Patents by Inventor J. Yuan

J. Yuan 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: 20250023644
    Abstract: Systems may include a broadband light source device, which may include at least one processor programmed or configured to receive an electrical control signal for operating a component of a plurality of components of a spectrum control device of the broadband light source device, determine which component of the plurality of components of the spectrum control device to operate based on the electrical control signal, and operate a first component of the plurality of components of the spectrum control device based on determining to operate the first component. Methods and computer program products are also disclosed.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 16, 2025
    Inventors: Qingyu Li, Oliver Lu, Haiji J. Yuan, Yajun Wang, Michael J.L. Cahill, Ian Peter Mcclean, Glenn D. Bartolini
  • Patent number: 11906823
    Abstract: A reconfigurable polarization rotator is formed of an array of very small liquid crystal (LC) cells (e.g., cells of less than 10 ?m in width, termed “microcells”), referred to hereinafter as “microcells”. Each LC microcell is addressable by a separate electrical voltage input that independently controls the polarization rotation performed by the associated LC microcell. By defining a set of adjacent microcells to be held at the same voltage level, that group may be used to form a polarization rotator window of a proper size for a first fiber array configuration. When a fiber array of a different configuration (say, an array with twice the pitch) is used, a different-sized group of adjacent LC microcells is held at a common voltage level so as to form a reconfigured “window” of a new dimension.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: February 20, 2024
    Assignee: II-VI Delaware, Inc.
    Inventors: Guomin Jiang, Helen Chen, Haiji J. Yuan, Lixin Wang, WenYi Cao, Xuewen Lu, Qingyu Li, Yimin Ji
  • Patent number: 11789331
    Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: October 17, 2023
    Inventors: Qingyu Li, Jack R. Kelly, Guomin Jiang, Haiji J. Yuan, Yimin Ji, Helen Chen
  • Publication number: 20220357630
    Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.
    Type: Application
    Filed: June 23, 2022
    Publication date: November 10, 2022
    Applicant: II-VI Delaware, Inc.
    Inventors: Qingyu Li, Jack R. Kelly, Guomin Jiang, Haiji J. Yuan, Yimin Ji, Helen Chen
  • Publication number: 20220334416
    Abstract: A reconfigurable polarization rotator is formed of an array of very small liquid crystal (LC) cells (e.g., cells of less than 10 ?m in width, termed “microcells”), referred to hereinafter as “microcells”. Each LC microcell is addressable by a separate electrical voltage input that independently controls the polarization rotation performed by the associated LC microcell. By defining a set of adjacent microcells to be held at the same voltage level, that group may be used to form a polarization rotator window of a proper size for a first fiber array configuration. When a fiber array of a different configuration (say, an array with twice the pitch) is used, a different-sized group of adjacent LC microcells is held at a common voltage level so as to form a reconfigured “window” of a new dimension.
    Type: Application
    Filed: April 20, 2021
    Publication date: October 20, 2022
    Applicant: II-VI Delaware, Inc.
    Inventors: Guomin Jiang, Helen Chen, Haiji J. Yuan, Lixin Wang, WenYi Cao, Xuewen Lu, Qingyu Li, Yimin Ji
  • Patent number: 11422429
    Abstract: A voltage-controlled optical wedge is formed by creating an adjustable voltage gradient along the length of a relatively large-sized LC cell. A pair of bias voltages (AC voltages) are applied at the opposing side terminations of the LC cell, their RMS values selected to create a continuous phase variation along the length of the cell, where a defined phase variation is associated with a specific beam steering angle. Adjustments in the applied bias voltages (specifically, changes in the RMS values of the bias voltages) result in changing the beam steering angle, providing for active, controllable beam steering as a function of time. The LC cell may be configured to provide either a linear or nonlinear continuous phase variation, as preferred for different beam steering applications.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: August 23, 2022
    Assignee: II-VI Delaware, Inc.
