Patents by Inventor Zhi Wang

Zhi 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).

  • Patent number: 7190869
    Abstract: A two-mode photonic crystal fiber includes a core of a substantially transparent core material. The core material has a core refractive index and a length, and has a core diameter. The fiber also includes a cladding region surrounding the length of core material. The cladding region has a first substantially transparent cladding material, having a first refractive index. The first substantially transparent cladding material has embedded along its length a substantially periodic array of holes, having a diameter, d, and being spaced apart by a pitch, ?. The holes have a second refractive index, which is less than the first refractive index. The dimensions of the hole diameter, d, and the pitch, ?, co-operate to give two modes propagation within the photonic crystal fiber independent of input radiation wavelength for any value of the pitch, ?, for a substantially fixed d/? ratio within a range of approximately 0.45–0.65.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: March 13, 2007
    Assignee: The Hong Kong Polytechnic University
    Inventors: Wei Jin, Jian Ju, Zhi Wang
  • Publication number: 20070042392
    Abstract: The present invention provides novel nucleic acids, novel polypeptide sequences encoded by these nucleic acids and uses thereof.
    Type: Application
    Filed: August 31, 2005
    Publication date: February 22, 2007
    Applicant: NUVELO, Inc.
    Inventors: Y. Tang, Chenghua Liu, Vinod Asundi, Rui-hong Chen, Yunqing Ma, Feiyan Ren, Jian-Rui Wang, Thomas Wehrman, Chongjun Xu, Aidong Xue, Yonghong Yang, Jie Zhang, Qing Zhao, Ping Zhou, Radoje Drmanac, Yi-Cheng Cao, Dunrui Wang, Zhi Wang, Ryle Goodrich
  • Publication number: 20070036289
    Abstract: A voice authentication system using a removable voice ID card comprises: at server side, a voiceprint database for storing the voiceprints of all authorized users; a voiceprint updating means for updating the voiceprints in said voiceprint database; and a voiceprint digest generator for generating a voiceprint digest according to a request from a client; at client side, a voice ID card for storing the voiceprint of an authorized user; a validation means for validating the voiceprint in the voice ID card on the basis of the voiceprint digest from the server; an audio device for performing voice interaction with a user; and a voice authentication means for determining whether the voiceprint from said voice ID card is of the same speaker as the voice from said audio device. The present invention can significantly avoid the abuse of a voice ID card when it is lost or stolen by using the voiceprint digest stored at server side to verify the voiceprint in the voice ID card.
    Type: Application
    Filed: June 16, 2006
    Publication date: February 15, 2007
    Inventors: Guo Fu, Feng Shi, Zhi Wang, Yu Zhou
  • Publication number: 20060278210
    Abstract: A smokeless grill for food includes a supporting frame and a smokeless grilling arrangement. The smokeless grilling arrangement includes a heat accumulation housing, a heat generation module and a grill rack. The heat accumulation housing is supported on the supporting frame, and has a heat reflection cavity formed therein. The heat generation module, which is arranged to generate a predetermined amount of heat, supported in the heat accumulation housing, wherein the heat generated by the heat generation module is accumulatively reflected within the heat accumulation housing to substantially radiate to an exterior of the heat accumulation housing. The grill rack, which is supported by the supporting frame, adapted for supporting the food thereon, wherein the heat generated from the heat generation module is arranged to radiate on the food for heating up the food on the grill rack for grilling thereof in a smokeless manner.
    Type: Application
    Filed: January 18, 2006
    Publication date: December 14, 2006
    Inventor: Xi-zhi Wang
  • Publication number: 20060257423
    Abstract: The present invention provides a combined vaccine that includes hepatitis B vaccine (HeVac) and Bacille Calmette-Guerin (BCG) for intracutaneous injection and the method of preparation of such vaccine. The combined vaccine changes the now used liquid agent of the HeVac into a cryoprotectant, thus improving the heat stability of the HBsAg. Because of the cryoprotectant in the combined vaccine, the heat stability of the HBsAg is improved, and the efficacy of the vaccine is only slightly decreased after 30 days at 37° C., and the decrease is lower than with the liquid agent of the HeVac. The present invention changes the newborn's inoculation from two injections into one to simultaneously obtain prophylaxis of hepatitis B and tuberculosis.
