lens with stable performance in focusing a plurality of charged particle beams is provided. The multi-axis magnetic lens comprises a plurality of magnetic dub-lens modules. On the one hand, the multi-axis magnetic lens employs an annular permanent-magnet unit to provide a basic and stable magnetic flux to the plurality of magnetic sub-lens modules. One the other hand, the multi-axis magnetic lens uses a plurality of subsidiary coils to provide additional and adjustable magnetic flux to the plurality of magnetic sub-lens modules respectively. The invention also proposes a method to turn off or adjust the basic and stable magnetic flux for some applications. Hence, this invention will benefit the applications which need to execute in a long time period while keeping a high stabilization in performance.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: December 1, 2015
    Assignee: HERMES MICROVISION, INC.
    Inventors: Zhongwei Chen, Weiming Ren, Xuerang Hu, Xuedong Liu
  • Publication number: 20150272840
    Abstract: A color-changing composition for caring for and/or making up keratin materials is disclosed. The composition comprises: - a physiologically acceptable medium including at least an aqueous phase, - color-changing microcapsules, said microcapsules having a size ranging from 50 ?m to 1000 ?m, preferably from 80 ?m to 800 ?m, in particular from 100 ?m to 400 ?m, and comprising: (A) a core, having preferably a size ranging from 20 ?m to 800 ?m, comprising at least one colorant and preferably at least one binder, said colorant(s) including preferably at least one inorganic pigment preferably selected from iron oxide(s), and (B) a pressure-breakable wall layer surrounding said core, having preferably a thickness of 10 ?m to 300 ?m, comprising at least one colorant and preferably at least one binder, said colorant(s) including preferably at least titanium dioxide particles, Wherein said microcapsules includes at least 70% by weight of colorant(s), compared to the total weight of said microcapsules.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 1, 2015
    Applicant: L'OREAL
    Inventors: Xuedong Liu, Cyril Lemoine, Qing Yu
  • Patent number: 9105440
    Abstract: An apparatus of plural charged particle beams with multi-axis magnetic lens is provided to perform multi-functions of observing a specimen surface, such as high-throughput inspection and high-resolution review of interested features thereof and charge-up control for enhancing image contrast and image resolution. In the apparatus, two or more sub-columns are formed and each of the sub-columns performs one of the multi-functions. Basically the sub-columns take normal illumination to get high image resolutions, but one or more may take oblique illuminations to get high image contrasts.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: August 11, 2015
    Assignee: HERMES MICROVISION, INC.
    Inventors: Zhongwei Chen, Weiming Ren, Xuerang Hu, Xuedong Liu
  • Patent number: 9086442
    Abstract: Methods and apparatus to detect leakage current in a resistance temperature detector are disclosed. An example method includes providing a resistance temperature detector circuit with a first resistance circuit and a second resistance circuit, measuring a first voltage at the first resistance circuit in response to applying a first current to the first resistance circuit, measuring a second voltage at the second resistance in response to applying a second current to the second resistance circuit, comparing the first and second voltages to determine a difference value, and determining that a current leak exists in the resistance temperature detector circuit when the difference value is not within a first range.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: July 21, 2015
    Assignee: BRISTOL, INC.
    Inventors: Paul Gerard Mayer, Jeffrey Barry McGaughey, Xuedong Liu
  • Publication number: 20150179384
    Abstract: A multi-axis magnetic lens with stable performance in focusing a plurality of charged particle beams is provided. The multi-axis magnetic lens comprises a plurality of magnetic dub-lens modules. On the one hand, the multi-axis magnetic lens employs an annular permanent-magnet unit to provide a basic and stable magnetic flux to the plurality of magnetic sub-lens modules. One the other hand, the multi-axis magnetic lens uses a plurality of subsidiary coils to provide additional and adjustable magnetic flux to the plurality of magnetic sub-lens modules respectively. The invention also proposes a method to turn off or adjust the basic and stable magnetic flux for some applications. Hence, this invention will benefit the applications which need to execute in a long time period while keeping a high stabilization in performance.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 25, 2015
    Inventors: Zhongwei Chen, Weiming Ren, Xuerang Hu, Xuedong Liu
  • Publication number: 20150060662
    Abstract: An apparatus of plural charged particle beams with multi-axis magnetic lens is provided to perform multi-functions of observing a specimen surface, such as high-throughput inspection and high-resolution review of interested features thereof and charge-up control for enhancing image contrast and image resolution. In the apparatus, two or more sub-columns are formed and each of the sub-columns performs one of the multi-functions. Basically the sub-columns take normal illumination to get high image resolutions, but one or more may take oblique illuminations to get high image contrasts.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Zhongwei Chen, Weiming Ren, Xuerang Hu, Xuedong Liu
  • Publication number: 20150010541
    Abstract: The present invention provides a novel macrocyclic compound of general Formula (I) having histone deacetylase (HDAC) inhibitory activity, a pharmaceutical composition comprising the compound, and a method useful to treat diseases using the compound.
    Type: Application
    Filed: May 29, 2014
    Publication date: January 8, 2015
    Applicant: The Regents of the University of Colorado, A Body Corporate
    Inventors: Xuedong Liu, Andrew J. Phillips, Dana Ungermannova, Christopher G. Nasveschuk, Gan Zhang