Patents by Inventor San Yuan

San Yuan 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: 20080146112
    Abstract: Microwave irradiation treatment is used to enhance the luminescent efficiency by improving surface morphology of the illuminating phosphors. The invention modifies the phosphor particles from the sheet-like shape into the spherical shape and so as to exhibit better crystalline property, thus it may provide for the fabrication of the phosphors with high luminescent efficiency for the optoelectronic devices.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Shu-Ping Lee, San-Yuan Chen, Kuan-Ting Kuo, Chu-Chi Ting, Yu-Heng Hsieh
  • Patent number: 7330336
    Abstract: A magnetic read/write head having a heating element to induce a desired amount of thermal protrusion in the read and write elements to control the fly height of the read and write elements over a magnetic medium. The heating element is connected with circuitry that provides an electrical bias (voltage or current) that switches polarity in order to prevent electromigration, thereby greatly increasing the life of the heating element. The polarity of the heating element can be switched upon the occurrence of a predetermined event such as between read or write events or upon activating deactivating the disk drive device or could be performed at regular, predetermined time intervals. The dual polarity bias could also be provided by applying an AC bias to the heating element.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: February 12, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B. V.
    Inventors: Jih-Shiuan Luo, Samuel Wei-san Yuan
  • Publication number: 20070110902
    Abstract: This invention relates to a method for forming a multi-layer coating, comprising sequentially applying a primer surfacer, a basecoat, and a clear coat composition on an automotive substrate in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step, wherein the primer surfacer comprises: a film forming binder, a volatile organic liquid carrier, and pigment(s); and the binder contains about: (a) about 30 to 80% by weight, based on the weight of the binder, of a hydroxyl functional polyester resin; (b) about 10 to 30% by weight, based on the weight of the binder, of a crosslinking agent selected from the group consisting of a melamine resin, a blocked polyisocyanate resin, or a mixture thereof; (c) about 10 to 40% by weight, based on the weight of the binder, of a dispersed graft polymer comprising a non-crosslinked core of acrylic polymer which is substantially non-soluble in non-polar organic solvent and, grafted to the core, one end of an acrylic stabil
    Type: Application
    Filed: October 5, 2006
    Publication date: May 17, 2007
    Inventors: Jeffery Johnson, San Yuan
  • Publication number: 20070098926
    Abstract: This invention relates to a method for forming a multi-layer coating on a vehicle body, comprised of applying primer coating, base coating, and clear coat layers in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer layer comprises a film-forming binder (a) a caprolactone-modified linear acrylic polymer; and (b) an aminoplast resin crosslinking agent, wherein the composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.
    Type: Application
    Filed: October 5, 2006
    Publication date: May 3, 2007
    Inventors: Peter Uhlianuk, Delson Trindade, San Yuan
  • Patent number: 7133241
    Abstract: A method and apparatus for optimizing data record quality on a disk for a pair of read and write heads, in which the write head is bigger, by adaptively varying linear and track density of overlapping recorded tracks to achieve a target storage capacity. In the method, target storage capacity and radial writing direction are selected. Read and write widths of heads are determined. A linear density and offset distance pairing for optimizing record quality at target storage capacity is determined, wherein offset distance is less than write width but greater than read width. The write head writes a track at the linear density, is offset in the radial direction by the offset distance, and the offset distance is stored. The write head writes a new track at the linear density. Offsetting, storing offset, and writing a new track are repeated until desired data is written into a cluster.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: November 7, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Xiaodong Che, Wen-Chien David Hsiao, Yansheng Luo, Xiaoyu Sui, Samuel Wei-san Yuan
  • Patent number: 7115796
    Abstract: The invention provides a transgenic pig having incorporated into its genome a HSP70 gene or fragment thereof, whereby the transgenic pig overexpresses HSP70. The transgenic pig of the invention can be used in the production of HSP in large quantities, as a xenograft source for transplantation and as an animal model close to human for illustrating the protective roles of HSP. Furthermore, the transgenic pig of the invention has a better meat quality and exhibits an increased growth rate and a reduced backfat thickness.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: October 3, 2006
    Assignee: Animal Technology Institute
    Inventors: Bor-Show Tzang, Ching-Fu Tu, Wen-Chuan Lee, Ming-Yu Chen, San-Yuan Huang, Jyh-Hung Lin
  • Patent number: 7085100
