Patents by Inventor Kui Lim

Kui Lim 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: 20230341331
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 26, 2023
    Applicant: Jubilee Diamond Instrument
    Inventor: Kui Lim Tam
  • Patent number: 11668654
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: June 6, 2023
    Assignee: Jubilee Diamond Instrument (S) Pte. Ltd
    Inventor: Kui Lim Tam
  • Publication number: 20210270747
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Application
    Filed: May 18, 2021
    Publication date: September 2, 2021
    Applicant: Jubilee Diamond Instrument
    Inventor: Kui Lim Tam
  • Patent number: 10989667
    Abstract: The application provides a diamond testing device. The testing device includes a casing, a movable specimen holder, an illumination unit, a light sensor unit, and a computing processor. In a closed position, the casing encloses the specimen holder, the illumination unit, and the light sensor unit.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: April 27, 2021
    Assignee: Jubilee Diamond Instrument (S) Pte. Ltd.
    Inventor: Kui Lim Tam
  • Publication number: 20200400646
    Abstract: The application provides an improved gemstone testing apparatus for testing a gemstone specimen. The gemstone testing apparatus includes a handheld casing, a processor unit, a first gemstone test device, a second gemstone test device, and a display unit. The first gemstone test device includes a first test probe and a thermal conductivity test module. The second gemstone test device includes a second test probe and a light absorption module.
    Type: Application
    Filed: August 10, 2020
    Publication date: December 24, 2020
    Inventor: Kui Lim Tam
  • Patent number: 10859559
    Abstract: The application provides an improved gemstone testing apparatus for testing a gemstone specimen. The gemstone testing apparatus includes a handheld casing, a processor unit, a first gemstone test device, a second gemstone test device, and a display unit. The first gemstone test device includes a first test probe and a thermal conductivity test module. The second gemstone test device includes a second test probe and a light absorption module.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: December 8, 2020
    Assignee: Jubilee Diamond Instrument(s) Pte. Ltd.
    Inventor: Kui Lim Tam
  • Publication number: 20200371041
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Application
    Filed: December 19, 2017
    Publication date: November 26, 2020
    Inventor: Kui Lim Tam
  • Patent number: 10837915
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: November 17, 2020
    Assignee: Jubilee Diamond Instrument (S) Pte. Ltd
    Inventor: Kui Lim Tam
  • Publication number: 20200249176
    Abstract: The application provides a diamond testing device. The testing device includes a casing, a movable specimen holder, an illumination unit, a light sensor unit, and a computing processor. In a closed position, the casing encloses the specimen holder, the illumination unit, and the light sensor unit.
    Type: Application
    Filed: May 31, 2018
    Publication date: August 6, 2020
    Inventor: Kui Lim Tam
  • Publication number: 20200217803
    Abstract: The application provides a gemstone testing apparatus for testing a specimen. The gemstone testing apparatus includes a handheld casing, a plurality of light sources, a test probe, a photodetector, a processor unit, and a display unit. The test probe is placed at one end of the handheld casing. A first end of the test probe is placed outside the handheld casing. The plurality of light sources is provided for emitting light rays towards an area that is in the vicinity of the first end. The first end is adapted for receiving light rays from the specimen and for transmitting the light rays to a second end of the test probe. The photodetector is arranged to measure an intensity of the light rays from the second end. The processor unit is provided for determining a material of the specimen in accordance to a measurement of the intensity of the light rays.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Inventor: Kui Lim Tam
  • Patent number: 10247677
    Abstract: A diamond identification apparatus is disclosed, the diamond identification apparatus comprising a support platform for receiving a gemstone at an observation position, a first light source arranged to emit light at a predetermined angle towards the observation position and a first photodiode arranged to detect an amount of light from the first light source being reflected from the gemstone at the observation position. The diamond identification apparatus further comprises a second light source arranged to emit light towards the observation position, a second photodiode arranged to detect light from the second light source that passes through the gemstone at the observation position and a processor unit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: April 2, 2019
    Assignee: Jubilee Diamond Instrument(S) Pte. Ltd.
    Inventor: Kui Lim Tam
  • Patent number: 10228330
    Abstract: A gemstone testing apparatus with an apparatus body, a reflector housing with a light reflective layer at its interior surface, a transparent housing portion that is transparent for ultraviolet light, and a detector probe that is protruding from the transparent housing portion. An UV light emitter is provided within the reflector housing, which is adapted for directing the UV light through the transparent housing portion into the vicinity of a tip of the detector probe.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: March 12, 2019
    Assignee: Jubilee Diamond Instrument (S) Pte. Ltd.
    Inventor: Kui Lim Tam
  • Publication number: 20190072495
    Abstract: A diamond identification apparatus is disclosed, the diamond identification apparatus comprising a support platform for receiving a gemstone at an observation position, a first light source arranged to emit light at a predetermined angle towards the observation position and a first photodiode arranged to detect an amount of light from the first light source being reflected from the gemstone at the observation position. The diamond identification apparatus further comprises a second light source arranged to emit light towards the observation position, a second photodiode arranged to detect light from the second light source that passes through the gemstone at the observation position and a processor unit.
    Type: Application
    Filed: October 31, 2018
    Publication date: March 7, 2019
    Inventor: Kui Lim Tam
  • Publication number: 20190011373
    Abstract: A gemstone testing apparatus with an apparatus body, a reflector housing with a light reflective layer at its interior surface, a transparent housing portion that is transparent for ultraviolet light, and a detector probe that is protruding from the transparent housing portion. An UV light emitter is provided within the reflector housing, which is adapted for directing the UV light through the transparent housing portion into the vicinity of a tip of the detector probe.
    Type: Application
    Filed: September 12, 2018
    Publication date: January 10, 2019
    Inventor: Kui Lim Tam
  • Patent number: 10161878
    Abstract: A diamond identification apparatus is disclosed, the diamond identification apparatus comprising a support platform for receiving a gemstone at an observation position, a first light source arranged to emit light at a predetermined angle towards the observation position and a first photodiode arranged to detect an amount of light from the first light source being reflected from the gemstone at the observation position. The diamond identification apparatus further comprises a second light source arranged to emit light towards the observation position, a second photodiode arranged to detect light from the second light source that passes through the gemstone at the observation position and a processor unit.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: December 25, 2018
    Assignee: Jubilee Diamond Instrument (S) Pte. Ltd.
    Inventor: Kui Lim Tam
  • Patent number: D826753
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 28, 2018
    Assignee: Jubilee Diamond Instrument Limited
    Inventor: Kui Lim Tam
  • Patent number: D826754
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 28, 2018
    Assignee: Jubilee Diamond Instrument Limited
    Inventor: Kui Lim Tam
  • Patent number: D826755
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 28, 2018
    Assignee: Jubilee Diamond Instrument Limited
    Inventor: Kui Lim Tam
  • Patent number: D878229
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: March 17, 2020
    Assignee: Jubilee Diamond Instrument Limited
    Inventor: Kui Lim Tam
  • Patent number: D984293
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: April 25, 2023
    Assignee: Jubilee Diamond Instrument Limited
    Inventor: Kui Lim Tam