Patents by Inventor Keung Lee

Keung Lee 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: 20080288989
    Abstract: A computer software product, methods and apparatus for improved video communications are provided. In one embodiment, an apparatus is provided that is configured to send v-mail messages. The v-mail messages contain a video stream that is stored on a second device on a network. In one embodiment, the second device is configured to associate multiple video streams to a thread and allow users access to stored video content and associated files. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.
    Type: Application
    Filed: May 14, 2007
    Publication date: November 20, 2008
    Inventors: Yu "Brian" Zheng, Kan Wang, Calvin Chee Keung Lee
  • Patent number: 7449103
    Abstract: An ebullated bed hydroprocessing system, and also a method for upgrading a pre-existing ebullated bed hydroprocessing system, involves introducing a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into an ebullated bed reactor. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. The improved ebullated bed hydroprocessing system includes at least one ebullated bed reactor that employs both a porous supported catalyst and the colloidal or molecular catalyst to catalyze hydroprocessing reactions involving the feedstock and hydrogen. The colloidal or molecular catalyst provides catalyst in what would otherwise constitute catalyst free zones within the ebullated bed hydroprocessing system.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: November 11, 2008
    Assignee: Headwaters Heavy Oil, LLC
    Inventors: Roger K. Lott, Lap-Keung Lee
  • Publication number: 20080193345
    Abstract: An ebullated bed hydroprocessing system, and also a method for upgrading a pre-existing ebullated bed hydroprocessing system, involves introducing a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into an ebullated bed reactor. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. The improved ebullated bed hydroprocessing system includes at least one ebullated bed reactor that employs both a porous supported catalyst and the colloidal or molecular catalyst to catalyze hydroprocessing reactions involving the feedstock and hydrogen. The colloidal or molecular catalyst provides catalyst in what would otherwise constitute catalyst free zones within the ebullated bed hydroprocessing system.
    Type: Application
    Filed: April 18, 2008
    Publication date: August 14, 2008
    Applicant: HEADWATERS HEAVY OIL, LLC
    Inventors: Roger K. Lott, Lap-Keung Lee
  • Patent number: 7364490
    Abstract: A toy vehicle including: a housing defining an interior section of the vehicle; a motor mounted in the housing; a drive shaft operatively connected to the motor and extending through an opening in the housing; and a propeller or wheel mounted on an end portion of the drive shaft. The drive shaft includes a polygon shaped driving element that is countersunk into a rear portion of the propeller/wheel for providing reliable transfer of power from the motor to the propeller/wheel.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: April 29, 2008
    Assignee: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Publication number: 20080059584
    Abstract: A method for sharing bookmarks by receiving client bookmarks at a server and selectively sharing the client bookmarks with other clients.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 6, 2008
    Inventors: Cindy Lam, Calvin Wu, Ka Keung Lee
  • Publication number: 20080053871
    Abstract: An expanded bed hydroprocessing system and related method includes at least one expanded bed reactor that employs a solid catalyst to catalyze hydroprocessing reactions involving hydrogen and a high molecular weight hydrocarbon feedstock (e.g., a Fischer-Tropsch wax) that is contaminated with solid particulates. Hydroprocessing the high molecular weight hydrocarbon feedstock in an expanded bed reactor results in formation of a hydroprocessed material from the hydrocarbon feedstock, while eliminating the risk of plugging of the supported catalyst bed by the solid particulates as compared to a reactor including a stationary catalyst bed.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Applicant: HEADWATERS NANOKINETIX, INC.
    Inventors: Lap-Keung Lee, Lawrence M. Abrams
  • Patent number: 7171525
    Abstract: A system including a multi-port storage device (e.g., a disk drive) and at least two users, each user coupled to a port of the storage device by a serial link. The storage device has an operational portion and an interface (including arbitration circuitry) between its ports and the operational portion. In response to a set of competing priority bids from the users, the arbitration circuitry grants one bid (including by sending an acknowledgement to the successful bidder) and preferably holds each non-granted competing bid without sending any notification to the unsuccessful bidder until the successful bidder sends a deselect signal. The system can be a RAID system including at least two disk drives and at least two controllers, where at least one drive is a multi-port device shared by at least two of the controllers. Preferably, each priority bid and deselect signal is a primitive code (e.g., an ordered sequence of a 10-bit control character and three 10-bit data characters in SATA format).
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: January 30, 2007
    Assignee: Silicon Image, Inc.