    Abstract: A magnetic head having improved overwrite capabilities and reduced fringing fields are described along with methods of making the same. The magnetic head has a first pole piece and a second pole piece. The first pole piece includes a first bottom pole piece layer, a pedestal portion formed over the first bottom pole piece layer, and a notched top pole portion formed over the pedestal portion. A gap layer separates the second pole piece from the notched top pole portion. The pedestal portion has a first saturation magnetization MS1 and the top pole portion has a second saturation magnetization MS2 that is greater than the first saturation magnetization MS1. The top pole portion has a substantially planar top surface over which a portion of the gap layer and the second pole piece are formed.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: August 1, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Tom King Harris, III, Wen-chien David Hsiao, Gautam Mohan Khera, David Kaimon Lee, Edward Hin Pong Lee, Hugo Alberto Emilio Santini, Samuel Wei-san Yuan
  • Patent number: 7079355
    Abstract: A method for producing a magnetic transducer with an inductive write head having a multilayer coil with a high aspect ratio and a short yoke is disclosed. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: July 18, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Richard D. Hsiao, Quang Le, Edward Hin Pong Lee, Paul Phong Nguyen, Son Van Nguyen, Denny D. Tang, Bradley Douglas Webb, Patrick Rush Webb, Samuel Wei-san Yuan
  • Patent number: 7035047
    Abstract: A magnetic head having read and write elements is provided according to one embodiment. The head includes a substrate. An undercoating is coupled to the substrate. The undercoating has a preferred thickness of between about 1.5 and 0.5 microns or less in a direction perpendicular to the planar surface of the substrate engaging the undercoating. Preferably, the undercoating is reduced to a desired thickness during fabrication using chemical mechanical polishing. The undercoating is constructed of a material having a thermal conductivity greater than that of amorphous Al2O3. An electric contact pad is operatively coupled to a layer positioned between the pad and the undercoating. Electric contact pads of read and write elements are preferably separated from the undercoating by insulation planarization layers. A write element is coupled to the undercoating. The write element has an electrically conductive coil.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: April 25, 2006
    Assignee: International Business Machines Corporation
    Inventors: Wen-Chien Hsiao, Peter Beverley Powell Phipps, Yong Shen, John Jaekoyun Yang, Samuel Wei-san Yuan
  • Publication number: 20060079637
    Abstract: This invention relates to a primer composition having a low VOC content useful in the manufacture of automobiles and trucks in which the film forming binder contains: a) a cycloaliphatic or polycycloaliphatic epoxy compound; b) an alkoxy silane or silicate reactive diluent; and, c) a curing catalyst to catalyze the reaction between (a) and (b). These primers are characterized in that the curing or crosslinking reaction is presumably based, at least in part, on a ring opening polymerization reaction between the epoxy structures of (a) and silanol groups formed on (b) in the presence of atmospheric moisture and acid. Curing chiefly utilizing a ring opening reaction of the forgoing epoxy structures with the forgoing reactive diluents not only avoids volatile compounds from being generated and released into the atmosphere during the curing process, but also keeps the viscosity low enough for practical application such as by spraying.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 13, 2006
    Inventor: San Yuan
  • Publication number: 20060025522
    Abstract: This invention relates to a thermosetting primer composition having a low VOC content useful in the manufacture of automobiles and trucks in which the film-forming binder comprises a thermal polymerization initiator and an addition-polymerizable ethylenically unsaturated monomer which serves a dual function of solvent and binder polymer formed in situ on thermal curing to deliver low VOC and desired rheological and physical properties. These primers are especially useful in reducing emissions, while also meeting today's performance requirements, such as ease of application and excellent physical properties such as corrosion resistance, a high level of adhesion to primed and unprimed substrates, and provide a surface to which conventional automotive topcoats will adhere.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: Jeffery Johnson, Donald Paquet, Peter Uhlianuk, San Yuan
  • Publication number: 20060025534
    Abstract: This invention relates to an improved solvent based high solids thermosetting coating composition having a low VOC content useful in the manufacture of automobiles and trucks comprising a film-forming binder, where the improvement is the inclusion in the binder of an addition-polymerizable ethylenically unsaturated compound and an effective amount of thermal free radical initiator to effect polymerization of the addition-polymerizable component using heat. The addition-polymerizable compound serves a dual function of solvent and auxiliary crosslinking agent for the coating system to deliver low VOC and desired rheological and physical properties. These coatings are especially useful in reducing emissions, while also meeting today's performance requirements for automotive topcoats, such as ease of application and excellent durability and appearance. No actinic radiation is needed to effect polymerization of the addition-polymerizable compound.
    Type: Application
    Filed: July 30, 2004
    Publication date: February 2, 2006
    Inventors: Jeffery Johnson, Donald Paquet, Peter Uhlianuk, San Yuan
  • Publication number: 20050112648
    Abstract: The present invention provides a method of screening pigs to identify those which have a genetic predisposition to have a thinner or thicker backfat thickness by assaying the pattern of the five single nucleotide polymorphisms in the HSP70.2 gene that is associated with backfat thickness.