    Type: Application
    Filed: May 26, 2004
    Publication date: November 16, 2006
    Inventors: Lijie Jin, Zhi Wang, Xiaolin Zhao, Lihua Yang, Wange Chen, Aidong Yu, Junye Sun, Fuxue Zou, Yanming Liu, Aihong Liu, Lihong Yu, Yan Cai, Manlun Yu, Yuwu Wang, Changjun Zhou, Tong Yang, Dejuan Li, Xuan Luo, Li Li
  • Publication number: 20060199951
    Abstract: The invention disclosed relates to functionalized zwitterionic chromophores of structural formula III and III?. Wherein A is a linear or branched alkyl group having up to 20 carbon atoms and the desired functional groups, B is hydrogen, alkyl, aryl, halo, heterocyclic, alkoxy or nitro groups at 2, 3, 5 or 6 positions on the pyridine ring, C is hydrogen, aryl or a linear or branched alkyl group at 2?, 3?, 5? or 6? positions on the benzene ring, which has up to 70 carbon atoms and contains the desired functional group, D is a linear or branched alkyl, aryl or substituted aryl group, which has up to 70 carbon atoms and contains the desired functional group, R is C1-C4 alkyl or aryl, and m is an integer of from 0 to 4.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 7, 2006
    Inventor: Zhi Wang
  • Patent number: 7088547
    Abstract: A disk drive is disclosed comprising control circuitry for generating a control signal applied to a VCM in response to a position error signal (PES) generated from reading embedded servo sectors and a feed-forward compensation value that compensates for a repeatable runout (RRO) disturbance. The feed-forward compensation value is generated for each servo sector in response to an RRO estimate ? computed recursively for each servo sector according to: S ^ n + 1 = S ^ n - ? ? [ S ^ n - 1 n ? ? i = 1 n ? ? PES i ] wherein: ? is a predetermined fraction; PESi is the position error signal generated for a selected servo sector during an ith revolution of the disk; and n represents a number of disk revolutions.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: August 8, 2006
    Assignee: Western Digital Technologies, Inc.
    Inventors: Zhi Wang, Jenghung Chen
  • Patent number: 7068451
    Abstract: A disk drive and method for estimating a sinusoidal error in a wedge time period is disclosed. An estimated WTP is calculated according to: EST_WTP=RTP+â*cos(2?k/N)+{circumflex over (b)}*sin(2?k/N) wherein RTP is a reference time period corresponding to a nominal WTP, k is an index representing a servo wedge, and {â,{circumflex over (b)}} are adjustable coefficients. A wedge time error e(k) is estimated as the difference between the estimated WTP and a detected actual WTP. The coefficients {â,{circumflex over (b)}} for generating the estimated WTP are adjusted according to: â(k+1)=â(k)?G*e(k)*cos(2?k/N) {circumflex over (b)}(k+1)={circumflex over (b)}(k)?G*e(k)*sin(2?k/N) wherein G is a predetermined gain.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: June 27, 2006
    Assignee: Western Digital Technologies, Inc.
