Patents by Inventor Yu-Hsin Chen

Yu-Hsin Chen 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: 6508569
    Abstract: A flat illuminator, which may have a replaceable battery power supply and with a sliding inner body forming an “on” and “off” switch.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: January 21, 2003
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20020186563
    Abstract: A light for use with computers containing light emitting diodes, which may be directional, on one or more movable supports which is powered via the computer's USB or IEEE 1394 port. An auxiliary USB or IEEE 1394 port may be combined with the plug-in light to allow for additional devices to be connected through the same port powering the light.
    Type: Application
    Filed: July 30, 2002
    Publication date: December 12, 2002
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Patent number: 6447143
    Abstract: A flat card shaped illuminator with an on/off switch integrally formed therein. The flat card shaped light is adapted to a variety of uses and the on/off switch may be momentary or latching. One or more LEDs may be incorporated therein and the batteries may be removable.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: September 10, 2002
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20020097587
    Abstract: A laser illuminator which produces a diffuse coherent output. The energy of the diffuse output may be controlled with a variable current switch and a pinpoint targeting laser may be added to provide illumination and targeting capabilities.
    Type: Application
    Filed: February 12, 2001
    Publication date: July 25, 2002
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20010048597
    Abstract: A flat illuminator, which may have a replaceable battery power supply and with a sliding inner body forming an “on” and “off” switch.
    Type: Application
    Filed: May 8, 2001
    Publication date: December 6, 2001
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20010043468
    Abstract: A light for use with computers containing one or more light emitting diodes on one or more flexible necks which is powered via the computers USB or IEEE 1394 port. An auxiliary USB or IEEE 1394 port may be combined with the plug-in light to allow for additional devices top be connected through the same port powering the light.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 22, 2001
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20010040801
    Abstract: A flat illuminator, which may utilize a plurality of batteries and may support multiple LED illumination sources, adapted for high volume assembly with a momentary on/off switch formed therein. Encoded data and/or a key blank may also be combined with the flat illuminator.
    Type: Application
    Filed: May 8, 2001
    Publication date: November 15, 2001
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Publication number: 20010030858
    Abstract: A flat card shaped illuminator with an on/off switch integrally formed therein. The flat card shaped light is adapted to a variety of uses and the on/off switch may be momentary or latching. One or more LEDs may be incorporated therein and the batteries may be removable.
    Type: Application
    Filed: December 19, 2000
    Publication date: October 18, 2001
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Patent number: 5988114
    Abstract: A removable over-the-door suspending scratching device for cats which is self-dampening and provides a large volume scratching surface without requiring floor space for a base, which encourages a pet to scratch at and climb the device rather than upholstered furniture. A track suspending a raised rolling target may also be formed as part of the scratching device.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: November 23, 1999
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Patent number: 5870971
    Abstract: A multi-apertured enclosure having one or more rolling target objects located therein. A plurality of slotted openings, of a fixed maximum diameter, which provide access for multiple cat paws, at a great variety of angles and configurations to attack the targets, external replaceable targets, scratching surfaces and refillable catnip dispensing reservoirs may be added which encourage the cat to play on its own.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: February 16, 1999
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Patent number: 5829391
    Abstract: A removable anchor for suspending a pet toy and exercise device under the bottom of an existing dwelling door to allow the pet to interact with the pet toy and exercise and play by itself, the device comprises a durable removable door anchor, supporting a variety of interchangeable wands, teases, scratching surface and track-ball enclosures all of which encourage a pet to interact "on its own" with the device.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: November 3, 1998
    Inventors: Mark Howard Krietzman, Yu-Hsin Chen
  • Patent number: 5778825
    Abstract: A feline exercise and play target object, comprising a housing having an external wall and an internal wall defining an enclosed cavity; support receiving device incorporated in the housing whereby the housing can be detachably supported and such that the housing can freely rotate while supported; and attraction attachment device incorporated in the housing such that a variety of mechanical attractions can be attached to the housing. The feline exercise and play target object also comprises a filling aperture incorporated in the housing to allow placement of natural attractant into the enclosed cavity and a plurality of pores to allow the natural attractant to escape from the cavity.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: July 14, 1998
    Inventors: Mark H. Krietzmen, Yu-Hsin Chen
  • Patent number: 5649499
    Abstract: A feeding bowl mounted unitarially fabricated with edges which form an angled support for the bowl. The food in the bowl is protected by a rotational or sliding cover movable by an animal to expose the food for feeding. The exposed surface of the lid may be textured to be engagable by the animal. The lid is biased so that under the condition of the lid being released by the animal the lid is urged into a position to cover the food and form a seal between the lid an bowl to prevent the intrusion of insects. The lid further protects the food from moisture and from animals and birds not capable of moving the lid.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: July 22, 1997
    Inventors: Mark H. Krietzman, Yu-Hsin Chen
  • Patent number: 5474032
    Abstract: A pet toy and excerises device adapted to be selectively mounted over the top of an existing dwelling door to allow the pet to interact with the device and "play by itself", or the device may be hand held to initiate excerise. The device comprises a plurality of wands, flexible or rigid, a tether and a target object. The device may further combine a counterweight and a stop selectively mounted on the tether all of which increase the eccentricity of the orbit of the target object when the target is encountered by the pet.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: December 12, 1995
    Inventors: Mark H. Krietzman, Yu-Hsin Chen