Patents by Inventor Steven Chang

Steven Chang 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: 20040131212
    Abstract: An LCD display has a built-in audio processing device. The audio processing device receives audio signals from a piece of Audio/Video equipment and modulates the received audio signals. The modulated audio signals are further wirelessly emitted by infrared emitting diodes that are mounted in a position near the screen of the LCD display. When a user wears wireless earphones, the audio signals can be received and played by the earphones so people in the proximity of the LCD display will not be distracted by the sound.
    Type: Application
    Filed: February 19, 2003
    Publication date: July 8, 2004
    Inventor: Steven Chang
  • Publication number: 20040108991
    Abstract: A cushion for an overhead LCD monitor in combination with a DVD player includes four springs each having a first end adapted to be securely connected to a corresponding one of the extensions of the carrier. A seat is adapted to be securely mounted on the base and connected to the second end of the spring so that the carrier is supported by the spring to be separate from the base.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 10, 2004
    Inventor: Steven Chang
  • Patent number: 6685825
    Abstract: A system for treating water includes an ozone injector combined with a monitoring apparatus 400 that includes a flow meter 402 and a pressure sensor 404. The monitoring apparatus includes a flow path 424 having inlets 420, 422 communicating with the inlet 304 and outlet 306 of the ozone injector main water pipe 302. The flow path inlets are spaced respectively upstream and downstream of the ozone injection point. In operation, water filtered in filter 108 is ozonized in venturi 316 and then sterilized by UV lamp 210. The lamp is also used to generate ozone that is delivered to the venturi via check valve 308. The pressure sensor positioned within the flow path produces signals to control the switch of the UV lamp. The flow meter is used to determine when the filter should be replaced. The pressure sensor may be in the form of a silicon chip.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: February 3, 2004
    Assignee: Senno Technology Inc.
    Inventor: Steven Chang
  • Patent number: 6647819
    Abstract: A transmission assembly for a ceiling-mounted TV in a vehicle has a series of gears mutually mated with each other so as to move the moving plate with respect of the fixing plate of the support. A biasing spring is added in between the series of gears so as to enable the transmission to be disengaged when the moving plate reaches a predetermined angle. A memory device is added to the transmission assembly to register the rotation angle of the moving plate and to shut down the power to the transmission assembly when the moving plate reaches a predetermined angle.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: November 18, 2003
    Assignee: Punch Video, Inc.
    Inventor: Steven Chang
  • Publication number: 20030128183
    Abstract: An overhead monitor in combination with a DVD player includes a fixed plate adapted to be mounted in a ceiling of an automobile and provided with a concave area and a recessed area defined in a bottom face defining the concave area to receive therein the DVD player and a moving plate pivotally connected to the fixed plate and having the monitor embedded therein. The DVD player has a cover with a wedge and an extension, a clamp and a hole with a sensor received therein are defined in a face of the concave area to respectively correspond to the wedge and the extension, so that only when the cover securely engages the face of the concave area, can the DVD player be operated normally.
    Type: Application
    Filed: January 4, 2002
    Publication date: July 10, 2003
    Inventor: Steven Chang
  • Publication number: 20010036725
    Abstract: A method of fabricating a bottom anti-reflectivity coating (BARC) layer. The method of the invention comprises performing a pre-bake process on a provided titanium nitride layer. Amine ions absorbed into the surface of the titanium nitride layer are thus removed by the high temperature of the pre-bake process. A BARC layer is formed on the titanium nitride layer. A bake step is performed to remove a solvent, which is used for coating the BARC layer. A photoresist layer is coated on the BARC layer. Then, a soft-bake step is performed to remove a solvent, which is used for coating the photoresist layer. A photomask with a pattern is provided over the photoresist layer. An exposure step is performed to transfer the pattern to the photoresist layer. A development step is performed to remove a part of the photoresist layer so that the pattern is shown within the photoresist layer. A hard-bake step is performed to minimize the solvent in the photoresist layer.
    Type: Application
    Filed: June 18, 1999
    Publication date: November 1, 2001
    Inventor: STEVEN CHANG
  • Patent number: 5622127
    Abstract: An automatic dual bobbin mechanism is provided. A housing containing two unique bobbin casings and bobbins therein oriented side-by-side with the sewing needle and thread passing between the bobbin casing pair replaces the convention single bobbin configuration. The bobbin pair acts in a tag-team operation whereby one bobbin supplies thread to be stitched into a fabric while the second bobbin is simultaneously filled with thread from an external source. When the first bobbin is emptied, the bobbin pair is rotated 180.degree. inside the housing. The second bobbin, now full, supplies thread for continued stitching while the first bobbin is refilled with thread supplied by the external source. The specially designed bobbins and bobbin casings allow for automatic rethreading of the empty bobbin and cutting of the bobbin thread from external source, thus eliminating the need to manually remove the empty bobbin and assembly, replace with a full bobbin and rethread.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: April 22, 1997
    Inventor: Steven Chang
  • Patent number: 5367682
    Abstract: A virus protection system, which may be coupled to an external input/output port of a disk operated data processing system, includes a read only memory in which a redundant partition table is stored, duplicating a partition table on the disk. The virus detection system further includes detection logic which monitors a transfer of data from the disk to a system random access memory and which detects data transfers to a high region of the system memory during initial portions of the transfer. When a virus is detected, the redundant partition table is written onto the disk.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: November 22, 1994
    Inventor: Steven Chang
  • Patent number: 4917072
    Abstract: A combination arrow sight and support device for use with an arrow having feathers and an archery bow comprises a generally conical frame having a ring portion and a conical portion. The conical portion defines a central arrow support aperture and includes arrow feather slots to permit passage of the feathers therethrough. An entrance slot permits entrance of the arrow into said central aperture. The arrow slots may be either straight or curved to provide an axial rotation to the arrow as it passes through the unit.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: April 17, 1990
    Assignee: C & M Sports Enterprises, Inc.
    Inventor: Steven Chang
  • Patent number: 4858589
    Abstract: A combination arrow sight and support device is adapted to be mounted to an archery bow. A horizontal bar projects outwardly from the bow across the plane defined by drawstring action and in front of the drawn position of the drawstring. An arrow support is mounted to the bar and depends therefrom in the plane of drawstring action. A peep-sight, mounted for adjustable travel along the bar, projects upwardly therefrom. A mounting plate, secured to the bow in the area of the bow's hand-grip portion thereof pivotally supports a bar-support arm about a horizontal axis. The bar support arm is also pivotally mounted to the horizontal bar to allow adjustment of the device in the vertical sense with respect to the bow.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: August 22, 1989
    Assignee: C & M Sports Enterprises Inc.
    Inventor: Steven Chang
  • Patent number: D468276
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: January 7, 2003
    Assignee: Punch Video Inc.
    Inventor: Steven Chang
  • Patent number: D468711
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: January 14, 2003
    Assignee: Punch Video, Inc.
    Inventor: Steven Chang
  • Patent number: D385981
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: November 4, 1997
    Inventor: Steven Chang
  • Patent number: D387007
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: December 2, 1997
    Inventor: Steven Chang
  • Patent number: D387008
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: December 2, 1997
    Inventor: Steven Chang
  • Patent number: D387636
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: December 16, 1997
    Inventor: Steven Chang