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).

  • Cosmetic compositions containing acrylic thickener
    Patent number: 10980733
    Abstract: The invention relates to a composition, especially a cosmetic composition, comprising at least one acrylic thickener and at least one oil, as well as to methods of using such compositions.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 20, 2021
    Assignee: L'OREAL
    Inventors: Chunhua Li, Hy Si Bui, Dhaval Patel, Mohamed Kanji, Geoffrey White
  • Multilayer dental appliances and related methods and systems
    Patent number: 10973613
    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: Grant
    Filed: March 31, 2017
    Date of Patent: April 13, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Chunhua Li, Yan Chen, Heinz Pudleiner, Klaus Meyer, Joerg Nickel, Craig Pehlert
  • Direct fabrication of aligners for palate expansion and other applications
    Patent number: 10959810
    Abstract: Systems, methods, and devices for producing appliances for expansion of the palate of a patient are provided. A palate expanding orthodontic appliance comprises a teeth engagement portion comprising a plurality of teeth engagement structures and a force generating portion coupled to the teeth engagement portion and configured to apply force to cause the patient's palate to expand. The orthodontic appliances can be designed according to the specifications provided herein and manufactured using direct fabrication methods.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: March 30, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Chunhua Li, Avi Kopelman, Srinivas Kaza, Ryan Kimura, Yaser Shanjani
  • Curable composition for use in a high temperature lithography-based photopolymerization process and method of producing crosslinked polymers therefrom
    Patent number: 10954334
    Abstract: Provided herein are curable compositions for use in a high temperature lithography-based photopolymerization process, a method of producing crosslinked polymers using said curable compositions, crosslinked polymers thus produced, and orthodontic appliances comprising the crosslinked polymers.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: March 23, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Robert Liska, Christian Gorsche, György Harakaly, Markus Kury, Jürgen Stampfl, Peter Dorfinger, Yan Chen, Chunhua Li, Srinivas Kaza
  • TACTILE OBJECTS FOR ORTHODONTICS, SYSTEMS AND METHODS
    Publication number: 20210068925
    Abstract: Methods, systems, and apparatus's for improving orthodontic treatments. In an embodiment, an orthodontic system including a tactile object is provided for modulating an engagement between a tooth attachment and an orthodontic appliance.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 11, 2021
    Inventors: Chunhua LI, Jennifer Chen, John Morton, Jon Moss, Clark Kaufhardt, Heng Cao
  • Dental materials using thermoset polymers
    Patent number: 10925692
    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: Grant
    Filed: August 31, 2020
    Date of Patent: February 23, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Yan Chen, Chunhua Li, Srinivas Kaza, Neil Brian Cramer, Mary Catherine Berard
  • Dental materials using thermoset polymers
    Patent number: 10925693
    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: Grant
    Filed: August 31, 2020
    Date of Patent: February 23, 2021
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Yan Chen, Chunhua Li, Srinivas Kaza, Neil Brian Cramer, Mary Catherine Berard
  • TACTILE OBJECTS FOR ORTHODONTICS, SYSTEMS AND METHODS
    Publication number: 20210045846
    Abstract: Methods, systems, and apparatus's for improving orthodontic treatments. In an embodiment, an orthodontic system including a tactile object is provided for modulating an engagement between a tooth attachment and an orthodontic appliance.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Inventors: Chunhua LI, Jennifer Chen, John Morton, Jon Moss, Clark Kaufhardt, Heng Cao
  • Method of forming a dental appliance
    Patent number: 10919209
    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: Grant
    Filed: May 25, 2018
    Date of Patent: February 16, 2021
    Assignee: Align Technology, Inc.
    Inventors: Chunhua Li, Yan Chen
  • LIP COMPOSITIONS CAPABLE OF FORMING A MULTILAYER STRUCTURE AFTER APPLICATION TO LIPS
    Publication number: 20210038495
    Abstract: Lip compositions including at least one semi-crystalline acrylate copolymer, wherein the compositions include at least two components prior to mixing and application to lips and are capable of forming a multilayer structure after application to lips, are provided.
