Patents by Inventor Shaofu Wu

Shaofu Wu 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: 20220014123
    Abstract: A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 13, 2022
    Inventors: Guanxing ZHAO, Shaofu WU, Dajun WU, Zhijun MENG
  • Patent number: 10958203
    Abstract: There are provided a method, a system and a device for calibrating a frequency of a driving voltage waveform for a linear resonance device. An actual sampling frequency is continuously corrected, so that a difference between a measured natural frequency of the linear resonance device obtained during a calibration process and a frequency of a standard driving voltage waveform stored in a driving chip for the linear resonance device is in a predetermined range. The driving chip outputs a driving waveform at a finally corrected actual sampling frequency, to drive the linear resonance device. Further, only an actual sampling frequency is required to be adjusted, and it is not required to modify waveform data stored in the driving chip for the linear resonance device.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 23, 2021
    Assignee: Shanghai Awinic Technology Co., LTD
    Inventors: Zhijun Meng, Shaofu Wu, Guanxing Zhao, Dajun Wu
  • Publication number: 20200195184
    Abstract: There are provided a method, a system and a device for calibrating a frequency of a driving voltage waveform for a linear resonance device. An actual sampling frequency is continuously corrected, so that a difference between a measured natural frequency of the linear resonance device obtained during a calibration process and a frequency of a standard driving voltage waveform stored in a driving chip for the linear resonance device is in a predetermined range. The driving chip outputs a driving waveform at a finally corrected actual sampling frequency, to drive the linear resonance device. Further, only an actual sampling frequency is required to be adjusted, and it is not required to modify waveform data stored in the driving chip for the linear resonance device.
    Type: Application
    Filed: November 14, 2019
    Publication date: June 18, 2020
    Applicant: Shanghai Awinic Technology Co., LTD
    Inventors: Zhijun MENG, Shaofu WU, Guanxing ZHAO, Dajun WU
  • Publication number: 20180248062
    Abstract: Disclosed are polyolefin copolymer films comprising alkoxysilane groups and a catalyst for crosslinking the alkoxysilane groups; wherein the crosslinking catalyst is a Lewis or Bronsted acid or base compound that has a relatively high melting point and therefore initiates the crosslinking essentially only at the lamination temperature, preferably at or above at least 50° C. Also disclosed are films wherein (i) the layer or layers comprising the alkoxysilane groups, including surface layer(s), comprise the crosslinking catalyst; or (ii) layer or layers comprising alkoxysilane groups do not contain crosslinking catalyst and have a facial surface in adhering contact with a layer of a thermoplastic polyolefin copolymer comprising the crosslinking catalyst; or (iii) there is a combination of layers (i) and (ii). Also disclosed are laminated glass structures and processes for their preparation that employ such films. The disclosed laminate structures include safety glass and photovoltaic modules.
    Type: Application
    Filed: May 2, 2018
    Publication date: August 30, 2018
    Inventors: John D. Weaver, Shaofu Wu, Joseph Dooley, William J. Harris, Chang Dong Lee
  • Publication number: 20180148525
    Abstract: An electronic device module comprises: A. At least one electronic device, e.g., a solar cell, and B. A polymeric material in intimate contact with at least one surface of the electronic device, the polymeric material comprising an ethylene multi-block copolymer. Typically, the polyolefin material is an ethylene multi-block copolymer with a density of less than about 0.90 grams per cubic centimeter (g/cc). The polymeric material can fully encapsulate the electronic device, or it can be laminated to one face surface of the device. Optionally, the polymeric material can further comprise a scorch inhibitor, and the copolymer can remain uncrosslinked or it can be crosslinked.
    Type: Application
    Filed: January 18, 2018
    Publication date: May 31, 2018
    Inventors: Rajen M. Patel, Shaofu Wu, Mark T. Bernius, Mohamed Esseghir, Robert L. McGee, Michael H. Mazor, John Naumovitz
  • Publication number: 20160134231
    Abstract: Photovoltaic or solar module frames, racks, or frame or rack components are made from a composition comprising (A) a thermoplastic polymer, particularly a thermoplastic polyolefin, (B) a reinforcing element, particularly glass fiber, (C) a non-halogen containing, intumescent flame retardant, (D) an impact-modifier, particularly a polyolefin elastomer, (E) a coupling agent, and, optionally, (F) one or more additives such as an antioxidant, UV-stabilizer, etc. These frames provide for easy assembly without the need for screws, bolts or other metal fasteners.
