Patents by Inventor Wen Dong

Wen Dong 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: 6753595
    Abstract: A substrate used in a semiconductor device. The substrate includes a first wiring layer, a second wiring layer, and an interconnection-wiring layer. The first wiring layer includes a plurality of first pads while the second wiring layer includes a plurality of second pads. The interconnection-wiring layer is set between the first and second wiring layer. In this case, at least one of the second pads isn't electrically connected with anyone of the first pads, and other second pads that located adjacent to this second pad, which is not electrically connected with the first pads, electrically connect to the interconnection-wiring layer. Furthermore, this invention also discloses a semiconductor device including the substrate.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: June 22, 2004
    Assignee: Silicon Integrated Systems Corp
    Inventors: Wei Feng Lin, Chung Ju Wu, Wen-Yu Lo, Wen-Dong Yen
  • Patent number: 6721138
    Abstract: An inductive transducer having first and second magnetic pedestals disposed between first and second magnetic pole layers and adjacent to a media-facing surface, the pedestals separated by a submicron, nonmagnetic gap. The first pedestal extends less than the second pedestal from the media-facing surface, defining a short throat height. The second pedestal extends further to provide sufficient area for stitching to the second pole layer. The stitching and the thickness provided by the pedestals allow plural coil layers to be disposed between the pole layers, and the second pedestal, as well as other features, can be defined by high-resolution photolithography. The two coil layers have lower resistance, lower inductance and allow the pole layers to be shorter, improving performance. All or part of either or both of the pedestals may be formed of high magnetic saturation material, further enhancing performance.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: April 13, 2004
    Assignee: Western Digital (Fremont), Inc.
    Inventors: Yingjian Chen, Xizeng Shi, Hugh Craig Hiner, Zi-Wen Dong, Francis Liu, Matthew R. Gibbons, Joyce Anne Thompson, William D. Jensen, Chester Xiaowen Chien, Yugang Wang
  • Patent number: 6697553
    Abstract: A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: February 24, 2004
    Assignee: JDS Uniphase Corporation
    Inventors: Jyoti Kiron Bhardwaj, Robert James Brainard, David J. Chapman, Douglas E. Crafts, Zi-Wen Dong, David Dougherty, Erik W. Egan, James F. Farrell, Mark B. Farrelly, Niranjan Gopinathan, Kenzo Ishida, David K. Nakamoto, Thomas Thuan Nguyen, Suresh Ramalingam, Steven M. Swain, Sanjay M. Thekdi, Anantharaman Vaidyanathan, Hiroaki Yamada, Yingchao Yan
  • Publication number: 20030172590
    Abstract: There is provided is a process for preparation of synthesis gas, i.e. mixtures containing dihydrogen and oxides of carbon, from feedstocks containing methane and/or higher hydrocarbons having from about 2 to about 12 carbon atoms by an initial catalytic treatment of feedstock to provide a methane-containing gaseous mixture substantially free of compounds having 2 or more carbon atoms, and reforming the gaseous mixture at elevated temperatures using nickel-containing catalytic materials that are unusually active under mild conditions of conversion and resistant to deactivation. The process consists fundamentally in converting the higher hydrocarbon compounds to form a methane-containing gaseous mixture substantially free of compounds having 2 or more carbon atoms in an initial conversion zone containing a catalyst while controlling temperatures within the initial conversion zone to temperatures in a range of temperature downward from about 500° C. to about 300° C.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 18, 2003
    Inventors: Alakananda Bhattacharyya, Wen-Dong Chang
  • Publication number: 20030156789
    Abstract: A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
    Type: Application
    Filed: February 15, 2002
    Publication date: August 21, 2003
    Inventors: Jyoti Kiron Bhardwaj, Robert James Brainard, David J. Chapman, Douglas E. Crafts, Zi-Wen Dong, David Dougherty, Erik W. Egan, James F. Farrell, Mark B. Farrelly, Niranjan Gopinathan, Kenzo Ishida, David K. Nakamoto, Thomas Thuan Nguyen, Suresh Ramalingam, Steven M. Swain, Sanjay M. Thekdi, Anantharaman Vaidyanathan, Hiroaki Yamada, Yingchao Yan
  • Publication number: 20030148930
    Abstract: Reagents, methods, and kits are described that are useful for fertility testing and that in many cases provides much faster, convenient and rapid determination of male infertility. The reagents described include properly glycosylated human ZP3, ZP2, ZP1, glycosylated peptides thereof, fusion proteins such as green fluorescent protein—ZP3, non-covalent complexes of ZP2 with ZP3, fusion protein of ZP2-ZP3, solid phase materials such as agarose beads coated with binding agents such as ZP3, and other artificial zona. Methods are provided that, in many cases convert a complex biological event into a well defined biochemical binding event based on one or more of the reagents. Such methods are much easier to set up and monitor, allowing more convenient and inexpensive diagnostic testing for male fertility. The acrosome reaction is detected in other embodiments by virtue of quantitating one or more released substances.
