Patents by Inventor Wallace Leung

Wallace Leung 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: 11224860
    Abstract: The present disclosure relates to a surface comprising a photocatalyst affixed thereupon via an adhesive layer and methods for affixing the photocatalyst to the surface via the adhesive layer. The present disclosure also provides a purifier comprising the photocatalyst affixed surface and a purifier system comprising such purifier.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: January 18, 2022
    Assignee: The Hong Kong Polytechnic University
    Inventor: Woon-Fong Wallace Leung
  • Publication number: 20200276560
    Abstract: The present disclosure relates to a surface comprising a photocatalyst affixed thereupon via an adhesive layer and methods for affixing the photocatalyst to the surface via the adhesive layer. The present disclosure also provides a purifier comprising the photocatalyst affixed surface and a purifier system comprising such purifier.
    Type: Application
    Filed: February 28, 2019
    Publication date: September 3, 2020
    Inventor: Woon-Fong Wallace Leung
  • Patent number: 9017266
    Abstract: The present invention teaches a system for the automated palpation testing of a patient, including the use of a robotic device with a actuating element thereto. The system is useful for testing patients at risk of nerve degradation, such as diabetic sufferers. The system includes a controller for programming the robotic device to administer the test in a particular pattern, and a storage medium for storing the results of the test. The system allows a more accurate determination of the stage of nerve degradation, as well as being more standardized because of the inclusion of automation technology.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: April 28, 2015
    Assignee: The Hong Kong Polytechnic University
    Inventors: Woon Fong Wallace Leung, Kin Tak Alan Lau
  • Patent number: 8540652
    Abstract: The present invention relates a system and method to allow users to train different joints of a limb in different planes. The rotation of the system can be driven by a motor to assist or resist the motion for training purpose. By the present invention, the user can use the device to switch training between the vertical and horizontal planes, without changing the device and any module. The system is also adjustable to meet different users' body sizes.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: September 24, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Kai Yu Tong, Rong Song, Chiu Hoi Lam, Wai Man Tam, Shu To Ng, Tak Chi Lee, Man Kit Peter Pang, King Lun Kwok, Yin Bonn Philip Tsui, Woon Fong Wallace Leung
  • Patent number: 7854708
    Abstract: The present invention relates to devices and methods for a joint linkage device suitable for training multi-joints in a single limb. The joint linkage device is capable of rotation at a proximal end and a distal end. The device includes a proximal end having an upper plate, a middle plate, and a lower plate, a distal plate, a side bar, a main bar, a switch mechanism, and an extended bar. In use, a torque from a motor is applied to the upper plate to provide a user with an assistance torque, a resistance torque, or a assistance/resistance torque.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: December 21, 2010
    Inventors: Kai Yu Tong, Rong Song, Chiu Hoi Lam, Wai Man Tam, Kwok Kuen Kwong, Tak Chi Lee, Man Kit Peter Pang, King Lun Kwok, Mau Wah Chan, Woon Fong Wallace Leung
  • Publication number: 20080293551
    Abstract: The present invention relates to devices and methods for a joint linkage device suitable for training multi-joints in a single limb. The joint linkage device is capable of rotation at a proximal end and a distal end. The device includes a proximal end having an upper plate, a middle plate, and a lower plate, a distal plate, a side bar, a main bar, a switch mechanism, and an extended bar. In use, a torque from a motor is applied to the upper plate to provide a user with an assistance torque, a resistance torque, or a assistance/resistance torque.
    Type: Application
    Filed: May 22, 2007
    Publication date: November 27, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Kai Yu Tong, Rong Song, Chiu Hoi Lam, Wai Man Tam, Kwok Kuen Kwong, Tak Chi Lee, Man Kit Peter Pang, King Lun Kwok, Mau Wah Chan, Woon Fong Wallace Leung
  • Publication number: 20080294074
    Abstract: The present invention relates a system and method to allow users to train different joints of a limb in different planes. The rotation of the system can be driven by a motor to assist or resist the motion for training purpose. By the present invention, the user can use the device to switch training between the vertical and horizontal planes, without changing the device and any module. The system is also adjustable to meet different users' body sizes.