    Type: Application
    Filed: October 5, 2004
    Publication date: May 26, 2005
    Inventors: En-Chung Lin, Ming-Yu Chen, San-Yuan Huang, Hui-Liang Tsou, Wen-Chuan Lee
  • Publication number: 20050085569
    Abstract: A curable coating composition with holdout capability, and methods of use thereof, useful in providing a chip resistant two-tone finish in a reduced number of coating steps and curing cycles, which contains a hydroxyl-functional polyester resin, or a plurality of hydroxyl-functional polyester resins, with an average hydroxyl functionality of at least 2.1, a hydroxyl number of 75 to 400 mg KOH/g, a number average molecular weight of 1,000 to 10,000, an acid number of 1 to 30; a curing agent; and, a barium sulfate pigment This invention is also directed to method for coating a substrate with the above coating composition.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 21, 2005
    Inventors: San Yuan, Mary Haslett
  • Publication number: 20050084628
    Abstract: A method for achieving a multiple colored two-tone finish on a variety of substrates, by (1) applying a holdout capable chip resistant primer coating composition to an accent area of a substrate, typically previously painted with an electrodeposition primer composition, (2) applying a primer surfacer coating composition to an adjacent non-accent area of the substrate, (3) applying an accent color basecoating composition wet-on-wet to the chip resistant primer coating composition in the accent area, (4) curing the composite coated substrate in a first bake, (5) covering the accent area with a protective membrane, (6) applying a main color basecoating composition over the unmasked area, (7) removing the protective membrane from the accent area, (8) applying a clear coating composition wet-on-wet to all faces of the substrate, and then (9) curing the composite two-toned coated substrate in a second bake, is claimed.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 21, 2005
    Inventors: Robert Williams, San Yuan, Mary Haslett
  • Patent number: 6859347
    Abstract: A magnetic transducer including an electrically conductive shield (ECS) which is disposed between the substrate and first magnetic shield is described. The ECS is preferably embedded in an insulating undercoat layer. The ECS is preferably electrically isolated from the magnetic sensor element and is externally connected to a ground available in the disk drive through the arm electronics. Two alternative ways for connecting the ECS to a ground are described. In one embodiment which is only effective with single-ended input type arm electronics, the ECS is connected to a ground through a via to a lead pad for the read head which is connected to the ground of the arm electronics. In a second and more preferred embodiment a separate lead pad is included on the head to allow the ECS to be connected to electronic or case ground when the head is installed in the arm. The extent of the ECS should be sufficiently large to cover the read head portion of the transducer, i.e.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: February 22, 2005
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Richard Hsiao, Klaas Berend Klaassen, Edward Hing Pong Lee, Timothy J. Moran, Vladimir Nikitin, Michael Paul Salo, Samuel Wei-San Yuan
  • Patent number: 6852549
    Abstract: The present invention relates to a method for manufacturing a ferroelectric field-effect transistor, particularly to a ferroelectric field-effect transistor with a metal/ferroelectric/insulator/semiconductor (MFIS) gate capacitor structure. The method comprises steps of depositing a bismuth layered ferroelectric film on the insulator buffered Si, after a high-temperature thermal treatment, depositing an upper electrode on the bismuth layered ferroelectric film.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 8, 2005
    Assignee: National Chiao Tung University
    Inventors: San-Yuan Chen, Chia-Liang Sun, Albert Chin
  • Patent number: 6804879
    Abstract: A method for producing a magnetic transducer with a inductive write head having a multilayer coil with a high aspect ratio and a short yoke is provided. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: October 19, 2004
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Richard D. Hsiao, Quang Le, Edward Hin Pong Lee, Paul Phong Nguyen, Son Van Nguyen, Denny D. Tang, Bradley Douglas Webb, Patrick Rush Webb, Samuel Wei-san Yuan
  • Publication number: 20040190196
    Abstract: Applicants disclose a method for producing a magnetic transducer with a inductive write head having a multilayer coil with a high aspect ratio and a short yoke. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 30, 2004
    Inventors: Richard D. Hsiao, Quang Le, Edward Hin Pong Lee, Paul Phong Nguyen, Son Van Nguyen, Denny D. Tang, Bradley Douglas Webb, Patrick Rush Webb, Samuel Wei-san Yuan
  • Publication number: 20040080866
    Abstract: Applicants disclose a method for producing a magnetic transducer with a inductive write head having a multilayer coil with a high aspect ratio and a short yoke. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 29, 2004
    Inventors: Richard D. Hsiao, Quang Le, Edward Hin Pong Lee, Paul Phong Nguyen, Son Van Nguyen, Denny D. Tang, Bradley Douglas Webb, Patrick Rush Webb, Samuel Wei-san Yuan