    Type: Application
    Filed: June 28, 2013
    Publication date: May 12, 2016
    Inventors: Shaofu Wu, YanLi Huo, Yongjin Guo, Wenbin Yao, Zhiqing Lin, Jie Cai, Bin Chen, Yudong Qi, Libo Du, Hongyu Chen
  • Patent number: 9243140
    Abstract: Impact modified compositions having good impact performance can be made from a thermoplastic (e.g., a polyolefin such as polypropylene or HDPE) and a multi-block ethylene/?-olefin interpolymer. The compositions are easily molded and often have particular utility in making, for example, automotive facia, parts and other household articles.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: January 26, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Kim L. Walton, Gary R. Marchand, Shrikant Dhodapkar, Mridula Kapur, Shaofu Wu
  • Patent number: 9219182
    Abstract: The fluoropolymer compositions of the present invention generally incorporate ingredients comprising one or more fluoropolymers, an ultraviolet light protection component (hereinafter UV protection component), and optionally one or more additional ingredients if desired. The UV protection component includes a combination of at least one hindered tertiary amine (HTA) compound having a certain structure and a weight average molecular weight of at least 1000. This tertiary amine is used in combination with at least one organic, UV light absorbing compound (UVLA compound) having a weight average molecular weight greater than 500. When the HTA compound and the UVLA compound are selected according to principles of the present invention, the UV protection component provides fluoropolymer compositions with significantly improved weatherability characteristics for protecting underlying materials, features, structures, components, and/or the like.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: December 22, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Xuming Chen, Pak-Wing S. Chum, Kevin E. Howard, Leonardo C. Lopez, William C. Sumner, Shaofu Wu
  • Patent number: 9169340
    Abstract: An electronic device module comprises: A. At least one electronic device, e.g., a solar cell, and B. A polymeric material in intimate contact with at least one surface of the electronic device, the polymeric material comprising an ethylene multi-block copolymer. Typically, the polyolefin material is an ethylene multi-block copolymer with a density of less than about 0.90 grams per cubic centimeter (g/cc). The polymeric material can fully encapsulate the electronic device, or it can be laminated to one face surface of the device. Optionally, the polymeric material can further comprise a scorch inhibitor, and the copolymer can remain uncrosslinked or it can be crosslinked.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 27, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Rajen M. Patel, Shaofu Wu, Mark T. Bernius, Mohamed Esseghir, Robert L. McGee, Michael H. Mazor, John A. Naumovitz
  • Patent number: 9148390
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The virtual chassis system is operable to provide warnings to help prevent a virtual chassis split event in response to an administrative action. The topology of the virtual chassis system is analyzed to determine the possible impact of one or more administrative actions. Based on this analysis, a warning is generated when an administrative action is requested that may lead directly or indirectly to a virtual chassis split.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 29, 2015
    Assignee: Alcatel Lucent
    Inventors: Stephen C. Hanka, Roberto H. Jacob Da Silva, Shaofu Wu, Amy Chung-Hua Chang
  • Patent number: 9148389
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The packets include source MAC addresses and associated hardware device information, such as source chassis ID, source network interface identifier and source port identifier information. The network nodes use this information to maintain synchronized MAC address tables for forwarding of packets in the virtual chassis system.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 29, 2015
    Assignee: Alcatel Lucent
    Inventors: Roberto H. Jacob Da Silva, Gregory G. Page, Surajit Bhattacharya, Chung-Hua Chang, Stephen C. Hanka, Steve Larsen, Christopher Francis Ravenscroft, Eric W. Tolliver, Anand Vinayagam, Shaofu Wu, Ignatius D. Santoso, Nalinakshan Kunnath, Stephen R. Bates
  • Publication number: 20140202533
    Abstract: Disclosed are polyolefin copolymer films comprising alkoxysilane groups and a catalyst for cross-linking the alkoxysilane groups; wherein the cross-linking catalyst is a Lewis or Bronsted acid or base compound that has a relatively high melting point and therefore initiates the cross-linking essentially only at the lamination temperature, preferably at or above at least 50° C. Also disclosed are films wherein (i) the layer or layers comprising the alkoxysilane groups, including surface layer(s), comprise the cross-linking catalyst; or (ii) layer or layers comprising alkoxysilane groups do not contain cross-linking catalyst and have a facial surface in adhering contact with a layer of a thermoplastic polyolefin copolymer comprising the cross-linking catalyst; or (iii) there is a combination of layers (i) and (ii). Also disclosed are laminated glass structures and processes for their preparation that employ such films. The disclosed laminate structures include safety glass and photovoltaic modules.
