Patents by Inventor Chee-Keong CHEW

Chee-Keong CHEW 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).

  • Coded zoom knob, microscope having the same and method for retrofitting a coded zoom knob
    Patent number: 11460681
    Abstract: The present invention relates to a coded zoom knob (3) for detecting the rotation of the zoom drive shaft (4) of a zoom system (10) of a microscope (1), comprising a magnet (34) coupled to the zoom drive shaft (4), and a magnetic sensor (43) rotatably decoupled from the magnet (34) for sensing a rotation of the magnet (34).
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: October 4, 2022
    Assignee: LEICA INSTRUMENTS (SINGAPORE) PTE. LTD.
    Inventors: Chee-Keong Chew, Peng Liu, Andreas Bosch
  • CODED ZOOM KNOB, MICROSCOPE HAVING THE SAME AND METHOD FOR RETROFITTING A CODED ZOOM KNOB
    Publication number: 20200393663
    Abstract: The present invention relates to a coded zoom knob (3) for detecting the rotation of the zoom drive shaft (4) of a zoom system (10) of a microscope (1), comprising a stator (40) and a rotor (30) rotatable in relation to the stator (40), the rotor (30) being adapted to be mounted to the zoom drive shaft (4), and the stator (40) comprising a rotation sensor (43) for sensing a rotation of the rotor (30), and to a method of retrofitting a microscope with such a coded zoom knob (3).
    Type: Application
    Filed: August 28, 2020
    Publication date: December 17, 2020
    Inventors: Chee-Keong CHEW, Peng LIU, Andreas BOSCH
  • Coded zoom knob, microscope having the same and method for retrofitting a coded zoom knob
    Patent number: 10816785
    Abstract: The present invention relates to a coded zoom knob (3) for detecting the rotation of the zoom drive shaft (4) of a zoom system (10) of a microscope (1), comprising a stator (40) and a rotor (30) rotatable in relation to the stator (40), the rotor (30) being adapted to be mounted to the zoom drive shaft (4), and the stator (40) comprising a rotation sensor (43) for sensing a rotation of the rotor (30), and to a method of retrofitting a microscope with such a coded zoom knob (3).
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: October 27, 2020
    Assignee: Leica Instruments (Singapore) Pte. Ltd.
    Inventors: Chee-Keong Chew, Peng Liu, Andreas Bosch
  • CODED ZOOM KNOB, MICROSCOPE HAVING THE SAME AND METHOD FOR RETROFITTING A CODED ZOOM KNOB
    Publication number: 20180246310
    Abstract: The present invention relates to a coded zoom knob (3) for detecting the rotation of the zoom drive shaft (4) of a zoom system (10) of a microscope (1), comprising a stator (40) and a rotor (30) rotatable in relation to the stator (40), the rotor (30) being adapted to be mounted to the zoom drive shaft (4), and the stator (40) comprising a rotation sensor (43) for sensing a rotation of the rotor (30), and to a method of retrofitting a microscope with such a coded zoom knob (3).
    Type: Application
    Filed: February 13, 2018
    Publication date: August 30, 2018
    Inventors: Chee-Keong CHEW, Peng LIU, Andreas BOSCH