Patents by Inventor John Se Kit Yuen

John Se Kit Yuen 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: 7458481
    Abstract: A drink-item holding apparatus incorporates an upper flap and a lower flap which may be unfolded from a stowed configuration to a deployed configuration in which the upper flap is releasably latched in its horizontal position. Projections at the rear edge of the upper flap resiliently push in L-shaped arms against the biasing action of springs until the projections snap past the arms which then serve to latch the upper flap in its deployed configuration. The upper flap may be rotated in the reverse direction in order to unlatch the projections so as to return to the stowed configuration. The upper flap is therefore protected against inadvertent downward rotation. The lower flap folds away upwards, and the upper flap folds away downwards against the lower surface of the lower flap in order to produce a compact arrangement of the apparatus.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: December 2, 2008
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: 7364605
    Abstract: A photo-electronic air purifying disinfector firstly filters out airborne impurities using a washable filter screen. It then utilizes an activated carbon filter to filter out airborne bacteria and germs. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. It also utilizes a negative ion generator to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves cathodic high-voltage output that is discharged via a carbonized fibre. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: April 29, 2008
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: 7273515
    Abstract: A 4-in-1 photo-electronic air purifying and conditioning system, which utilizes alternating current suitable for use in all weather conditions has activated carbon filters used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. A negative ion generator is used to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via carbonized fibers. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 25, 2007
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: 7270696
    Abstract: A 3-in-1 photo-electronic air purifying and disinfecting system, which utilizes alternating current, has an activated carbon filter used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. An anion generator is also included to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fiber. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mold from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 18, 2007
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: 7264657
    Abstract: A 4-in-1 photo-electronic air conditioning, dehumidifying, purifying and disinfecting system has an activated carbon filter in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs in the extracted air, which are capable of passing through the activated carbon filter, are then eliminated by extreme-UV light emitted by extreme-UV light tubes. The excessive moisture in the air is also removed. A negative ion generator is also used to boost the level of anions in the air. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fibre. The ionised air is then expelled by an air drum. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: September 4, 2007
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: D502471
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: March 1, 2005
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D505759
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: May 31, 2005
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: D507360
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: July 12, 2005
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D481146
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: October 21, 2003
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D482925
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: December 2, 2003
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: D485628
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: January 20, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: D486256
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: February 3, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se-Kit Yuen
  • Patent number: D486467
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: February 10, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D489470
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: May 4, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D489837
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: May 11, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D491959
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: June 22, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D492434
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: June 29, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D492800
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: July 6, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D493556
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: July 27, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen
  • Patent number: D494297
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: August 10, 2004
    Assignee: John Manufacturing Limited
    Inventor: John Se Kit Yuen