Patents by Inventor Yufeng Xu

Yufeng Xu 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).

  • Patent number: 12213223
    Abstract: A power supply circuit for an LED color-changing lamp is provided, which includes an input rectification circuit, an input filtering circuit, a control circuit, a transformer T1, an output rectification circuit, and an output filtering circuit; an input terminal of the input rectification circuit is connected to an AC power, an output terminal of the input rectification circuit is connected to the input filtering circuit. The input filtering circuit and the control circuit are both connected to an original side of the transformer T1; the output rectification circuit and the output filtering circuit are both connected to a secondary side of the transformer T1. The control circuit includes a first chip U1 in a model of MT3612. Through the above arrangement, the circuit is more integrated, the number of components in the circuit is reduced, the circuit structure is simplified, and the volume of the circuit board is reduced.
    Type: Grant
    Filed: August 21, 2024
    Date of Patent: January 28, 2025
    Inventor: Yufeng Xu
  • Patent number: 12191550
    Abstract: An apparatus for providing a connector for a microwave filter port is disclosed. According to one aspect, a subassembly includes a connector having a connector pin, a connector seat having a pass through conduit with a first opening for receiving the connector with the connector pin and a second opening at an opposite end of the pass through conduit, the connector pin protruding from the second opening when the connector is mounted to the connector seat. The subassembly further includes a coupling conductor soldered to the connector pin, where the coupling conductor is configured to be soldered to the connector pin before insertion of the subassembly into a channel of the microwave filter port.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: January 7, 2025
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Richard Wang, Andrew McNair, Yufeng Xu
  • Publication number: 20230035178
    Abstract: The disclosure provides basemats for fibrous panels, including a mineral wool present in an amount of at least about 60 wt %, based on the total weight of the basemat, a mineral filler, a cellulose present in an amount of about 1 wt % to about 3 wt %, based on the total weight of the basemat, and a binder. The basemat has a backing side and a facing side. Also provided are fibrous panels including the basemat of the disclosure and a porous veil.
    Type: Application
    Filed: July 23, 2021
    Publication date: February 2, 2023
    Applicant: USG INTERIORS, LLC
    Inventors: Yufeng Xu, Bangji Cao, William Frank, Qing C. Yu, Louis P. Stocco, Adam Warren Keller
  • Publication number: 20220399627
    Abstract: An apparatus for providing a connector for a microwave filter port is disclosed. According to one aspect, a subassembly includes a connector having a connector pin, a connector seat having a pass through conduit with a first opening for receiving the connector with the connector pin and a second opening at an opposite end of the pass through conduit, the connector pin protruding from the second opening when the connector is mounted to the connector seat. The subassembly further includes a coupling conductor soldered to the connector pin, where the coupling conductor is configured to be soldered to the connector pin before insertion of the subassembly into a channel of the microwave filter port.
    Type: Application
    Filed: October 21, 2020
    Publication date: December 15, 2022
    Inventors: Richard WANG, Andrew MCNAIR, Yufeng XU
  • Patent number: 10232588
    Abstract: An improved water-resistant gypsum product prepared with a high-viscosity siloxane is provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: March 19, 2019
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: Yufeng Xu, Wenqi Luan
  • Patent number: 10094614
    Abstract: The disclosure provides a method of forming an acoustical panel base mat, including providing a green board including an alkyl ether sulfate surfactant, wherein the green board includes from about 10 to about 40 wt. % solids, and dewatering the green board slurry to form a dewatered green board, wherein the dewatering comprises supplying hot air and applying a vacuum to the green board.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 9, 2018
    Assignee: USG INTERIORS, LLC
    Inventor: Yufeng Xu
  • Patent number: 10023496
    Abstract: The present disclosure relates to no fiber calcined gypsum and methods of making the same using a multi-stage (typically two-stage) calcination process. The first stage is a high temperature calcination and nucleation stage. The second stage is a lower temperature calcination and crystal growth stage which produces product slurry containing calcined gypsum particles having large, acicular calcined gypsum crystal morphology for use in making gypsum fiberboard.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 17, 2018
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventor: Yufeng Xu
  • Publication number: 20180164035
    Abstract: The disclosure provides a method of forming an acoustical panel base mat, including providing a green board including an alkyl ether sulfate surfactant, wherein the green board includes from about 10 to about 40 wt. % solids, and dewatering the green board slurry to form a dewatered green board, wherein the dewatering comprises supplying hot air and applying a vacuum to the green board.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 14, 2018
    Applicant: USG INTERIORS, LLC
    Inventor: Yufeng Xu
  • Patent number: 9950957
    Abstract: A roof cover board made from a mixture of 30-60% stucco; 20-50% perlite; 10-30% cellulose fiber; 3-20% starch; and siloxane. Also disclosed is a stucco-free roof cover board made from a mixture of 30-60% perlite, 30-60% cellulose fiber, 5-25% starch; and siloxane. Also disclosed are methods for making same.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: April 24, 2018
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: Yufeng Xu, Eugene S. Stivender
  • Patent number: 9933209
    Abstract: The disclosure provides a method of forming an acoustical panel base mat, including providing a green board including an alkyl ether sulfate surfactant, wherein the green board includes from about 10 to about 40 wt. % solids, and dewatering the green board slurry to form a dewatered green board, wherein the dewatering comprises supplying hot air and applying a vacuum to the green board.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: April 3, 2018
    Assignee: USG INTERIORS, LLC
    Inventor: Yufeng Xu
  • Publication number: 20170107152
    Abstract: A roof cover board made from a mixture of 30-60% stucco; 20-50% perlite; 10-30% cellulose fiber; 3-20% starch; and siloxane. Also disclosed is a stucco-free roof cover board made from a mixture of 30-60% perlite, 30-60% cellulose fiber, 5-25% starch; and siloxane. Also disclosed are methods for making same.