    Inventors: Qingyu Li, Jack R. Kelly, Guomin Jiang, Haiji J. Yuan, Yimin Ji, Helen Chen
  • Patent number: 11016441
    Abstract: A two-step optimization process is utilized to define an optimal phase profile for a LCoS spatial light modulator. The two-step optimization process first utilizes a nonlinear constrained optimization (NCO) program to determine the specific parameters required to obtain an optimal phase profile (hologram), where the “optimal phase profile” is typically defined as that profile which achieves maximum diffraction efficiency for optical switching. Following this first step, phase scaling (and perhaps an adjustment in the number of pixels per period) is employed to slightly modify the values of the optimal phase profile to effectively suppress crosstalk peaks. If any orders still exhibit an unacceptable level of crosstalk, these orders are then subtracted from the phase profile to create the final design.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: May 25, 2021
    Assignee: II-VI Delaware, Inc.
    Inventors: Kun Gao, Jack R. Kelly, Helen Chen, Guomin Jiang, Xinran Wang, Lixin (Lawrence) Wang, Qingyu (Tom) Li, Haiji J. Yuan
  • Publication number: 20200264558
    Abstract: A two-step optimization process is utilized to define an optimal phase profile for a LCoS spatial light modulator. The two-step optimization process first utilizes a nonlinear constrained optimization (NCO) program to determine the specific parameters required to obtain an optimal phase profile (hologram), where the “optimal phase profile” is typically defined as that profile which achieves maximum diffraction efficiency for optical switching. Following this first step, phase scaling (and perhaps an adjustment in the number of pixels per period) is employed to slightly modify the values of the optimal phase profile to effectively suppress crosstalk peaks. If any orders still exhibit an unacceptable level of crosstalk, these orders are then subtracted from the phase profile to create the final design.
    Type: Application
    Filed: February 18, 2019
    Publication date: August 20, 2020
    Applicant: II-VI Delaware, Inc.
    Inventors: Kun Gao, Jack R. Kelly, Helen Chen, Guomin Jiang, Xinran Wang, Lixin (Lawrence) Wang, Qingyu (Tom) Li, Haiji J. Yuan
  • Patent number: 9737643
    Abstract: Methods of reducing device drag on implantable articles are disclosed herein. The methods include coating the contact surfaces of implantable articles with bioabsorbable lubricating coatings.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: August 22, 2017
    Assignee: DEPUY MITEK, LLC
    Inventors: Mark B. Roller, Kevin L. Cooper, Jo Hays, Jenny J. Yuan, Joseph H. Contiliano
  • Patent number: 9258790
    Abstract: The present invention provides a dynamic power spectrum management method, a spectrum optimization system, and a client device, which can improve spectrum management. The method includes: calculating, from a tax factor containing user crosstalk information, a water-filling parameter corresponding to the case that total power of each user is below or equal to a threshold of total power of the user; calculating, from the water-filling parameter, power allocated to each user in each sub-carrier until convergence is attained for all users. Correspondingly, the present invention further provides a spectrum optimization system and a client device. In effect, the present invention can improve the spectrum management.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: February 9, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: W Yu, J Yuan, Liming Fang
  • Publication number: 20150005770
    Abstract: Methods of reducing device drag on implantable articles are disclosed herein. The methods include coating the contact surfaces of implantable articles with bioabsorbable lubricating coatings.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 1, 2015
    Inventors: Mark B. Roller, Kevin L. Cooper, Jo Hays, Jenny J. Yuan, Joseph H. Contiliano
  • Patent number: 8840613
    Abstract: Methods of reducing device drag on implantable articles are disclosed herein. The methods include coating the contact surfaces of implantable articles with bioabsorbable lubricating coatings.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: September 23, 2014
    Assignee: DePuy Mitek, LLC
    Inventors: Mark B. Roller, Joseph H. Contiliano, Kevin L. Cooper, Jo Hays, Jenny J. Yuan
  • Publication number: 20120226280
    Abstract: Methods of reducing device drag on implantable articles are disclosed herein. The methods include coating the contact surfaces of implantable articles with bioabsorbable lubricating coatings.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Applicant: DEPUY MITEK, INC.
