Patents by Inventor Kei Chan

Kei Chan 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: 20240366735
    Abstract: Ocular antimicrobial compositions and methods and method of use thereof are provided. The compositions incorporate photoactive heterojunction materials can be incorporated into a suitable carrier, alone or in combination with an enzyme capable of generating ROS upon contact with the eye for the treatment of ocular conditions. The method includes contacting the eye of a subject in need thereof, the subject has or has been diagnosed with microbial keratitis, with an effective amount of the disclosed composition. The method further includes contacting the composition in the subject's eye with near infrared radiation (NIR).
    Type: Application
    Filed: May 2, 2024
    Publication date: November 7, 2024
    Inventors: Yau Kei Chan, Liangyu Zhou
  • Publication number: 20240044886
    Abstract: The present invention is directed to biochemical assay methods, which re-use a hapten-immobilized test probe and reagents for quantitating an analyte or measuring kinetic binding in different samples, anywhere from about 3 to 20 times, while maintaining acceptable assay performance. The methods use a conjugate solution either comprising (i) an anti-hapten antibody and a capture antibody against an analyte, or (ii) an anti-hapten antibody and streptavidin, in each cycle and regenerate the hapten-coated test probe by dipping the test probe in an acidic solution having pH about 1-4, optionally further dipping in a DMSO solution, after the completion of each cycle of reaction. The robustness of the hapten-immobilized solid phase allows utilization of denaturation reagents for efficient elution of the immune complexes after each cycle without compromising the binding activity of the hapten on the solid phase.
    Type: Application
    Filed: October 7, 2020
    Publication date: February 8, 2024
    Inventors: Robert F. ZUK, Pu LI, Jackie Shek Kei CHAN, Indrani CHAKRABORTY
  • Patent number: 10766980
    Abstract: The invention relates to a process for the production of ultra high molecular weight polyethylene in the presence of a catalyst system that comprises (I) the solid reaction product obtained from the reaction of a) a hydrocarbon solution containing 1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and 2) an organic oxygen containing titanium compound and b) an aluminium compound of the formula AlRaX(3-a) where R is a hydrocarbylgroup containing (3-10) carbon atoms, X is an halogenide and 0<a<3 and (I!) an aluminium compound having the formula AlR3 in which R is a wherein the molar ratio of aluminium from (b): titanium from (a) is higher than 3:1 and the average particle size of the catalyst ranges between 0.1 ?m and 1.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 8, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Remy Peter Theresia Smeets, Nicolaas Hendrika Friederichs, Robert Lap Key Chan
  • Patent number: 10472439
    Abstract: The present invention relates to a catalyst system for the production of polyethylene comprising: I) the reaction product obtained by reacting a) a hydrocarbon solution comprising: i. a magnesium-containing compound selected from an organic oxygen-containing magnesium compound and/or a halogen-containing magnesium compound; and ii. an organic oxygen-containing titanium compound wherein the molar ratio of magnesium:titanium is lower than 3:1; and b) an organo aluminium halide having the formula AlRnX3-n in which R is a hydrocarbon moiety containing 1-10 carbon atoms, X is a halogen and 0<n<3; II) an aluminium compound having the formula AlR?3, in which R? is a hydrocarbon moiety containing 1-10 carbon atoms; and III) one or more of an electron donor selected from the group of 1,2-dialkoxy hydrocarbon compounds wherein the molar ratio of supplied organo aluminium halide I)b) to supplied titanium in I)a) in the preparation of I) is between 5.0 and 7.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 12, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Geert Johannes Marinus Meppelder, Johannes Julian Matthias Kruck, Eric Johannes Cornelia Janssen, Robert Lap Key Chan
  • Publication number: 20190248933
    Abstract: The invention relates to a process for the production of ultra high molecular weight polyethylene in the presence of a catalyst system that comprises (I) the solid reaction product obtained from the reaction of a) a hydrocarbon solution containing 1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and 2) an organic oxygen containing titanium compound and b) an aluminium compound of the formula AIRaX(3-a) where R is a hydrocarbylgroup containing (3-10) carbon atoms, X is an halogenide and 0<a<3 and (I!) an aluminium compound having the formula AIR3 in which R is a wherein the molar ratio of aluminium from (b): titanium from (a) is higher than 3:1 and the average particle size of the catalyst ranges between 0.1 ?m and 1.
