Patents by Inventor Tat Choi

Tat Choi 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: 11857605
    Abstract: Provided herein are thiosuccinyl-crosslinked hemoglobin conjugates useful as blood replacement agents and therapeutic proteins, pharmaceutical compositions comprising the same and the methods of use and preparation thereof.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: January 2, 2024
    Assignee: Billion King International Limited
    Inventors: Kwok Chu Butt, Norman Fung-Man Wai, Hiu Chi Chong, Wing Tat Choi, Colin Pak Fai Yeh, Benjamin Chi Yin Wai
  • Publication number: 20220280616
    Abstract: Provided herein are thiosuccinyl-crosslinked hemoglobin conjugates useful as blood replacement agents and therapeutic proteins, pharmaceutical compositions comprising the same and the methods of use and preparation thereof.
    Type: Application
    Filed: February 28, 2022
    Publication date: September 8, 2022
    Inventors: Kwok Chu BUTT, Norman Fung-Man WAI, Hiu Chi CHONG, Wing Tat CHOI, Colin Pak Fai YEH, Benjamin Chi Yin WAI
  • Publication number: 20190367240
    Abstract: A blow molded container includes a main member comprising a top, a first side orthogonal to the top, a second side orthogonal to the top, an external wall, and an internal wall defining a tool cavity. A corner portion is defined as a portion of the main member and includes least a first layer and a second layer. The first layer forming at least a part of the external wall and the second layer forming at least a part of the internal wall. The first layer and the second layer are adhered together to along a predetermined pattern to form at least a first line segment and a second line segment on one of the internal wall or the external wall of the corner portion.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 5, 2019
    Inventors: Wai Tat CHOI, Zengjun JIANG, Sanming WANG, Chao ZHONG, Huadong ZHANG
  • Patent number: 10377551
    Abstract: A blow molded container includes a main member (20) forming a tool cavity. The main member (20) has an inner surface. The main member (20) further contains at least one corner portion (30) and at the corner portion (30), the main member (20) includes at least a first layer (40) and a second layer (42). The first layer (40) forming the inner surface, and the first layer (40) and the second layer (42) are affixed together along a predetermined pattern while being separated from each other elsewhere. The first layer (40) is formed with a first protruding part (143) along the predetermined pattern, and the second layer (42) is formed with a second protruding part (145) along the predetermined pattern. The first protruding part (143) and the second protruding part (145) are affixed together.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 13, 2019
    Assignee: TECHTRONIC INDUSTRIES COMPANY LIMITED
    Inventors: Wai Tat Choi, Zengjun Jiang, Sanming Wang, Chao Zhong, Huadong Zhang
  • Publication number: 20170197774
    Abstract: A blow molded container includes a main member (20) forming a tool cavity. The main member (20) has an inner surface. The main member (20) further contains at least one corner portion (30) and at the corner portion (30), the main member (20) includes at least a first layer (40) and a second layer (42). The first layer (40) forming the inner surface, and the first layer (40) and the second layer (42) are affixed together along a predetermined pattern while being separated from each other elsewhere. The first layer (40) is formed with a first protruding part (143) along the predetermined pattern, and the second layer (42) is formed with a second protruding part (145) along the predetermined pattern. The first protruding part (143) and the second protruding part (145) are affixed together.
    Type: Application
    Filed: August 6, 2014
    Publication date: July 13, 2017
    Inventors: Wai Tat CHOI, Zengjun JIANG, Sanming WANG, Chao ZHONG, Huadong ZHANG
  • Patent number: 8800768
    Abstract: A clamshell package includes a first clamshell portion having a first surface with a first edge, and a first chamber portion. A second clamshell portion is coupled to the first clamshell portion about a fold axis. The second clamshell portion has a second surface with a second edge, and a second chamber portion. A paper card includes a first card portion, a second card portion, and a connecting portion connecting the first card portion and the second card portion. The first card portion is coupled to the first surface. The second portion is coupled to the second surface. The first edge and second edge extend beyond a perimeter of the paper card. A hanging hole extends through the first clamshell portion, the second clamshell portion, and the paper card.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: August 12, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Jeffrey Corbat, Wai Tat Choi
  • Publication number: 20130319896
    Abstract: A clamshell package includes a first clamshell portion having a first surface with a first edge, and a first chamber portion. A second clamshell portion is coupled to the first clamshell portion about a fold axis. The second clamshell portion has a second surface with a second edge, and a second chamber portion. A paper card includes a first card portion, a second card portion, and a connecting portion connecting the first card portion and the second card portion. The first card portion is coupled to the first surface. The second portion is coupled to the second surface. The first edge and second edge extend beyond a perimeter of the paper card. A hanging hole extends through the first clamshell portion, the second clamshell portion, and the paper card.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventors: Jeffrey Corbat, Wai Tat Choi
  • Patent number: 6573769
    Abstract: A phase-locked loop (PLL) includes a final mixer on its output. The final mixer subtracts out a noise or error term from the PLL's output to reduce noise and jitter. A first mixer generates the error term by subtracting a feedback clock from the reference clock. This error term is near D.C. since the feedback and reference clocks are at the same frequency. When this error term is subtracted from the PLL output, a secondary maxima in the noise plot at the PLL's loop bandwidth is removed. A feedback counter receives the output of the voltage-controlled oscillator (VCO) before the final mixer. Outer-band noise created by the VCO is subtracted out by the final mixer, using the error term generated by the first mixer. The mixers reduce noise generated by the VCO or from other sources in the PLL.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: June 3, 2003
    Assignee: Pericom Semiconductor Corp.
    Inventors: Michael Y. Zhang, Tat Choi