    Inventors: Robert D. Norman, Frank Sai-Keung Lee
  • Publication number: 20060263678
    Abstract: A battery pack for high performance, radio-controlled toy vehicles, such as high speed vehicles with highly sensitive steering and/or driving (known as “digital proportional”) or other types of high performance toy vehicles/features requiring high voltage/high current. The battery pack provides improved performance for the toy, an improved layout of the pack/battery arrangement, improved safety features, and improved piracy prevention.
    Type: Application
    Filed: July 27, 2006
    Publication date: November 23, 2006
    Applicant: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Patent number: 7088028
    Abstract: A rotor assembly for an electric motor, including: a rotor shaft, an armature, wire windings and a commutator, wherein the rotor assembly further includes a ring cap directly connected with the commutator. The ring cap includes chip capacitors soldered on a printed circuit board through a Surface Mount Device (SMD) technique. The ring cap serves as a reservoir for absorption of any noise/sound generated from rotation of the commutator in a DC motor around its brushes. The invention enables compliance with current and future EMC requirements in, for example, the automotive industry.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: August 8, 2006
    Assignee: Microplex NTP, Ltd.
    Inventor: Keung Lee
  • Publication number: 20050264126
    Abstract: A rotor assembly for an electric motor, including: a rotor shaft, an armature, wire windings and a commutator, wherein the rotor assembly further includes a ring cap directly connected with the commutator. The ring cap includes chip capacitors soldered on a printed circuit board through a Surface Mount Device (SMD) technique. The ring cap serves as a reservoir for absorption of any noise/sound generated from rotation of the commutator in a DC motor around its brushes. The invention enables compliance with current and future EMC requirements in, for example, the automotive industry.
    Type: Application
    Filed: August 27, 2004
    Publication date: December 1, 2005
    Applicant: Microplex NTP, Ltd.
    Inventor: Keung Lee
  • Publication number: 20050241991
    Abstract: An ebullated bed hydroprocessing system, and also a method for upgrading a pre-existing ebullated bed hydroprocessing system, involves introducing a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into an ebullated bed reactor. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. The improved ebullated bed hydroprocessing system includes at least one ebullated bed reactor that employs both a porous supported catalyst and the colloidal or molecular catalyst to catalyze hydroprocessing reactions involving the feedstock and hydrogen. The colloidal or molecular catalyst provides catalyst in what would otherwise constitute catalyst free zones within the ebullated bed hydroprocessing system.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 3, 2005
    Applicant: Headwaters Heavy Oil, LLC
    Inventors: Roger Lott, Lap-Keung Lee
  • Publication number: 20050241993
    Abstract: Methods and systems for hydroprocessing heavy oil feedstocks to form an upgraded material involve the use of a colloidal or molecular catalyst dispersed within a heavy oil feedstock, a hydrocracking reactor, and a hot separator. The colloidal or molecular catalyst promotes hydrocracking and other hydroprocessing reactions within the hydrocracking reactor. The catalyst is preferentially associated with asphaltenes within the heavy oil feedstock, which promotes upgrading reactions involving the asphaltenes rather than formation of coke precursors and sediment. The colloidal or molecular catalyst overcomes problems associated with porous supported catalysts in upgrading heavy oil feedstocks, particularly the inability of such catalysts to effectively process asphaltene molecules. The result is one or more of reduced equipment fouling, increased conversion level, and more efficient use of the supported catalyst if used in combination with the colloidal or molecular catalyst.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 3, 2005
    Applicant: Headwaters Heavy Oil, LLC
    Inventors: Roger Lott, Lap-Keung Lee
  • Publication number: 20050241992
    Abstract: A fixed bed hydroprocessing system, and also a method for upgrading a pre-existing fixed bed hydroprocessing system, involves preliminarily upgrading a heavy oil feedstock in one or more slurry phase reactors using a colloidal or molecular catalyst and then further hydroprocessing the upgraded feedstock within one or more fixed bed reactors using a porous supported catalyst. The colloidal or molecular catalyst is formed by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst in situ. Asphaltene or other hydrocarbon molecules otherwise too large to diffuse into the pores of the fixed bed catalyst can be upgraded by the colloidal or molecular catalyst.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 3, 2005
    Inventors: Roger Lott, Lap-Keung Lee, Peter Quinn
  • Patent number: 6942540