    Type: Application
    Filed: August 1, 2002
    Publication date: August 7, 2003
    Inventors: Ting-Fung Chi, Zhiyong Lin, Ke-Wen Dong, Ming-I Hsu, Jr-Gang Cheng, Heming Zheng
  • Publication number: 20030080089
    Abstract: The present invention provides a method of patterning a substrate (30) according to a predetermined path, said method including forming a liquid film (134) on the substrate surface and directing laser energy from a laser (10) through the film (134) to etch the substrate surface, wherein etched material is carried away from the substrate surface via evaporation of the film during said etching.
    Type: Application
    Filed: February 21, 2002
    Publication date: May 1, 2003
    Inventors: Wen Dong Song, Minghui Hong, Yong Feng Lu
  • Publication number: 20030072548
    Abstract: A planar lightwave circuit includes at least one optical waveguide core, and at least one feature proximate the core having a stress-engineered property to balance stress and therefore minimize birefringence affecting the core. A protective passivation layer is formed over the core and the feature to be substantially non-interfering with the balanced stress provided by the feature. The stress balancing feature may be an overcladding layer formed over the core, doped to have a coefficient of thermal expansion approximately matched to that of an underlying substrate, to symmetrically distribute stress in an undercladding between the overcladding and the substrate, away from the core. The protective passivation layer is formed to have a coefficient of thermal expansion approximately matched to that of the overcladding. In one exemplary embodiment, the passivation layer is formed from silicon nitride. Related concepts of stress release grooves, and core overetching, are also disclosed.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Applicant: Scion Photonics, Inc.
    Inventors: Jyoti Kiron Bhardwaj, Robert James Brainard, Zi-Wen Dong, David Dougherty, Erik W. Egan, Niranjan Gopinathan, David K. Nakamoto, Thomas Thuan Nguyen, Sanjay M. Thekdi, Anantharaman Vaidyanathan, Hiroaki Yamada, Yingchao Yan
  • Publication number: 20030062347
    Abstract: This invention relates to a method and apparatus for deflashing integrated circuit (IC) packages by laser irradiation. The method and apparatus include two lasers scanning flash area for performing deflashing operation. CO2 laser is used to remove top layer of flash and YAG laser is used to remove the thin layer of flash remained after CO2 laser deflashing. CO2 laser deflashing and following YAG laser deflashing can effectively remove flash and avoid damage of heat sinks as well as leads and bars in the IC packages.
    Type: Application
    Filed: January 29, 2002
    Publication date: April 3, 2003
    Applicant: Data Storage Institute
    Inventors: Wen Dong Song, Minghui Hong, Chengwu An, Yong Feng Lu
  • Publication number: 20030048329
    Abstract: This invention relates to a method and apparatus for removing surface contamination on a flexible circuit 34 for an inkjet printer cartridge by pulsed laser irradiation in air. The contamination 3 around and inside the tiny inkjet nozzles 4 can be completely removed without any damage on the flexible circuit 34 by the laser irradiation. The cleaning mechanisms are laser-induced ablation of the contamination and fast momentum transferring from the laser beam to the contamination materials. Compared with chemical solution cleaning and plasma etching, this technique has high throughput and does not cause flexible circuit damage, due to the fact that there are no water and chemical solutions involved in the process. Meanwhile, the laser irradiation is only limited in a small area around the tiny inkjet nozzles 4. There is no laser interaction with the thin conductive circuit 34.
    Type: Application
    Filed: February 27, 2002
    Publication date: March 13, 2003
    Inventors: Minghui Hong, Wen Dong Song, Yongfeng Lu
  • Patent number: 6515573
    Abstract: A method and system for providing a magnetoresistive sensor for reading data from a recording media is disclosed. The method and system include providing at least one barrier layer and a free layer having at least one edge. The at least one edge of the free layer is adjacent to the at least one barrier layer. The free layer is ferromagnetic and has a low coercivity. The method and system also include providing at least one hard magnetic layer. The at least one hard magnetic layer has a coercivity greater than the free layer coercivity. The at least one barrier layer is disposed between the at least one hard magnetic layer and the free layer. The at least one barrier layer is sufficiently thin to allow tunneling of charge carriers between the at least one hard magnetic layer and the free layer.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: February 4, 2003
    Assignee: Read-Rite Corporation
    Inventors: Zi-Wen Dong, Zhupei Shi, Qunwen Leng
  • Patent number: 6511832
    Abstract: The present invention relates to the use of baculovirus RNA polymerase for the production of capped and polyadenylated transcripts in vivo and especially in vitro. More particularly, the purified RNA polymerase of the present invention may be used to produce in vitro transcription and/or in vitro transcription/translation kits.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: January 28, 2003
    Assignee: Texas A&M University System
    Inventors: Linda A. Guarino, Wen Dong, Jianping Jin
  • Publication number: 20030010761
    Abstract: The invention relates to a method and apparatus for decapping integrated circuit packages. The invention involves irradiating an IC package with laser radiation, typically in the UV-IR spectra and of short pulse duration. The irradiation results in ablation of the molding compound. The invention also provides real-time monitoring and process control of the decapping process and fluid-flow removal of ablation debris. Using the invention, decapping can be performed without causing damage to the internal IC structure. Furthermore, decapping in a liquid can prevent oxidisation of the molding compound by ambient air.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 16, 2003
    Inventors: Ming Hui Hong, Yong Feng Lu, Wen Dong Song, Zhihong Mai, Kok Tong Thiam, Chye Eng Soh
  • Publication number: 20030005633
    Abstract: There is provided is a process for preparation of synthesis gas, i.e. mixtures containing dihydrogen and oxides of carbon, from feedstocks containing methane and/or higher hydrocarbons having from about 2 to about 12 carbon atoms by an initial catalytic treatment of feedstock to provide a methane-containing gaseous mixture substantially free of compounds having 2 or more carbon atoms, and reforming the gaseous mixture at elevated temperatures using nickel-containing catalytic materials that are unusually active under mild conditions of conversion and resistant to deactivation. The process consists fundamentally in converting the higher hydrocarbon compounds to form a methane-containing gaseous mixture substantially free of compounds having 2 or more carbon atoms in an initial conversion zone containing a catalyst while controlling temperatures within the initial conversion zone to temperatures in a range of temperature downward from about 500° C. to about 300° C.
