Patents by Inventor Chan Wang

Chan Wang 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: 20190002632
    Abstract: A process for reducing diethylene glycol formation in polyethylene terephthalate includes (a) subjecting a mixture of bis(2-hydroxyethyl)terephthalate with aromatic polycarboxylic acid to an esterification reaction, and (b) subjecting the esterification reaction product to polycondensation.
    Type: Application
    Filed: October 27, 2017
    Publication date: January 3, 2019
    Inventors: Der-Ren Hwang, Cheng-Ting Wang, Hsiao-Chan Wang
  • Publication number: 20190002388
    Abstract: A process for preparing bis(2-hydroxyethyl) terephthalate, comprising a step of: subjecting ethylene oxide and terephthalic acid in a molar ratio of from 2:1 to 3:1 to a reaction at an elevated temperature in the presence of a solvent mixture containing water and a C6-C8 hydrocarbon in a weight ratio of from 1:1 to 3:1.
    Type: Application
    Filed: October 11, 2017
    Publication date: January 3, 2019
    Applicant: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Der-Ren Hwang, Cheng-Ting Wang, Hsiao-Chan Wang
  • Publication number: 20180324909
    Abstract: The present invention provides a light emitting diode (LED) driving circuit with low harmonic distortion. The LED driving circuit comprises: a rectifying circuit, a linear constant current circuit, a current limiting circuit, and a current limiting ramp slope determining circuit. The rectifying circuit is utilized for rectifying an alternating current (AC) power source to provide a direct current (DC) voltage output. The linear constant current circuit is utilized for driving at least an LED. The current limiting circuit is connected in parallel between the rectifying circuit and the linear constant current circuit, and utilized for generating a current limiting effect and determining a current limiting height. The current limiting ramp slope determining circuit is connected in parallel between the rectifying circuit and the linear constant current circuit and connected in series with the current limiting circuit, and utilized for determining a current limiting ramp slope.
    Type: Application
    Filed: July 17, 2017
    Publication date: November 8, 2018
    Inventors: Yu-Chen Lin, Hung-Chan Wang, Jin-Ping Liu
  • Patent number: 10063655
    Abstract: An information processing method, a trusted server, and a cloud server. The method includes acquiring user data of a user terminal, extracting summary information of the user data, where the summary information includes privacy information and non-privacy information of a user, generating a unique identifier (UID) for the privacy information, and transmitting the non-privacy information and the UID to a cloud server, so that the cloud server saves a correspondence between the non-privacy information and the UID.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 28, 2018
    Assignee: HUAWEI DEVICE (DONGGUAN) CO., LTD.
    Inventors: Chan Wang, Huangwei Wu
  • Patent number: 10038029
    Abstract: A light-emitting device includes a growth substrate, a plurality of light-emitting diode units formed on the growth substrate and arranged in a closed loop, an electrode directly formed on the growth substrate, an electrical connection structure formed on the growth substrate and connecting the plurality of light-emitting diode units with the electrode, and a plurality of rectifying diodes connecting to respective nodes of the closed loop.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: July 31, 2018
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Schang-Jing Hon, Alexander Chan Wang, Li-Tian Liang, Chin-Yung Fan, Chien-Kai Chung, Min-Hsun Hsieh
  • Publication number: 20180213354
    Abstract: A location-based reminding method includes obtaining, by an indication device, reminding information and at least one reminding account that are set by a user, where each of the at least one reminding account is corresponding to at least one reminding device; generating, by the indication device, first information that includes the reminding information; and sending, by the indication device, the first information to a reminding device corresponding to the at least one reminding account, so that the reminding device corresponding to the at least one reminding account obtains second information according to the first information, where the second information includes the reminding information and a target geographic area, each reminding device corresponding to the at least one reminding account issues the reminding information when determining that the reminding device meets a preset reminding condition, and the preset reminding condition includes entering the target geographic area.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 26, 2018
    Inventors: Chan Wang, Henghui Lu, Huangwei Wu
  • Publication number: 20180205562
    Abstract: A method and a corresponding terminal for an encrypted call, to resolve disadvantages of an encrypted call that is implemented relying on a key management center (KMC) and network reconstruction, and reduce costs. The method includes establishing, by a first terminal, a circuit switched call with a second terminal, determining, by the first terminal using the circuit switched call, a key for performing an encrypted call with the second terminal, and performing, by the first terminal, an encrypted call with the second terminal using the key.