    Type: Application
    Filed: October 24, 2017
    Publication date: August 15, 2019
    Inventors: Remy Peter Theresia Smeets, Nicolaas Hendrika Friederichs, Robert Lap Key Chan
  • Publication number: 20180030176
    Abstract: The present invention relates to a catalyst system for the production of polyethylene comprising: I) the reaction product obtained by reacting a) a hydrocarbon solution comprising: i. a magnesium-containing compound selected from an organic oxygen-containing magnesium compound and/or a halogen-containing magnesium compound; and ii. an organic oxygen-containing titanium compound wherein the molar ratio of magnesium: titanium is lower than 3:1; and b) an organo aluminium halide having the formula AlRnX3-n in which R is a hydrocarbon moiety containing 1-10 carbon atoms, X is a halogen and 0<n<3; II) an aluminium compound having the formula AlR?3, in which R? is a hydrocarbon moiety containing 1-10 carbon atoms; and III) one or more of an electron donor selected from the group of 1,2-dialkoxy hydrocarbon compounds wherein the molar ratio of supplied organo aluminium halide I)b) to supplied titanium in I) a) in the preparation of I) is between 5.0 and 7.
    Type: Application
    Filed: March 10, 2016
    Publication date: February 1, 2018
    Inventors: Geert Johannes Marinus Meppelder, Johannes Julian Matthias Kruck, Eric Johannes Cornelia Janssen, Robert Lap Key Chan
  • Publication number: 20170362291
    Abstract: Methods of enhancing production of cytokines such as IL-10 by, for example, optimizing refolding conditions, are described. The methods provide an efficient, cost-effective means of manufacturing IL-10 on a commercial scale.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 21, 2017
    Inventors: Jackie Shek Kei Chan, Brett Harold Jorgensen, John Brian Mumm
  • Publication number: 20170226242
    Abstract: The invention relates to a catalyst composition for the polymerization of olefins, in which the catalyst is produced using a metal-containing compound having the formula (I): MeRnX3-n (I), in which X is a halogen, Me is a metal of group III of Mendelejev's Periodic Table of Elements, R is a hydrocarbon moiety comprising>2 carbon atoms, and n is 1?n<3, or a dimer of a compound of formula (I); and the average particle size of the catalyst as reflected by D50 (measured according to ISO13320) is between 0.5 and 4.5 ???. The invention also relates to a process for production of said catalyst composition. The invention further relates to ultra-high molecular weight polyethylene produced via a polymerization process using said catalyst composition.
    Type: Application
    Filed: October 12, 2015
    Publication date: August 10, 2017
    Inventors: Remy Peter Theresia Smeets, Robert Lap Key Chan, Nicolaas Hendrika Friederichs
  • Patent number: 8954606
    Abstract: A method of synchronizing a mobile device with a computing terminal, comprising in a first stage, synchronizing between a server and one of the mobile device and the computing terminal, and in a second stage, synchronizing between the server and the other of the mobile device and the computing terminal, wherein the second stage of synchronizing being permissible only upon verification of an identifier associated with content selected for transfer during the first stage of synchronizing.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: February 10, 2015
    Assignee: BlackBerry Limited
    Inventor: Edward Chun Kei Chan
  • Publication number: 20140335172
    Abstract: Disclosed herein is a novel rinsing agent, which may be suitable for use in surgical, and, in particular, ophthalmological procedures. The rinsing agent may by employed to remove emulsified oil droplets from the eye cavity. Also disclosed is a method for effectively removing emulsified silicone oil droplets remaining in the eye cavity after ophthalmological procedures using the disclosed rinsing agent in order to prevent the development of long-term complications associated with the emulsified oil droplets.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 13, 2014
    Applicant: THE UNIVERSITY OF HONG KONG
    Inventors: Ho Cheung SHUM, Sai Hung WONG, Yau Kei CHAN
  • Patent number: 8745522
    Abstract: A user equipment (UE) and method are provided for displaying items associated with selected media content and to cycle such that multiple items are displayed over time. A UE is provided that includes at least one component configured to display a plurality of items provided in a filmstrip format and associated with a plurality of content and to cycle the items in the filmstrip format. A method therefore is also contemplated.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: June 3, 2014
    Assignee: BlackBerry Limited
    Inventors: Kalu Onuka Kalu, Tudor Coman, Robert Andrew Connell, Edward Chun Kei Chan, Shiladitya Sircar
  • Patent number: 8567716
    Abstract: An uplock assembly for retaining and releasing landing gear systems, said uplock assembly comprising: a thermal actuator comprising: a chamber configured to contain expansible material therein; a heating mechanism coupled to said chamber for heating said expansible material and causing volumetric expansion thereof; a piston slidably coupled to said chamber and adapted to extend in response to said volumetric expansion; and an uplock release mechanism releasably engaged by said piston when extended such that said engaged uplock release mechanism causes the release of said landing gear.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 29, 2013
    Assignee: Messier-Dowty Inc.
    Inventors: R. Kyle Schmidt, Michael Sinclair, Edward Chun Kei Chan
  • Patent number: 8548819
    Abstract: A method for continuing the purchase experience of a personalized semi-custom toy in a follow-up on-line interface experience or in a physical retail experience. The method includes the steps of a consumer assembling a semi-custom toy configuration by selecting from among multiple major component styles and assembling the major component styles selected and selecting additional optional accessories to add to the major components resulting in a semi-custom toy configuration; the consumer inputting identifiers for the selected major component styles and accessories so that an over all toy identifier can be assigned, which is associated with and correlates to the resulting configuration; memorializing the information electronically into a consumer/toy-configuration profile stored in a database having electronic memory for future retrieval and manipulation.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: October 1, 2013
    Assignee: Ridemakerz, LLC
    Inventors: Yuk Kei Chan, Edward Jabbour, Jr.