    Inventors: Zhi Wang, Jenghung Chen, David Dung Tien Nguyen
  • Publication number: 20060093296
    Abstract: A two-mode photonic crystal fiber includes a core of a substantially transparent core material. The core material has a core refractive index and a length, and has a core diameter. The fiber also includes a cladding region surrounding the length of core material. The cladding region has a first substantially transparent cladding material, having a first refractive index. The first substantially transparent cladding material has embedded along its length a substantially periodic array of holes, having a diameter, d, and being spaced apart by a pitch, ?. The holes have a second refractive index, which is less than the first refractive index. The dimensions of the hole diameter, d, and the pitch, ?, co-operate to give two modes propagation within the photonic crystal fiber independent of input radiation wavelength for any value of the pitch, ?, for a substantially fixed d/? ratio within a range of approximately 0.45-0.65.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 4, 2006
    Inventors: Wei Jin, Jian Ju, Zhi Wang
  • Publication number: 20060054157
    Abstract: The present invention discloses a new type of practical, smokeless barbecue grill which relates to the field of household food processing appliances, particularly relates to the electric-heat grill used for roasting food. This electric-heated smokeless barbecue grill comprises an electric heat tube, a metal heat-reflection cover, a honeycomb grid, a stand, a grill rack, and a base tray. All those parts of the grill are set up in the pattern of: the base tray is on the stand, above the base tray there is the grill rack, above the rack is the honey comb grid, above the grid there is the electric-heat tube, above which is the metal heat-reflection cover having an arc shape, the rack is under the electric heat tube. This new and practical grill can be used for effectively preventing oil smoke which is resulted from the splashing down of oil drop from the meat, and avoiding a lot of oil smoke during the barbecue process.
    Type: Application
    Filed: June 10, 2005
    Publication date: March 16, 2006
    Inventors: Xi-Zhi Wang, Yao-Qu Liang
  • Patent number: 6999267
    Abstract: The present invention may be embodied in a method of determining a repeatable runout (RRO) compensation value set for a data track on a magnetic disk in a disk drive. The track comprises a plurality of embedded sectors that define a circumferential path having RRO requiring compensation during data read and write operation. In the method, track following is performed along the track and a position error signal (PES) is determined for each servo sector. An RRO compensation value is iteratively learned for each servo sector using the previously learned value for the servo sector and using the PES for the servo sector and for adjacent servo sectors.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: February 14, 2006
    Assignee: Western Digital Technologies, Inc.
    Inventors: Hemant Melkote, Zhi Wang
  • Publication number: 20060017191
    Abstract: Methods are provided for mechanically chopping nanotubes and other nanoscale fibrous materials. The method includes forming a macroscale article which include the nanoscale fibers, and then mechanically cutting the macroscale article into a finely divided form. In one embodiment, these steps are repeated. The nanoscale fibers may be carbon nanotubes, which optionally are aligned in the macroscale article. The macroscale article may be in the form of or include one or more buckypapers. In one embodiment, the macroscale article further includes a solid matrix material in which the nanoscale fibers are contained or dispersed. The forming step can include making a suspension of nanoscale fibers dispersed in a liquid medium and then solidifying the liquid medium to form the macroscale article. After the mechanical cutting step, the medium can be dissolved or melted to enable separation of the chopped nanoscale fibers from the medium.
    Type: Application
    Filed: July 20, 2005
    Publication date: January 26, 2006
    Inventors: Zhiyong Liang, Zhi Wang, Ben Wang, Chun Zhang
  • Publication number: 20060003945
    Abstract: The present invention provides a compound of formula I and the use thereof for the therapeutic treatment of disorders relating to or affected by the 5-HT6 receptor.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 5, 2006
    Applicant: Wyeth
    Inventors: Youchu Wang, Chia-Cheng Shaw, Ronald Bernotas, Chung-Chiee Wang, Ping Cai, Zhi Wang
  • Patent number: 6972540
    Abstract: A disk drive is disclosed wherein a BEMF speed error is measured during a BEMF spindle speed control mode, and a spindle control current is updated in response to the BEMF speed error to drive the disk at an operating speed. A reference time period (RTP) is calibrated, and a sinusoidal error in a wedge time period (WTP) due to eccentricity in the disk rotating is estimated to generate an eccentricity compensation value. After switching to a wedge spindle speed control mode, an actual WTP is detected and a wedge speed error is generated in response to the RTP, the detected actual WTP, and the eccentricity compensation value. The disk is then maintained at the operating speed by updating the spindle control current in response to the wedge speed error.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: December 6, 2005
    Assignee: Western Digital Technologies, Inc.