    Type: Application
    Filed: October 29, 2020
    Publication date: February 11, 2021
    Applicant: L'OREAL
    Inventors: XianZhi ZHOU, Tsang-Min HUANG, Jody EBANKS, Mariko HASEBE, Hy Si BUI, Chunhua LI, Rita Jaky EL-KHOURI, Rabia AHMAD
  • Compositions for removing nail polish
    Patent number: 10912724
    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: Grant
    Filed: August 30, 2018
    Date of Patent: February 9, 2021
    Assignee: L'OREAL
    Inventors: Aline Aude Guimont, Chunhua Li, Hubert Tunchiao Lam, Derek James Henry
  • Intraoral appliances with proximity and contact sensing
    Patent number: 10888396
    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: Grant
    Filed: November 11, 2019
    Date of Patent: January 12, 2021
    Assignee: Align Technology, Inc.
    Inventors: Yaser Shanjani, Bruce Cam, Jun Sato, John Y. Morton, Victor Chen, Chunhua Li, Allen R. Boronkay, Srinivas Kaza
  • POLYMERIZABLE MONOMERS AND METHOD OF POLYMERIZING THE SAME
    Publication number: 20210002396
    Abstract: Provided herein are photopolymerizable monomers, optionally for use as reactive diluents in a high temperature lithography-based photopolymerization process, a method of producing polymers using said photopolymerizable monomers, the polymers thus produced, and orthodontic appliances comprising the polymers.
    Type: Application
    Filed: September 21, 2020
    Publication date: January 7, 2021
    Inventors: Robert LISKA, Christian GORSCHE, Markus KURY, Yan CHEN, Chunhua LI, Srinivas KAZA
  • METHOD FOR VALUATION OF IMAGE DARK DATA BASED ON SIMILARITY HASHING
    Publication number: 20200410304
    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: Application
    Filed: July 30, 2019
    Publication date: December 31, 2020
    Inventors: Ke ZHOU, Yu LIU, Yujuan YANG, Hua WANG, Chunhua LI, Yangtao WANG, Yifei LIU
  • DENTAL MATERIALS USING THERMOSET POLYMERS
    Publication number: 20200397538
    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: August 31, 2020
    Publication date: December 24, 2020
    Inventors: Yan Chen, Chunhua Li, Srinivas Kaza, Neil Brian Cramer, Mary Catherine Berard
  • DENTAL MATERIALS USING THERMOSET POLYMERS
    Publication number: 20200397539
    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: August 31, 2020
    Publication date: December 24, 2020
    Inventors: Yan CHEN, Chunhua LI, Srinivas KAZA, Neil Brian CRAMER, Mary Catherine BERARD
  • Compositions comprising glycerin, monoalcohol and a diester
    Patent number: 10869820
    Abstract: The invention relates to compositions for removing nail polish including at least about 20% by weight of a C2-C3 monoalcohol, at least about 10% by weight of glycerin, and a diester of a dicarboxylic acid. The compositions optionally include water. The water, if present, is present in a concentration by weight that is less than the concentration by weight of glycerin. If the concentration of glycerin is from 30% to 60% by weight, then the concentration of C2-C3 monoalcohol is at least about 30% by weight.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: December 22, 2020
    Assignee: L'OREAL
    Inventors: Aline Aude Guimont, Chunhua Li
  • Multi-layer film with improved modulus properties
    Patent number: 10864708
    Abstract: The invention relates to a multi-layer, preferably co-extruded, plastic film with improved modulus properties, which is suitable, in particular, for producing three-dimensionally shaped articles.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: December 15, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Heinz Pudleiner, Klaus Meyer, Juergen Winkler, Wolfgang Braeuer, Joerg Nickel, Craig Pehlert, Chunhua Li, Yan Chen
  • Treatment plan specific bite adjustment structures
    Patent number: 10856956
    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: December 8, 2020
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventors: Rohit Tanugula, John Morton, Chunhua Li, Bastien Pesenti, Jihua Cheng, Jeeyoung Choi
  • Mascara compositions including vinylpyrrolidone homopolymer and inorganic particulate
    Patent number: 10835476
    Abstract: A mascara composition including a film-forming polymer portion and a particulate portion is provided. The film-forming polymer portion comprises a high molecular weight vinylpyrrolidone homopolymer and the particulate portion comprises an inorganic particulate. The mascara composition comprises at least about ten percent by weight of the vinylpyrrolidone homopolymer and is substantially free of wax. Methods of applying makeup to the eyelashes are also provided.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 17, 2020
    Assignee: L'OREAL
    Inventors: Christopher Pang, Jody Ebanks, Chunhua Li