Patents by Inventor Yiu Chung

Yiu Chung 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: 7144747
    Abstract: A method of thermally treating a substrate that has multiple layers is provided. A substrate layer that is covered on opposite sides is oxidized from side edges thereof toward a center thereof such that, via the following steps, a defined central portion is not oxidized. The substrate is heated in a process chamber to a prescribed treatment temperature. A hydrogen-rich water vapor is introduced into the process chamber for a specified period of time, wherein such introduction is effected prior to, during and/or after the step of heating the substrate to the prescribed temperature. After conclusion of the specified period of time, introduced into the process chamber is one of the group consisting of: dry oxygen, namely pure oxygen in the form of at least one of atomic O, molecular O2 and O3; a mixture of oxygen and an inert gas that does not chemically react with the layers of the substrate; an oxygen-containing compound that contains no water; and an oxygen-rich water vapor.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 5, 2006
    Assignee: Mattson Thermal Products GmbH
    Inventors: Hin Yiu Chung, Georg Roters
  • Patent number: 7137355
    Abstract: A self-cleaning litter apparatus that separates and extracts clumped litter waste material from litter material contained therein during use includes a chamber adapted to contain a quantity of litter material. The chamber is rotatable about a centrally disposed axis. A rake is disposed within the chamber. The rake is rotatable about an axis which is spaced apart from the chamber axis. A drive assembly is provided for simultaneously rotating the chamber about the chamber axis and for rotating the rake about the rake axis. The rake sweeps through the litter material while clumped litter waste material is directed toward the rake by rotation of the chamber to thereby separate clumped litter waste material from the litter material in the chamber, collect the separated clumped litter material in the rake and extract the separated clumped litter material from the chamber.
    Type: Grant
    Filed: October 15, 2005
    Date of Patent: November 21, 2006
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventor: Yiu Chung Wan
  • Publication number: 20060090151
    Abstract: A detailed placement process which optimizes cell placement with up to one hundred percent densities in a linear run time. The output from a conjugate-gradient coarse placement process is input to the detailed placement process. A dynamic programming technique is used to optimize cell placement by swapping cells between two or more rows. The search space is pruned beforehand. A greedy cleanup phase using an incremental row placer is used. Thereby, the detailed placement process handles congestion driven placements characterized by non-uniform densities expeditiously and efficiently.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 27, 2006
    Applicant: Synopsys, Inc.
    Inventors: Ronald Miller, William Nayor, Yiu-Chung Wong
  • Patent number: 7036103
    Abstract: A detailed placement process which optimizes cell placement with up to one hundred percent densities in a linear run time. The output from a conjugate-gradient coarse placement process is input to the detailed placement process. A dynamic programming technique is used to optimize cell placement by swapping cells between two or more rows. The search space is pruned beforehand. A greedy cleanup phase using an incremental row placer is used. Thereby, the detailed placement process handles congestion driven placements characterized by non-uniform densities expeditiously and efficiently.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: April 25, 2006
    Assignee: Synopsys, Inc.
    Inventors: Ronald Miller, William Naylor, Yiu-Chung Wong
  • Patent number: 7017519
    Abstract: A self-cleaning litter apparatus (30) comprises a base (31); a turntable (32), rotatably mounted within the base; a pan (33), for holding a quantity of animal litter, the pan being rotatably driven with the turntable; a rake assembly (36), providing a rake movable through the animal litter; a waste receptacle (37) for receipt of animal waste deposited in the litter, the receptacle providing a door (155) selectively moving to open and close the receptacle relative to movement of the rake assembly; a sensing mechanism (120) comprising a plurality of weight sensors (66), and an electrically activated track assembly (121) for determining the presence of an animal in the pan; a drive mechanism (170) for rotating the turntable, driving the rake assembly and operating movement of the door and, a controller (259) having a timer, and selectively providing power to the sensing mechanism.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: March 28, 2006
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventors: Richard Deasy, Yiu Chung Wan
  • Publication number: 20060057858
    Abstract: A method is presented in which a layer which is to be oxidized is processed, in a single-substrate process. The process temperature during the processing is recorded directly at the substrate or at a holding device for the substrate. The method includes introducing a substrate, which bears a layer to be oxidized uncovered in an edge region in a layer stack, into a heating device, passing an oxidation gas onto the substrate, heating the substrate to a process temperature, which is recorded during the processing via a temperature of a holding device which holds the substrate, and controlling the substrate temperature to a desired temperature or temperature curve during the processing.
    Type: Application
    Filed: July 26, 2003
    Publication date: March 16, 2006
    Inventors: Hin-Yiu Chung, Thomas Gutt
  • Patent number: 7007388
    Abstract: A hair trimming device is disclosed as including a first body part and a second body part, the first body part having a first end pivotally secured with a first end of the second body part for relative pivotal movement, the first body part including a brush portion at a second end distal from its first end, the brush portion including a recess, the second body part having a lever and a ruler pivotally engaged with each other, in which the ruler is receivable within the recess of the brush portion for holding hair between the brush portion and the ruler for trimming.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: March 7, 2006
    Assignee: King Tai Holdings Limited
    Inventor: Yiu Chung Wan
  • Publication number: 20050287571
    Abstract: The present invention relates to the discovery that an epididymis-specific defensin, EP2D, plays an important role in regulating sperm motility and therefore male fertility. Provided are methods for evaluating male fertility based on the level of EP2D bound to sperm, kits for evaluating male fertility, and methods for enhancing or suppressing fertility in a male by regulating the level of EP2D and the binding between sperm and EP2D.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 29, 2005
    Applicant: The Chinese University of Hong Kong
    Inventors: Hsiao Chan, Chenxi Zhou, Chuen Ng, Yiu Chung
  • Publication number: 20050261167
    Abstract: Provided herein is a composition that contains an effective amount of one or more compounds for treating, preventing, or ameliorating a disorder such as insomnia or another sleeping disorder and using the composition.