    Inventors: Zhi Wang, Jenghung Chen, David Dung Tien Nguyen
  • Publication number: 20050266423
    Abstract: The present invention provides novel nucleic acids, novel polypeptide sequences encoded by these nucleic acids and uses thereof.
    Type: Application
    Filed: November 29, 2004
    Publication date: December 1, 2005
    Applicant: NUVELO, Inc.
    Inventors: Y. Tang, Chenghua Liu, Vinod Asundi, Rui-hong Chen, Xiaohong Qian, Zhi Wang, Tom Wehrman, Jie Zhang, Ping Zhou, Yicheng Cao, Radoje Drmanac
  • Patent number: 6962798
    Abstract: The present invention relates to a novel cardiac-specific transcription factor, myocardin. This molecule modulates the development and differentiation of cardiomyocytes and is a potent inhibitor of cell growth. Methods to exploit these observations are provided and include respecifiying non-cardiac cells into cardiac cells, stimulating cardiac tissue regeneration, and methods for treating cardiomyopathies, myocardial infarction.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 8, 2005
    Assignee: Board of Regents, The University of Texas System
    Inventors: Eric N. Olson, Da-Zhi Wang
  • Publication number: 20050239741
    Abstract: Novel synthetic gangliosides and pharmaceutical compositions containing such synthetic gangliosides are described. Methods of making the novel synthetic ganglioside compounds and compositions as well as their use in the field of neuroprotection and cancer treatment is also described.
    Type: Application
    Filed: August 29, 2002
    Publication date: October 27, 2005
    Inventors: Shawn Defrees, Zhi Wang
  • Publication number: 20050170374
    Abstract: The present invention provides novel nucleic acids, novel polypeptide sequences encoded by these nucleic acids and uses thereof.
    Type: Application
    Filed: September 20, 2004
    Publication date: August 4, 2005
    Inventors: Y. Tang, Zhi Wang, Ping Zhou, Chongjun Xu, Feiyan Ren, Rui-Hong Chen, Jian-Rui Wang, Yonghong Yang, Radoje Drmanac
  • Patent number: 6903897
    Abstract: A method for improving the performance of a rotary actuator in a disk drive, the rotary actuator comprises a voice coil motor (VCM) characterized by a torque parameter, the disk drive comprises a servo control system having a motor driver circuit for receiving a series of command effort signals (CEFs) transmitted based on a first seek profile, and for providing an operating current to VCM based on the CEFs for causing a movement of the actuator from a first radial location to a target radial location. The method includes recording the transmitted CEFs, and while actuator is moving: adjusting each recorded CEF to account for a disk drive influence on actuator movement; storing adjusted CEFs; monitoring velocity of moving actuator; calculating an acceleration value corresponding to moving actuator from the stored CEFs and monitored velocity; and adjusting the acceleration value to account for a radial torque parameter variation.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: June 7, 2005
    Assignee: Western Digital Technologies, Inc.
    Inventors: Zhi Wang, Jenghung Chen
  • Publication number: 20040127442
    Abstract: The invention provides compositions and methods for treating a proliferative disorder in a subject, comprising administering a proliferation-inhibiting amount of a single-stranded oligonucleotide to the subject, wherein said single-stranded oligonucleotide is capable of binding to one or more DNA-binding proteins or RNA primers in the subject, thereby treating the proliferative disorder. The invention also provides a method for modulating transcription in a cell, comprising administering an oligonucleotide to cells, wherein the oligonucleotide consists essentially of one or more regulatory elements, wherein the one or more regulatory elements are capable of binding a DNA-binding protein.
    Type: Application
    Filed: July 3, 2003
    Publication date: July 1, 2004
    Inventors: Zhifang Zhu, Yuliang Cui, Qingqing Ding, Li Li, Zhi Wang