    Type: Application
    Filed: August 27, 2015
    Publication date: July 19, 2018
    Inventors: Shuiping Long, Chan Wang
  • Patent number: 10017454
    Abstract: The present disclosure provides a method of manufacturing bis(2-hydroxyethyl) cyclohexane-1,4-dicarboxylate (BHCD) and derivatives thereof. The method includes the following steps. A first reactant including bis-hydroxyethyl terephthalate (BHET) is provided. 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl terephthalate (BHEET) is added to the first reactant including BHET to form a second reactant. The second reactant is hydrogenated.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 10, 2018
    Assignee: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Der-Ren Hwang, Cheng-Ting Wang, Hsiao-Chan Wang, Chun-Chieh Chien, Kang-Rui Liu
  • Publication number: 20180081490
    Abstract: A device, and an adjustable parameter adjustment method for a device, where the device includes a touchscreen, and the touchscreen includes a touch sensor and a fingerprint sensor. A processor first adjusts a value of an adjustable parameter to a first value according to touch input of a user on the touch sensor, then receives accurate fingerprint input using the fingerprint sensor, and accurately adjusts the value of the adjustable parameter from the first value to a second value according to the fingerprint input in order to facilitate use for the user.
    Type: Application
    Filed: March 31, 2015
    Publication date: March 22, 2018
    Inventors: Chan Wang, Huangwei Wu, Yu Zhu
  • Patent number: 9913326
    Abstract: An LED driving circuit includes a charging-discharging circuit and a constant-current unit. The charging-discharging circuit is coupled to an AC current source, and includes an impedance, a diode and an energy storing circuit. The energy storing circuit is coupled to the impedance, the diode, and an LED unit. The constant-current unit is coupled to the charging-discharging circuit in series, and is arranged to regulate current. During the positive half cycle of the AC current source, the constant-current unit charges the energy storing circuit via the impedance; and during the negative half cycle of the AC current source, the energy storing circuit provides the LED unit with a discharging current via the diode, making the driving current of the LED driving circuit remain stable even when the AC current changes from the positive half cycle to the negative half cycle, thus preventing the flicker effect.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: March 6, 2018
    Assignee: EDISON OPTO (DONGGUAN) CO., LTD.
    Inventors: Yu-Chen Lin, Hung-Chan Wang, Tsung-Heng Lin
  • Publication number: 20180034955
    Abstract: The present application discloses a mobile terminal control method, including: receiving a communication request sent by a communication request initiating party, and calculating a time interval between a time when the communication request is received and a time when a previous communication request from the communication request initiating party is received; and if the time interval is greater than a preset threshold, skipping generating a vibrating and/or ringtone alert for the communication request, and detecting an online status of a communications software account associated with the communication request initiating party and sending prompt information to an online communications software account, where the prompt information is used to indicate that a mobile terminal is in a Do Not Disturb mode.
    Type: Application
    Filed: October 9, 2017
    Publication date: February 1, 2018
    Inventors: Chan WANG, Huangwei WU
  • Publication number: 20170342016
    Abstract: The present disclosure provides a method of manufacturing bis(2-hydroxyethyl) cyclohexane-1,4-dicarboxylate (BHCD) and derivatives thereof. The method includes the following steps. A first reactant including bis-hydroxyethyl terephthalate (BHET) is provided. 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl terephthalate (BHEET) is added to the first reactant including BHET to form a second reactant. The second reactant is hydrogenated.
    Type: Application
    Filed: September 30, 2016
    Publication date: November 30, 2017
    Inventors: Der-Ren Hwang, Cheng-Ting Wang, Hsiao-Chan Wang, Chun-Chieh Chien, Kang-Rui Liu
  • Patent number: 9825924
    Abstract: A file sharing method and apparatus. The method includes uploading, by a first terminal, each encrypted file to a server for saving, and receiving a uniform resource locator (URL) that is returned by the server and corresponds to a location for saving each encrypted file, generating a key package that includes a shared key and a URL that correspond to a file to be shared, and providing the key package for a second terminal, so that the second terminal acquires a corresponding encrypted file by using the URL in the key package, and decrypts the acquired encrypted file by using the shared key in the key package.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: November 21, 2017
    Assignee: HUAWEI DEVICE (DONGGUAN) CO., LTD.
    Inventors: Jiejing Huang, Huangwei Wu, Chan Wang
  • Patent number: 9813548
    Abstract: The present invention discloses a mobile terminal control method, including: receiving a communication request sent by a communication request initiating party, and calculating a time interval between a time when the communication request is received and a time when a previous communication request from the communication request initiating party is received; and if the time interval is greater than a preset threshold, skipping generating a vibrating and/or ringtone alert for the communication request, and detecting an online status of a communications software account associated with the communication request initiating party and sending prompt information to an online communications software account, where the prompt information is used to indicate that a mobile terminal is in a Do Not Disturb mode.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: November 7, 2017
    Assignee: Huawei Device (Dongguan) Co., Ltd.
