Patents by Inventor Chunhua Li

Chunhua Li 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).

  • Treatment plan specific bite adjustment structures
    Patent number: 11141243
    Abstract: A series of appliances including a first shell and a second shell can be designed to incrementally implement a treatment plan. The first and second shells can have cavities designed to receive teeth of a jaw. A first number of bite adjustment structures can be formed of a same material as the first shell, extending therefrom and designed to interface with teeth of a second jaw. The first number of bite adjustment structures can have a first shape and location specific to a first stage of the treatment plan. A second number of bite adjustment structures can be formed of a same material as the second shell, extending therefrom and designed to interface with teeth of the second jaw. The second number of bite adjustment structures can have a second shape and location, different than the first shape and location, specific to a second stage of the treatment plan.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: October 12, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Rohit Tanugula, John Morton, Chunhua Li, Bastien Pesenti, Jihua Cheng, Jeeyoung Choi
  • Touch pen, driving method thereof and touch system
    Patent number: 11144138
    Abstract: A touch pen, a driving method thereof, and a touch system are provided. The touch pen includes: a capacitance circuit having different capacitance values when the touch pen is at different tilt angles; a detection circuit configured to detect a capacitance value of the capacitance circuit and generate capacitance information corresponding to the capacitance value; and a signal generating circuit configured to generate a corresponding driving signal according to the capacitance information.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: October 12, 2021
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chunhua Li, Meng Wang, Jie Ling, Xiangen Wang
  • Method for valuation of image dark data based on similarity hashing
    Patent number: 11138479
    Abstract: A method for valuation of image dark data based on similarity hashing, the method including: (1) acquiring a dark dataset, and inputting the dark dataset into a trained deep self-taught hashing algorithm model to obtain a hash code of each image in the dark dataset; (2) constructing a hash map according to the hash code of each image in the dark dataset obtained in (1), where the hash map includes a plurality of nodes, each node represents the hash code of each image; (3) acquiring a significance score of each node in the hash map obtained in (2); and (4) sorting significance scores of the plurality of nodes obtained in (3) in a descending order, and outputting images corresponding to top k significance scores of the plurality of nodes to users, where k is a natural number.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 5, 2021
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ke Zhou, Yu Liu, Yujuan Yang, Hua Wang, Chunhua Li, Yangtao Wang, Yifei Liu
  • Methods of forming patterned dental positioning appliances
    Patent number: 11103329
    Abstract: Embodiments are provided for forming a patterned dental positioning appliance. One method includes forming a virtual shell shaped to receive one or more teeth of a virtual model of a patient's dentition, and digitally applying a pattern on an inner surface within cavities of the virtual shell, where the pattern contacts at least a portion of the one or more teeth and modifies repositioning forces exerted on the one or more teeth. In some cases the pattern is a raised pattern, such as a raised mesh pattern. In forming the dental appliance, in some cases, the shell and the pattern are formed of the same material to form a unitary piece of the polymer material.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: August 31, 2021
    Assignee: Align Technology, Inc.
    Inventors: Chunhua Li, Yan Chen
  • TWO-STEP REACTIVE LIP SYSTEM
    Publication number: 20210251855
    Abstract: Disclosed is a two-step cosmetic product, such as used on the lips, where the basecoat includes a surface-stabilized dispersion of copolymer particles and a styrenic block copolymer, and the topcoat includes a silicone amine.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 19, 2021
    Applicant: L'ORÉAL
    Inventors: Jody EBANKS, Chunhua LI, Tsang-Min HUANG, Julien PORTAL
  • TWO-STEP REACTIVE LIP SYSTEM
    Publication number: 20210251877
    Abstract: Disclosed is a two-step cosmetic product, such as used on the lips, where the basecoat includes a surface-stabilized dispersion of copolymer particles, and the topcoat comprises a silicone amine and a viscous silicone, the viscous silicone having a viscosity of at least about 100,000 centistoke when measured at a concentration by weight of 100% and using a rotational viscometer at 25° C.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 19, 2021
    Applicant: L'ORÉAL
    Inventors: Jody EBANKS, Chunhua LI, Tsang-Min HUANG, Julien PORTAL
  • Electronic pen and inclined handwriting adjustment method thereof, inclined handwriting adjustment system, and adjustment method thereof
    Patent number: 11093050
    Abstract: An electronic pen and a tilt handwriting adjustment method thereof, a tilt handwriting adjustment system and an adjusting method thereof are provided. The electronic pen includes a pen body, a detector and a processor provided within the pen body. The detector is configured to detect a tilt angle of the pen body with respect to a writing plane, and output a corresponding detection parameter value; and the processor is configured to acquire the detection parameter value, and generate and output a driving signal according to the detection parameter value, and a characteristic parameter value of the driving signal corresponds to the tilt angle.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: August 17, 2021
    Assignees: Hefei BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Guanglei Yang, Zhixiang Fang, Jian He, Zhen Tang, Peng Ding, Meng Wang, Chunhua Li, Xuxu Hu
  • INTRAORAL APPLIANCES WITH PROXIMITY AND CONTACT SENSING
    Publication number: 20210244501
    Abstract: Detection of placement of dental aligners in patient mouth on teeth for indication of wearing compliance. Described herein are apparatuses and methods for detecting wearing, including compliance. In some variations these apparatuses and methods may include a sensor configured to detect deflection of the one or more deflectable structures. In some variations, these apparatuses and methods may include a proximity sensor coupled to the appliance shell and configured to generate sensor data when in proximity with intraoral tissue.