  • Patent number: 8435094
    Abstract: A modular toy vehicle design having a universal mating system between the body of the vehicle and the chassis such that multiple body styles will interchangeably mate with multiple chassis designs and where electrical interfaces are automatically established between the body and the chassis simply by mating and aligning the two together. The design allows for an electrical connection to be made in the process of mechanically mating and aligning the body of a toy vehicle to its chassis thereby powering electronic features that are physically connected to the body with the power source which is housed in the chassis. When the body is properly aligned and mounted, the electrical interfaces are automatically established. There is no separate step of plugging together mating connectors where one connector extends from a wire bundle electrically interfacing with the body and the mating connector extends from a separate wire bundle electrically interfacing with the chassis.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: May 7, 2013
    Assignee: Ridemakerz, LLC
    Inventors: Donald W. Amadio, James V. Mendillo, Yuk Kei Chan
  • Publication number: 20120079417
    Abstract: A user equipment (UE) and method are provided for displaying items associated with selected media content and to cycle such that multiple items are displayed over time. A UE is provided that includes at least one component configured to display a plurality of items provided in a filmstrip format and associated with a plurality of content and to cycle the items in the filmstrip format. A method therefore is also contemplated.
    Type: Application
    Filed: December 8, 2010
    Publication date: March 29, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Kalu Onuka Kalu, Tudor Coman, Robert Andrew Connell, Edward Chun Kei Chan, Shiladitya Sircar
  • Publication number: 20120041839
    Abstract: A retail store design and method that allows a consumer, particularly a younger child, to actively participate in the customization, assembly, and personalization of a modular toy vehicle while in the retail store environment. The store design can provide an overall experience to the consumer that is interactive and personal. With this store design and method the consumer does not have to settle on limited off-the-shelf variations in toy vehicle design. The consumer can customize their own toy vehicle based on their own individual taste and also participated in the assembly process and personalize the vehicle including assigning a vehicle identification number (VIN) and creating a personalized license plate.
    Type: Application
    Filed: October 26, 2011
    Publication date: February 16, 2012
    Applicant: RIDEMAKERZ, LLC
    Inventors: Adrienne WEISS, Braulio F. PARAJON, Lawrence S. ANDREINI, M. David ARMSTRONG, Edward Jabbour, JR., Donald W. AMADIO, David G. WATKINS, David Wayne FINNEGAN, Lee NADLER, Rizal K. OEI, Richard Dean DWYER, Yuk Kei CHAN
  • Patent number: 8000589
    Abstract: A portable waterproof equipment for containing an articles with a protruding part includes a body (1) having an opening and a wall (12), a sealing structure for sealing the opening of the body (1), a through hole (14) defined in the wall (12), a chamber (16) configured for accommodating the protruding part of the articles connected with the wall (12) at the periphery of the through hole (14), and a sealing device (18) located between the chamber (16) and the wall (12). When in use, put the articles into the body (1) and locate the protruding part into the chamber (16), so the waterproof equipment accommodates the articles with protruding part without any transformation.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: August 16, 2011
    Inventor: Kei Chan
  • Publication number: 20110143630
    Abstract: A modular toy vehicle design having a universal mating system between the body of the vehicle and the chassis such that multiple body styles will interchangeably mate with multiple chassis designs and where electrical interfaces are automatically established between the body and the chassis simply by mating and aligning the two together. The design allows for an electrical connection to be made in the process of mechanically mating and aligning the body of a toy vehicle to its chassis thereby powering electronic features that are physically connected to the body with the power source which is housed in the chassis. When the body is properly aligned and mounted, the electrical interfaces are automatically established. There is no separate step of plugging together mating connectors where one connector extends from a wire bundle electrically interfacing with the body and the mating connector extends from a separate wire bundle electrically interfacing with the chassis.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 16, 2011
    Applicant: RIDEMAKERZ, LLC
    Inventors: Donald W. AMADIO, James V. MENDILLO, Yuk Kei CHAN
  • Patent number: D1018075
    Type: Grant
    Filed: October 2, 2023
    Date of Patent: March 19, 2024
    Assignee: CHANCE ZHUHAI HENGQIN INTERNATIONAL TRADING CO.
    Inventor: In Kei Chan
  • Patent number: D1031175
    Type: Grant
    Filed: January 3, 2024
    Date of Patent: June 11, 2024
    Assignee: CHANCE ZHUHAI HENGQIN INTERNATIONAL TRADING CO.
    Inventor: In Kei Chan