    Type: Application
    Filed: May 4, 2001
    Publication date: January 9, 2003
    Inventors: Alakananda Bhattacharyya, Wen-Dong Chang
  • Patent number: 6496334
    Abstract: In at least one embodiment, the apparatus of the invention is a read sensor comprising a shield, a sensor element, an extra shield between the shield and the sensor element, an extra gap between the shield and the sensor and adjacent the extra shield, and a gap layer between the sensor element and the extra shield. The sensor element is positioned in a sensor layer. With the extra shield adjacent to the sensor element and separated by only the relatively thin gap layer, high areal recording density and excellent instability of the sensor element is obtained. At the same time, by fabricating the extra shield to be not significantly wider than the sensor element, the potential for shorting is minimized by placing both the gap and the thicker extra gap between the sensor lead elements and the shield.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: December 17, 2002
    Assignee: Read-Rite Corportion
    Inventors: Song Pang, Lijun Tong, Zi-Wen Dong, Kevin Lin, Joyce Hsiang
  • Publication number: 20020181162
    Abstract: A disk drive write head (10) having a bottom pole (60), a first insulation layer (64) formed on the bottom pole (60), a coil (38) formed on the first insulation layer (64), a second insulation layer (66) formed on the coil (38), a write gap layer (76) formed on the second insulation layer (66), and a top pole (12) formed on the write gap layer (76), where the top pole (12) is substantially flat.
    Type: Application
    Filed: June 5, 2001
    Publication date: December 5, 2002
    Inventors: Yingjian Chen, James Wang, Qing He, Zi-Wen Dong, David J. Seagle
  • Publication number: 20020172982
    Abstract: The invention relates to methods for producing recombinant human zona pellucida protein (“rhZP3”) and glycosylated peptide having biological activity of binding to human spermatozoa. A human ovarian cell line is used to produce rhZP3 having a glycosylation pattern required for full biological activity. Methods of determining useful peptides with binding activity for human sperm and their syntheses, as well as using such peptides and proteins in therapeutics and diagnostics are discussed.
    Type: Application
    Filed: February 19, 1999
    Publication date: November 21, 2002
    Inventors: KE-WEN DONG, SERGIO OEHNINGER, WILLIAM E. GIBBONS
  • Publication number: 20020028470
    Abstract: The present invention provides a method to determine sperm activity comprising the steps of: (a) contacting an appropriate concentration of human zona pellucida protein 3 with an appropriate amount of sperm under conditions permitting the formation of a complex between the human zona pellucida protein 3 and the sperm; and (b) determining the complex form. The invention further provides a method to determine sperm activity comprising the steps of (a) contacting an appropriate concentration of human zona pellucida protein 3 with an appropriate amount of sperm under conditions permitting an acrosome reaction to occur; and (b) determining the extent of the acrosome reaction.
    Type: Application
    Filed: April 9, 2001
    Publication date: March 7, 2002
    Inventors: Ke-Wen Dong, Sergio C. Oehninger, William E. Gibbons
  • Patent number: 5939353
    Abstract: A direct, simplified and relatively salt-free process is described for making anionic, hydrotalcite-type pillared clay compositions which contain nickel, and their heat-treated derivatives. Compositions of the invention are manufactured from ractants which contain a relatively minor amount of metal salts or, preferably, contain essentially no metal salts. Preferred compositions made by the process form a number of new nickel-containing catalytic materials which are unusually resistant to deactivation, for example resistant to coke formation when used to catalyze chemical conversions of a hydrocarbyl compound with an oxygen-containing gas at elevated temperatures to form synthesis gas.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: August 17, 1999
    Assignee: BP Amoco Corporation
    Inventors: Alakananda Bhattacharyya, Wen-Dong Chang, Mark S. Kleefisch, Carl A. Udovich
  • Patent number: 5767040
    Abstract: A method and nickel-containing catalyst are disclosed for preparing synthesis gas by the reforming of a hydrocarbyl compound using an oxygen-containing compound.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Amoco Corporation
    Inventors: Alakananda Bhattacharyya, Wen-Dong Chang, Mark S. Kleefisch, Carl A. Udovich