    Type: Application
    Filed: January 11, 2021
    Publication date: August 12, 2021
    Inventors: Yaser SHANJANI, Bruce CAM, Jun SATO, John Y. MORTON, Victor CHEN, Chunhua LI, Allen R. BORONKAY, Srinivas KAZA
  • DENTAL MATERIALS USING THERMOSET POLYMERS
    Publication number: 20210244503
    Abstract: Provided herein are crosslinked polymers useful in orthodontic appliances and light polymerizable liquid compositions and formulations useful for making crosslinked polymers. Also provided are methods of making an orthodontic appliance comprising a cross-linked polymer formed by a direct fabrication technique.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 12, 2021
    Inventors: Yan CHEN, Chunhua LI, Srinivas KAZA, Neil Brian CRAMER, Mary Catherine BERARD
  • DIRECT FABRICATION OF ORTHODONTIC APPLIANCES WITH 4D PRINTING
    Publication number: 20210220087
    Abstract: An appliance comprises a passive component and an active force generating component, in which the active force generating component is configured to react to a stimulus and generate tooth movement forces. In some embodiments, the passive component is configured to deflect when placed on one or more teeth and generate tooth movement forces, which are combined with tooth movement forces of the force generating component. In some embodiments, the passive component comprises a polymer which is less reactive to the stimulus than the force generating component. The force generating component can be configured to increase force to one or more teeth at an appropriate time.
    Type: Application
    Filed: January 21, 2021
    Publication date: July 22, 2021
    Applicant: ALIGN TECHNOLOGY, INC.
    Inventors: Avi KOPELMAN, Chunhua LI, Michael Christopher COLE, Blaine CARTER, Matthew DURBAN
  • MULTILAYER DENTAL APPLIANCES AND RELATED METHODS AND SYSTEMS
    Publication number: 20210212802
    Abstract: A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Inventors: Chunhua LI, Yan CHEN, Heinz PUDLEINER, Klaus MEYER, Joerg NICKEL, Craig PEHLERT
  • Palatal expander with skeletal anchorage devices
    Patent number: 11045283
    Abstract: A series of a palatal expanders increasing width can be used to gradually expand a patient's palate. Each palatal expander may have a palatal region flanked by teeth regions. The palatal region can have a plurality of anchor-receiving features (e.g., anchor interfaces) that allow the palatal expander to be attached to temporary anchorage device anchors that have been implanted into the patient's maxilla.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: June 29, 2021
    Assignee: Align Technology, Inc.
    Inventors: Jeremy Riley, Eric Kuo, Chunhua Li
  • METHOD OF FORMING A DENTAL APPLIANCE
    Publication number: 20210178654
    Abstract: The present disclosure includes dental appliances and methods of making and using such appliances. One method for forming a dental appliance includes forming a liquid thermoset polymer material into a semi-solid first shape, thermoforming the semi-solid first shape of thermoset polymer material onto a dentition mold, and curing the thermoset polymer on the dentition mold with a curative trigger to complete a molecular cross-linking reaction.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 17, 2021
    Inventors: Chunhua LI, Yan CHEN
  • Mascara compositions comprising a polymer having cyclic amide, cyclic amine and acrylamide functionality
    Patent number: 11033478
    Abstract: A mascara composition includes at least about 7 percent by weight of a non-ionic water-soluble or water dispersible copolymer that includes a cyclic amide monomer, a cyclic amine monomer, and an acrylamide monomer. Methods of applying makeup to the eyelashes are also provided.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: June 15, 2021
    Assignee: L'OREAL
    Inventors: XianZhi Zhou, Christopher Pang, Jody Ebanks, Chunhua Li
  • TOUCH PEN, DRIVING METHOD THEREOF AND TOUCH SYSTEM
    Publication number: 20210149504
    Abstract: A touch pen, a driving method thereof, and a touch system are provided. The touch pen includes: a capacitance circuit having different capacitance values when the touch pen is at different tilt angles; a detection circuit configured to detect a capacitance value of the capacitance circuit and generate capacitance information corresponding to the capacitance value; and a signal generating circuit configured to generate a corresponding driving signal according to the capacitance information.