    Type: Application
    Filed: May 22, 2007
    Publication date: November 27, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Kai Yu Tong, Rong Song, Chiu Hoi Lam, Wai Man Tam, Shu To Ng, Tak Chi Lee, Man Kit Peter Pang, King Lun Kwok, Yin Bonn Philip Tsui, Woon Fong Wallace Leung
  • Publication number: 20080193905
    Abstract: The present invention teaches a system for the automated palpation testing of a patient, including the use of a robotic device with a actuating element thereto. The system is useful for testing patients at risk of nerve degradation, such as diabetic sufferers. The system includes a controller for programming the robotic device to administer the test in a particular pattern, and a storage medium for storing the results of the test. The system allows a more accurate determination of the stage of nerve degradation, as well as being more standardized because of the inclusion of automation technology.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Woon Fong Wallace Leung, Kin Tak Alan Lau
  • Patent number: 7022061
    Abstract: A rotating machine has a rotatable bowl generating a cylindrical slurry pool and at least one liquid phase discharge port assembly provided on the bowl. Each of one or more liquid phase discharge port assemblies on a bowl head define a liquid phase discharge path having a circumferential component oriented in opposition to a direction of rotation of the bowl. Each discharge port assembly includes a tubular member having at least one or two elbow pipe sections.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: April 4, 2006
    Assignee: Andritz AG
    Inventors: Woon-Fong (Wallace) Leung, Ascher H. Shapiro
  • Patent number: 6823605
    Abstract: In order to create a solid-bow centrifuge for mechanical drainage and thermal drying of sludges, in which the possibility of clumping or of bake-on of the finely dispersed thick matter spun off from the thick matter outlet openings is minimized or prevented, according to the invention it is proposed to provide in the flight path of the spun off thick matter, a baffle cone surrounding the thick matter outlet openings at a distance and which rotates at a high circumferential velocity, that is, preferably it rotates together with the basket shell, and whose inner, ring-shaped, rotating conical surface accelerates the arriving thick matter and prevents solids bake-on.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: November 30, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Martin Denuell, Eberhard Koppe, Wallace Leung
  • Publication number: 20040035018
    Abstract: In order to create a solid-bow centrifuge for mechanical drainage and thermal drying of sludges, in which the possibility of clumping or of bake-on of the finely dispersed thick matter spun off from the thick matter outlet openings is minimized or prevented, according to the invention it is proposed to provide in the flight path of the spun off thick matter, a baffle cone surrounding the thick matter outlet openings at a distance and which rotates at a high circumferential velocity, that is, preferably it rotates together with the basket shell, and whose inner, ring-shaped, rotating conical surface accelerates the arriving thick matter and prevents solids bake-on.
    Type: Application
    Filed: June 20, 2003
    Publication date: February 26, 2004
    Inventors: Martin Denuell, Eberhard Koppe, Wallace Leung
  • Patent number: 6143183
    Abstract: Computerized (e.g., "intelligent") systems for monitoring, diagnosing, operating and controlling various parameters and processes of continuous feed centrifuges is presented. The computer control system actuates at least one of a plurality of control devices based on input from one or more monitoring sensors so as to provide real time continuous operational control. The monitoring sensors may sense process and other parameters located both inside the centrifuge (e.g., inside the bowl) and outside or exterior to the centrifuge (e.g., outside the bowl) including machine operation parameters and parameters related to the input and output streams of the centrifuge.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: November 7, 2000
    Assignee: Baker Hughes Incorporated
    Inventors: Peter Wardwell, Wallace Leung
  • Patent number: 5948271
    Abstract: Centrifuges having a rotating bowl and associated computerized systems for monitoring, diagnosing, operating and controlling various parameters and processes of the centrifuges are presented. The computerized control system actuates at least one out of a plurality of control devices based on input from one or more monitoring sensors so as to provide real time continuous operational control. The monitoring sensors may sense process and other parameters and may be located both inside the centrifuge or bowl and outside the centrifuge or bowl and may monitor machine operation parameters and parameters related to the input and output streams of the centrifuge.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 7, 1999
    Assignee: Baker Hughes Incorporated
    Inventors: Peter Wardwell, Wallace Leung, Lynn Hales