    Type: Application
    Filed: March 31, 2016
    Publication date: April 20, 2017
    Inventors: Yufeng Xu, Eugene S. STIVENDER
  • Patent number: 9410058
    Abstract: A water-resistant gypsum fiber product comprising siloxane and coated with a coating comprising alkali metal organosiliconate is provided. A method of making a gypsum fiber product in which siloxane is cross-linked at the surface of the product is also provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: August 9, 2016
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: David R. Blackburn, Yufeng Xu
  • Publication number: 20150306846
    Abstract: An improved water-resistant gypsum product prepared with a high-viscosity siloxane is provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.
    Type: Application
    Filed: October 24, 2014
    Publication date: October 29, 2015
    Inventors: Yufeng Xu, Wenqi Luan
  • Publication number: 20150291844
    Abstract: A water-resistant gypsum fiber product comprising siloxane and coated with a coating comprising alkali metal organosiliconate is provided. A method of making a gypsum fiber product in which siloxane is cross-linked at the surface of the product is also provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.
    Type: Application
    Filed: January 26, 2015
    Publication date: October 15, 2015
    Inventors: David R. Blackburn, Yufeng Xu
  • Patent number: 9013427
    Abstract: The present disclosure relates to communication technologies and discloses a method and terminal of displaying a contact list. The method of displaying a contact list is applied on an apparatus with a touch sensitive display, comprising: detecting a touch on the touch sensitive display, after receiving an instruction for opening a contact list; determining a touch position, when detecting the touch on the touch sensitive display; and determining a large contact group corresponding to the touch position, and displaying contacts in the large contact group by the touch sensitive display. With the present disclosure, a user can find out a contact quickly, and the user's experience can be improved.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: April 21, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Rui Li, Yong Liu, Yufeng Xu
  • Publication number: 20150034264
    Abstract: This invention relates to paper products and/or substrates suitable for being made and/or converted into wallboard tape; which also may be known as joint tape and/or drywall tape, having a pH of at least 7.0 and containing a plurality of cellulose fibers, a wet strength additive, an alkaline sizing agent, and an anionic promoter, as well as methods of making and using the same.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Inventors: Stephen A. BUZZA, Dennis W. ANDERSON, Yufeng XU, Bruce Richard MC GAFFIN, Christopher Michael WILSON
  • Patent number: 8388802
    Abstract: This invention relates to paper products and/or substrates suitable for being made and/or converted into wallboard tape; which also may be known as joint tape and/or drywall tape, having a pH of at least 7.0 and containing a plurality of cellulose fibers, a wet strength additive, an alkaline sizing agent, and an anionic promoter, as well as methods of making and using the same.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: March 5, 2013
    Assignee: International Paper Company
    Inventors: Stephen A. Buzza, Dennis W. Anderson, Yufeng Xu, Bruce Richard McGaffin, Christopher Michael Wilson
  • Publication number: 20130027335
    Abstract: The present disclosure relates to communication technologies and discloses a method and terminal of displaying a contact list. The method of displaying a contact list is applied on an apparatus with a touch sensitive display, comprising: detecting a touch on the touch sensitive display, after receiving an instruction for opening a contact list; determining a touch position, when detecting the touch on the touch sensitive display; and determining a large contact group corresponding to the touch position, and displaying contacts in the large contact group by the touch sensitive display. With the present disclosure, a user can find out a contact quickly, and the user's experience can be improved.
    Type: Application
    Filed: August 22, 2012
    Publication date: January 31, 2013
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Rui Li, Yong Liu, Yufeng Xu
  • Patent number: D731497
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: June 9, 2015
    Assignee: LOCTEK VISUAL TECHNOLOGY CORP.
    Inventors: Lehong Xiang, Qiang Chen, Yufeng Xu
  • Patent number: D771633
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: November 15, 2016
    Assignee: LOCTEK VISUAL TECHNOLOGY CORP.
    Inventors: Lehong Xiang, Qiang Chen, Yufeng Xu