    Type: Application
    Filed: April 14, 2020
    Publication date: May 20, 2021
    Applicants: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chunhua LI, Meng WANG, Jie LING, Xiangen WANG
  • DEVICES AND SYSTEMS FOR CREATION OF ATTACHMENTS FOR USE WITH DENTAL APPLIANCES AND CHANGEABLE SHAPED ATTACHMENTS
    Publication number: 20210128276
    Abstract: The present disclosure provides methods, devices, and systems for the creation of attachments for use with dental appliances and changeable shaped attachments. For instance, an attachment template tray for creating and placing attachments used in moving teeth of a patient can include an attachment template tray body having a first surface shaped to conform to the contours of exterior surfaces of teeth of a patient and including a portion of the first surface that provides a cavity to form the exterior surfaces of an attachment that is to be attached to the exterior surface of one of the teeth and an integrated light source, power source, and actuation mechanism on the body of the attachment template tray, wherein the power source provides power to the light source when the actuation mechanism is actuated.
    Type: Application
    Filed: December 18, 2020
    Publication date: May 6, 2021
    Inventors: Avi KOPELMAN, Chunhua LI
  • COMPOSITIONS FOR REMOVING NAIL POLISH
    Publication number: 20210121377
    Abstract: The invention relates to compositions for removing nail polish comprising at least at least about 10% by weight of at least one polyhydric alcohol compound, at least one low carbon alcohol, at least one high boiling point ester compound, at least one thickening agent, and at least one abrasive compound, as well as to methods of removing nail polish from nails using such compositions.
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Applicant: L'OREAL
    Inventors: Aline Aude GUIMONT, Chunhua LI, Hubert Tunchiao LAM, Derek James HENRY
  • Mascara compositions comprising a polymer having cyclic amide, cyclic amine and acrylamide functionality
    Patent number: 10987298
    Abstract: A mascara composition includes a vehicle comprising water; a primary film-forming polymer that is a non-ionic and water-soluble or water dispersible copolymer comprising a first cyclic amide monomer, a cyclic amine monomer, and an acrylamide monomer; at least one nonionic secondary film-forming polymer having a fraction of a second cyclic amide monomer that is at least about 70% by weight of the at least one secondary film-forming polymer; and from about 0.5% to about 8% by weight of a C2-C5 alcohol.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: April 27, 2021
    Assignee: L'OREAL
    Inventors: Christopher Pang, Chunhua Li, Jody Ebanks, XianZhi Zhou
  • Stylus and human-machine interactive apparatus
    Patent number: 10983612
    Abstract: The disclosure discloses a stylus and a human-machine interactive apparatus. The stylus includes: a body, including a refill, a housing and a clamping piece; wherein the refill can perform a lever deflection motion by taking the clamping piece as a pivot when it is under a pressure; a light emitter, fixed at an end portion of the refill and has a light emitting surface facing away from the refill; a light signal sensing element on a side of the end portion of the refill and configured to sense a light beam emitted by the light emitter and to output coordinate information of a position irradiated by the light beam; and a micro control unit configured to generate a corresponding drive signal according to the coordinate information output by the light signal sensing element and to send the drive signal to a touch screen via the refill.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 20, 2021
    Assignees: Hefei BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Chunhua Li, Guanglei Yang, Meng Wang, Zhixiang Fang, Xuxu Hu
  • Treatment plan specific bite adjustment structures
    Patent number: 10980616
    Abstract: A series of appliances including a first shell and a second shell can be designed to incrementally implement a treatment plan. The first and second shells can have cavities designed to receive teeth of a jaw. A first number of bite adjustment structures can be formed of a same material as the first shell and extend from the first cavities and be designed to interface with teeth of a second jaw. The first number of bite adjustment structures can have a first shape and location. A second number of bite adjustment structures can be formed of a same material as the second shell and extend from the second cavities and be designed to interface with teeth of the second jaw. The second number of bite adjustment structures can have a second shape and location, different than the first shape and location.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 20, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Rohit Tanugula, John Morton, Chunhua Li, Bastien Pesenti, Jihua Cheng, Jeeyoung Choi