    Inventors: Chan Wang, Huangwei Wu
  • Publication number: 20170308732
    Abstract: The present disclosure discloses a fingerprint recognition method and apparatus, and a mobile terminal, which are related to the field of information recognition technologies, and are used to reduce power consumption of the mobile terminal while implementing timely fingerprint collection. According to embodiments of the present disclosure, the mobile terminal determines a first fingerprint recognition area of a touchscreen according to a first user interface, and detects a touch operation of a user on the touchscreen; activates a fingerprint recognition function of the first fingerprint recognition area when a touch position corresponding to the touch operation is located in the first fingerprint recognition area, and obtains corresponding first fingerprint information according to the touch operation; and executes at least one function when the first fingerprint information matches preset fingerprint information.
    Type: Application
    Filed: September 9, 2014
    Publication date: October 26, 2017
    Inventors: Chan Wang, Huangwei Wu
  • Patent number: 9756457
    Abstract: A method for establishing a Bluetooth® connection, a mobile terminal, a Bluetooth® device, and a system, where the method includes establishing data connections with at least two Bluetooth® devices, obtaining a voice connection instruction, where the voice connection instruction includes identification information of a target Bluetooth® device selected by a user from the Bluetooth® devices, and establishing a voice connection between the mobile terminal and the target Bluetooth® device according to the voice connection instruction. A voice connection is established with a Bluetooth® device selected by a user in order to improve an extent to which a Bluetooth® connection is established intelligently and a capability of interacting with the user. Therefore, the user can, according to needs, freely select a Bluetooth® device with which a connection is established, thereby improving convenience of the user in using the Bluetooth® device.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 5, 2017
    Assignee: HUAWEI DEVICE CO., LTD.
    Inventors: Chan Wang, Huangwei Wu, Jiejing Huang
  • Publication number: 20170230362
    Abstract: An identity authentication method includes detecting a scenario in which the user equipment is located, determining, from at least two different authentication levels of the user equipment, an authentication level corresponding to the scenario in which the user equipment is located, acquiring current biometric feature data entered by a user, and determining, according to the current biometric feature data, preconfigured biometric feature data, and the authentication level, whether identity authentication succeeds.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 10, 2017
    Inventors: Chan Wang, Huangwei Wu, Xi Huang, Wenjuan Chen, Yu Zhu
  • Patent number: 9641340
    Abstract: A certificateless multi-proxy signature method and apparatus, where the method may include computing, by a proxy signature device, a public key and a private key of the proxy signature device according to a public parameter, where the public key is corresponding to the private key, acquiring a verification result of a standard signature and determining, according to the verification result, whether the standard signature is valid, computing a partial proxy signature of the proxy signature device according to the private key if the verification result is used to represent that the standard signature is valid, and sending the partial proxy signature to a proxy signature device administrator, so that after the proxy signature device administrator obtains a multi-proxy signature through computation according to the partial proxy signature, a multi-proxy signature verification device verifies the multi-proxy signature.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 2, 2017
    Assignee: Huawei Device Co., Ltd.
    Inventors: Chan Wang, Huangwei Wu
  • Publication number: 20170098383
    Abstract: An aid for practicing handwriting is described herein. In some embodiments, the handwriting aid comprises a medium having one or more writing bands marked thereon, a writing band including horizontal lines defining adjacent rows. Columns divide the adjacent rows into blocks in which letters or portions thereof are to be written, wherein the columns have width less than width of the blocks and provide spacing between the letters. The blocks can have uniform width and height for consistent letter size.
    Type: Application
    Filed: February 8, 2016
    Publication date: April 6, 2017
    Inventor: Chan Wang BOHACHEFF
  • Publication number: 20170094453
    Abstract: A method for establishing a Bluetooth® connection, a mobile terminal, a Bluetooth® device, and a system, where the method includes establishing data connections with at least two Bluetooth® devices, obtaining a voice connection instruction, where the voice connection instruction includes identification information of a target Bluetooth® device selected by a user from the Bluetooth® devices, and establishing a voice connection between the mobile terminal and the target Bluetooth® device according to the voice connection instruction. A voice connection is established with a Bluetooth® device selected by a user in order to improve an extent to which a Bluetooth® connection is established intelligently and a capability of interacting with the user. Therefore, the user can, according to needs, freely select a Bluetooth® device with which a connection is established, thereby improving convenience of the user in using the Bluetooth® device.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Inventors: Chan Wang, Huangwei Wu, Jiejing Huang