    Abstract: A toy vehicle including: a housing defining an interior section of the vehicle; a motor mounted in the housing; a drive shaft operatively connected to the motor and extending through an opening in the housing; and a propeller or wheel mounted on an end portion of the drive shaft. The drive shaft includes a polygon shaped driving element that is countersunk into a rear portion of the propeller/wheel for providing reliable transfer of power from the motor to the propeller/wheel.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: September 13, 2005
    Assignee: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Publication number: 20050180335
    Abstract: Network analysis in a network management system for a data network is improved by mapping the communication paths established in the network. Queries are sent by the network management system to each network element in the network. Queries are triggered by events within the network, for example, after notification by a network element that a communication path is being set up. Each query sent by the network management system requests certain connection and topology information from the network elements. Using this information, the network management system constructs the overall network topology and performs a path analysis to map completely each communication path through the network. When the communication path mapping is complete, various types of analyses are performed using the communication path information. These analyses include but are not limited to network capacity analysis, network performance analysis, and network fault analysis.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 18, 2005
    Inventor: Ho-Keung Lee
  • Patent number: 6919065
    Abstract: A particulate supported noble metal phase-controlled catalyst material having 5-1000 ?m surface area of 50?500 m2/gm is provided for use in direct catalytic production of hydrogen peroxide (H2O2) product from hydrogen and oxygen-containing feedstreams. The catalyst is made by depositing phase controlled crystals of a noble metal such as palladium on a suitable particulate support material such as carbon black, by utilizing a precursor solution of the metal and a suitable control ionic polymer having molecular weight of 300-8000 such as sodium polyacrylate in a selected metal to polymer molar ratio of 1:0.1 to 1:10, which procedure provides desired phase control of the noble metal atoms to form widely dispersed minute noble metal crystals on the support material. The invention includes methods for making the catalyst, and also a process for utilizing the catalyst to directly produce high yields of hydrogen peroxide (H2O2) product from hydrogen and oxygen-containing gaseous feedstreams.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: July 19, 2005
    Assignee: Hydrocarbon Technologies, Inc.
    Inventors: Bing Zhou, Lap-Keung Lee
  • Patent number: 6881605
    Abstract: There is disclosed a method of forming a card embedded with an integrated circuit (IC) and an antenna coil, which method including the steps of (a) embedding an antenna coil onto a core sheet; (b) laminating the core sheet with a number of outer sheets to form a laminated panel; (c) forming a first cavity in the laminated panel to expose part of the antenna coil; (d) pulling out two ends of the antenna coil from the core sheet; and (e) securing the integrated circuit with the antenna coil, e.g. by soldering or thermo compression bonding.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: April 19, 2005
    Assignee: Billion Apex Limited
    Inventors: Chi Keung Lee, Kwok Lam Kwan
  • Patent number: 6875409
    Abstract: A bi-functional oxidation catalyst and process for catalytic oxidation and removal of nitrogen oxides (NOx) from combustion gases derived from combustion of carbonaceous fuels such as coal, oil, or natural gas. The bi-functional catalyst includes adsorption and oxidation function metal oxides provided in adjacent close intimate contact by utilizing a binding agent, such as carboxylic acid and calcining to provide a metal oxide complex having a crystalline form. Such nitrogen oxides (NOx) contained in the combustion gases are initially catalytically oxidized to at least about 50 vol % NO2 and some higher oxides by contact with the bi-functional catalyst at 170-550° F. temperature. The combustion gas containing the partially oxidized NOx is then preferably further chemically oxidized by being mixed with a chemical oxidant such as ozone (O3) in a molar ratio of the chemical oxidant3 to NOx in the range of 0.5:1-1.2:1 to produce higher oxides of nitrogen such as substantially N2O5.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: April 5, 2005
    Assignee: Hydrocarbon Technologies, Inc.
    Inventors: Bing Zhou, Lap-Keung Lee, Naresh J. Suchak
  • Publication number: 20050064785
    Abstract: A battery pack for high performance, radio-controlled toy vehicles, such as high speed vehicles with highly sensitive steering and/or driving (known as “digital proportional”) or other types of high performance toy vehicles/features requiring high voltage/high current. The battery pack provides improved performance for the toy, an improved layout of the pack/battery arrangement, improved safety features, and improved piracy prevention.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 24, 2005
    Applicant: New Bright Industrial Co., Ltd.
    Inventor: Keung Lee
  • Patent number: D558403
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: December 25, 2007
    Inventor: Chi Keung Lee