    Type: Application
    Filed: May 13, 2005
    Publication date: November 24, 2005
    Inventors: Hsiao Chan, Yu Gou, Dewi Rowlands, Yiu Chung
  • Publication number: 20050190752
    Abstract: A method for locating the incoming port of a MAC address is proposed. First, a forwarding table of each switch is retrieved. Then, a list of at least one MAC address owned by each switch is retrieved. Next, a port table of each switch is established. The MAC addresses in the forwarding table are compared with the MAC addresses owned by all switches. If one of the MAC addresses owned by switches matches the MAC address in the forwarding table, the port property of the corresponding port is changed to an interconnecting port. Finally, the target MAC address is compared with the MAC addresses in the forwarding table. If one of the MAC addresses in the forwarding table matches the target MAC address, and the port property of the corresponding port is end port, this port is the incoming port of the target MAC address.
    Type: Application
    Filed: December 30, 2004
    Publication date: September 1, 2005
    Inventors: Cheng-Mau Chiou, Jen-Tsung Shueh, Chih-Cheng Yang, Li-Chun Chao, Kai-Yiu Chung, Ting-Hang Chen
  • Publication number: 20050123629
    Abstract: The present invention discloses a novel medicament for treatment of climacteric syndrome of women, which is prepared from Radix Ginseng, Radix Angelicae Sinensis, Radix Astragali seu Hedysari, Radix Ophiopogonis, Fructus Ligustri Lucidi, Rhizoma Atractylodis Alba, Radix Paeoniae Alba, Poria cocos, Cortex Phellodendri, Rhizoma Ligustici Wallichi, Radix Glycyrrhizae, Radix Bupleuri, Radix Rehmanniae Praeparata, Herba Epimedii, Herba Menhae, Rhizoma Curculiginis, Rhizoma Anemarrhenge, and Herba Ecliptae by processing raw TCM, decocting, drying, grinding, and adding water and honey in a certain proportion to yield aqueous-honey-bolus.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 9, 2005
    Inventors: Hsiao Chan, Yulin Gou, Dewi Rowlands, Yiu Chung
  • Publication number: 20040209483
    Abstract: The aim of the invention is to stop the progression of a lateral oxidation of a layer of a multi-layer substrate at a defined point. To achieve this aim, the invention provides a method for thermally treating a substrate that comprises several layers, especially a semiconductor wafer, according to which a substrate layer that is covered from above and from below is oxidized from the lateral edges thereof to the center in such a manner that a defined center portion is not oxidized. The inventive method comprises the following steps: heating the substrate in a process chamber to a defined treatment temperature; introducing a hydrogen-rich water vapor into the process chamber for a defined period of time; and introducing dry oxygen or an oxygen-rich water vapor into the process chamber once the defined period of time has expired. The hydrogen-rich water vapor can be introduced into the process chamber either before, during and/or after the substrate is heated.
    Type: Application
    Filed: February 18, 2004
    Publication date: October 21, 2004
    Inventors: Hin Yiu Chung, Georg Roters
  • Publication number: 20040126213
    Abstract: A device for receiving plate-shaped objects, preferably semiconductor wafers, for the thermal treatment thereof, enabling the processing of wafers made of connecting semiconductors in a particularly simple manner. The inventive device offers high productivity and low risk of damage as a carrier has at least two recesses for respectively receiving an object. The recesses on the carrier can preferably be provided with covers. Preferably, support pins are provided for loading and unloading purposes. The carrier and the support pins can move in a vertical direction in relation to each other. A handling device for objects is also disclosed.
    Type: Application
    Filed: November 18, 2003
    Publication date: July 1, 2004
    Inventors: Arthur Pelzmann, Martin Drechsler, Jurgen Niess, Michael Grandy, Hin Yiu Chung, Paul Mantz, Ottmar Graf
  • Publication number: 20040078770
    Abstract: A detailed placement process which optimizes cell placement with up to one hundred percent densities in a linear run time. The output from a conjugate-gradient coarse placement process is input to the detailed placement process. A dynamic programming technique is used to optimize cell placement by swapping cells between two or more rows. The search space is pruned beforehand. A greedy cleanup phase using an incremental row placer is used. Thereby, the detailed placement process handles congestion driven placements characterized by non-uniform densities expeditiously and efficiently.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 22, 2004
    Applicant: SYNOPSYS, INC.
    Inventors: Ronald Miller, William Naylor, Yiu-Chung Wong
  • Patent number: D503419
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: March 29, 2005
    Assignee: Concord Camera Corp.
    Inventor: Yiu Chung Wan
  • Patent number: D508636
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: August 23, 2005
    Inventors: Kwok Kuen So, Yiu Chung Wan
  • Patent number: D524492
    Type: Grant
    Filed: October 15, 2005
    Date of Patent: July 4, 2006
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventors: Yiu Chung Wan, Allan Ross
  • Patent number: D477639
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: July 22, 2003
    Assignee: Sonera International Limited
    Inventor: Chi Yiu Chung
  • Patent number: D495447
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: August 31, 2004
    Assignee: King Tai Holdings Limited
    Inventor: Yiu Chung Wan
  • Patent number: D408371
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: April 20, 1999
    Inventor: Benson Yiu Chung Fung