    Type: Application
    Filed: November 7, 2011
    Publication date: July 24, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: John D. Weaver, Shaofu Wu, Joseph Dooley, William J. Harris, Chang Dong Lee
  • Publication number: 20140124031
    Abstract: The fluoropolymer compositions of the present invention generally incorporate ingredients comprising one or more fluoropolymers, an ultraviolet light protection component (hereinafter UV protection component), and optionally one or more additional ingredients if desired. The UV protection component includes a combination of at least one hindered tertiary amine (HTA) compound having a certain structure and a weight average molecular weight of at least 1000. This tertiary amine is used in combination with at least one organic, UV light absorbing compound (UVLA compound) having a weight average molecular weight greater than 500. When the HTA compound and the UVLA compound are selected according to principles of the present invention, the UV protection component provides fluoropolymer compositions with significantly improved weatherability characteristics for protecting underlying materials, features, structures, components, and/or the like.
    Type: Application
    Filed: July 3, 2012
    Publication date: May 8, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Xuming Chen, Pak-Wing S. Chum, Kevin E. Howard, Leonardo C. Lopez, William C. Sumner, Shaofu Wu
  • Patent number: 8686056
    Abstract: Olefin polymer-based, durable, open-cell foam compositions, structures and articles derived from same; methods for preparation of such foams; and use of the dry durable foams in various applications are disclosed. Further described is use of the foams and structures and articles made of same in absorption, filtration, insulation, cushioning and backing applications, and in particular for odor removal, hygiene and medical applications due to, among other properties, good absorption capabilities, softness and/or flexibility of the foams and their recyclable nature.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 1, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Gary M. Strandburg, Mark W. VanSumeren, Shaofu Wu, Luther E. Stockton
  • Publication number: 20140007940
    Abstract: Disclosed are thermoplastic resin formulations for use as a light transmitting layer (e.g., encapsulant layer) in a photovoltaic module comprising: (a) a light transmitting thermoplastic resin, (b) at least one down conversion material that exhibits a maximum in incident radiation absorption in the range of 280 to 500 nm and a maximum in radiation emission at a relatively longer wavelength in the range of 400 to 900 nm and improves the efficiency of photovoltaic electric current generation in a photovoltaic module; and (c) a light stabilizer additive that transmits at least about 40 percent of the ultraviolet (UV) electromagnetic radiation having a wavelength in the range of from about 280 nm to about 380 nm. Also disclosed are sheet materials prepared from such resins and photovoltaic modules incorporating such sheet materials.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 9, 2014
    Inventors: Shaofu Wu, Xuming Chen, Michael A. De Graaf, Steven R. Erskine, Rebekah K. Feist
  • Patent number: 8609231
    Abstract: The present invention generally relates to composite laminates and uses thereof in articles in need of protection from mechanical damage and water or oxygen based degradation.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: December 17, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Shaofu Wu, Peter S. Martin, Xuming Chen, Michelle L. Boven, Weijun Zhou, Valentina A. Kuznetsova
  • Patent number: 8592679
    Abstract: An electronic device module comprising: A. At least one electronic device, e.g., a solar cell, and B. A polymeric material in intimate contact with at least one surface of the electronic device, the polymeric material comprising (1) a polyolefin copolymer with at least one of (a) a density of less than about 0.90 g/cc, (b) a 2% secant modulus of less than about 150 megaPascal (mPa) as measured by ASTM D-882-02), (c) a melt point of less than about 95 C, (d) an ?-olefin content of at least about 15 and less than about 50 wt % based on the weight of the polymer, (e) a Tg of less than about ?35 C, and (f) a SCBDI of at least about 50, (2) optionally, free radical initiator, e.g., a peroxide or azo compound, or a photoinitiator, e.g., benzophenone, and (3) optionally, a co-agent. Typically, the polyolefin copolymer is an ethylene/?-olefin copolymer. Optionally, the polymeric material can further comprise a vinyl silane and/or a scorch inhibitor, and the copolymer can remain uncrosslinked or be crosslinked.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 26, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Rajen M. Patel, Shaofu Wu, Mark T. Bernius, Mohamed Esseghir, Robert L. McGee, Michael H. Mazor, John A. Naumovitz
  • Patent number: D710792
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: August 12, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Jie Cai, YongJin Guo, YanLi Huo, Shaofu Wu, Wenbin Yao
  • Patent number: D710793
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: August 12, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Jie Cai, Yongjin Guo, Yanli Huo, Shaofu Wu, Wenbin Yao
  • Patent number: D733645
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: July 7, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Jie Cai, YongJin Guo, YanLi Huo, Shaofu Wu, Wenbin Yao