    Inventors: Mark B. Roller, Joseph H. Contiliano, Kevin L. Cooper, Jo Hays, Jenny J. Yuan
  • Patent number: 8197480
    Abstract: Bioabsorbable coatings for bioabsorbable implantable medical devices having dragging or engagement surfaces. The coatings on a surface of the devices reduce device drag.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: June 12, 2012
    Assignee: DePuy Mitek, Inc.
    Inventors: Mark B. Roller, Joseph Contiliano, Kevin L. Cooper, Jo Hays, Jenny J. Yuan
  • Patent number: 7964573
    Abstract: The present invention relates to compositions related to a polynucleotide encoding a transient receptor potential channel gene. Also disclosed is the use of this polynucleotide, its homologs, fragments, variants and its resultant polypeptides in the diagnosis, prevention and treatment of disease, particularly idiopathic pulmonary arterial hypertension (IPAH). This invention also teaches the use of these polynucleotides and polypeptides as assays for drug discovery and therapies.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: June 21, 2011
    Assignee: The Regents of the University of California
    Inventors: Carmelle Remillard, Lewis J. Rubin, Ying Yu, Jason X.-J. Yuan
  • Publication number: 20100185199
    Abstract: Bioabsorbable coatings for bioabsorbable implantable medical devices having dragging or engagement surfaces. The coatings on a surface of the devices reduce device drag.
    Type: Application
    Filed: March 29, 2010
    Publication date: July 22, 2010
    Applicant: DEPUY MITEK, INC.
    Inventors: Mark B. Roller, Joseph H. Contiliano, Kevin L. Cooper, Jo Hays, Jenny J. Yuan
  • Patent number: 7713272
    Abstract: Bioabsorbable coatings for bioabsorbable implantable medical devices having dragging or engagement surfaces. The coatings on a surface of the devices reduce device drag.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: May 11, 2010
    Assignee: Ethicon, Inc.
    Inventors: Mark B. Roller, Joseph H. Contiliano, Kevin L. Cooper, Jo Hays, Jenny J. Yuan
  • Patent number: 7572298
    Abstract: An implantable medical device is disclosed. The device is fabricated at least in part from a biocompatible, biodegradable composition. The composition is composed of a biocompatible, biodegradable polymer and a biocompatible, biodegradable wax. The concentration of the wax at the surface of the device is greater than the concentration of the wax in the body of the implantable device. The increased concentration of wax at the device surface may be attained when the device is heated to a temperature greater than the melting point of the wax and the glass transition temperature of the polymer, but lower than melting point of the polymer.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: August 11, 2009
    Assignee: Ethicon, Inc.
    Inventors: Mark B. Roller, Yufu Li, Jenny J. Yuan
  • Publication number: 20080123776
    Abstract: The present invention provides a dynamic power spectrum management method, a spectrum optimization system, and a client device, which can improve spectrum management. The method includes: calculating, from a tax factor containing user crosstalk information, a water-filling parameter corresponding to the case that total power of each user is below or equal to a threshold of total power of the user; calculating, from the water-filling parameter, power allocated to each user in each sub-carrier until convergence is attained for all users. Correspondingly, the present invention further provides a spectrum optimization system and a client device. In effect, the present invention can improve the spectrum management.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 29, 2008
    Inventors: W. YU, J. YUAN, Liming FANG
  • Publication number: 20070093895
    Abstract: A method of replacing an ACL with a graft. The method provides for the drilling bone tunnels in a femur and a tibia. A replacement graft is provided having first and second ends. A biodegradable composite screw is provided. The screw is made from a biodegradable polymer and a bioceramic or a bioglass. At least one end of the graft is secured in a bone tunnel using the biodegradable composite screw.
    Type: Application
    Filed: November 27, 2006
    Publication date: April 26, 2007
    Inventors: Lisa Donnelly, Yufu Li, Joan Sullivan, Gregory Whittaker, J. Yuan