Patents by Inventor Shun-Hwa Chang

Shun-Hwa 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).

  • Patent number: 10204606
    Abstract: Apparatus for enhancing tunes produced out of single-reed wind music instrument are disclosed. Apparatus comprise one or more sound enhancing elements in form of a plurality of elongated ribs or grooves, or one or more studs. The sound enhancing elements are affixed to either side or both sides of a reed. Patterns of the elongated ribs/grooves can be straight or wavy lines orientated in longitudinal, transverse or oblique direction with respect to the reed. Each stud contains a 3-D geometric shape portion for altering sounds produced out of a single-reed wind music instrument when played by a player, and a base of the 3-D geometric shape portion for affixing the stud to either side or both sides of a reed in an effective area. Dimensions/locations of the effective area are single-reed wind music instrument dependent.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: February 12, 2019
    Inventor: Shun-Hwa Chang
  • Patent number: 9779704
    Abstract: Apparatus for providing teeth position guide for single-reed woodwind music instruments are disclosed. The apparatus includes a mouthpiece patch containing top and bottom sides with at least two thickness layer formed therebetween. The bottom side is a flat surface having an adhesive means configured thereon. The top side is a split-level surface containing first and second levels having different thicknesses. A ledge is formed between the first level and the second level, whereby the ledge is configured as a position guide for upper incisor teeth of a player of woodwind instruments, when the mouthpiece patch is attached to a mouthpiece.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 3, 2017
    Inventor: Shun-Hwa Chang
  • Publication number: 20170053628
    Abstract: Apparatus for enhancing tunes produced out of single-reed wind music instrument are disclosed. Apparatus comprise one or more sound enhancing elements in form of a plurality of elongated ribs or grooves, or one or more studs affixed to a reed's table side. Patterns of the elongated ribs/grooves can be straight or wavy lines orientated in longitudinal, transverse or oblique direction with respect to the reed. Each stud contains a three-dimensional (3-D) geometric shape portion for altering sounds produced out of a single-reed wind music instrument when played by a player, and a base of the 3-D geometric shape portion for affixing the stud to the table side of a reed in an area directly opposite to the heart of the reed. Dimensions of the area are single-reed wind music instrument dependent.
    Type: Application
    Filed: August 21, 2015
    Publication date: February 23, 2017
    Inventor: Shun-Hwa Chang
  • Patent number: 9570052
    Abstract: Apparatus for enhancing tunes produced out of single-reed wind music instrument are disclosed. Apparatus comprise one or more sound enhancing elements in form of a plurality of elongated ribs or grooves, or one or more studs affixed to a reed's table side. Patterns of the elongated ribs/grooves can be straight or wavy lines orientated in longitudinal, transverse or oblique direction with respect to the reed. Each stud contains a three-dimensional (3-D) geometric shape portion for altering sounds produced out of a single-reed wind music instrument when played by a player, and a base of the 3-D geometric shape portion for affixing the stud to the table side of a reed in an area directly opposite to the heart of the reed. Dimensions of the area are single-reed wind music instrument dependent.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: February 14, 2017
    Inventor: Shun-Hwa Chang
  • Patent number: 9038872
    Abstract: A carrying strap for supporting an object is described. According to an exemplary embodiment of the present invention, the carrying strap comprises a neck pad for distributing the object's weight over the user's neck, the neck pad having inner or first, and outer or second sides affixed to each other along perimeter, wherein the first side is configured to contact backside of the user's neck and the first side comprises two partially overlapped layers in a mirror-image orientation to form an open slot, located substantially near center portion of the neck pad, which is configured for housing a removable cushion that provides extra cushion to the backside of the user's neck; at least one hook for securing the object; and an extension portion connecting the neck pad and the at least one hook.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 26, 2015
    Inventor: Shun-Hwa Chang
  • Patent number: 8106279
    Abstract: Wind musical instrument moisture drying devices are disclosed. According to one embodiment, the drying device comprises a fan unit containing a fan mounted on a motor housed in an enclosure having opposite first and second ends, the fan is located within the enclosure near the first end and is configured for drawing air flow from the second end toward the first end while in operation, an electric energy source coupled to the fan unit via a cable, and an adjustable adapter radially coupled to outer perimeter of the enclosure of the fan unit, the adjustable adapter is so configured to be fit over an opening of the wind musical instrument's tubular body, where moistures accumulated inside the wind musical instrument are desired to be dried by the moisture drying device, which is deployed into the tubular body by inserting the fan unit into the opening.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: January 31, 2012
    Inventor: Shun-Hwa Chang
  • Patent number: 7795522
    Abstract: Wind musical instrument moisture drying devices are disclosed. The device includes a core member, a base member and an optional flexible adaptor member. The core member includes a hollow enclosure, a fan, an electric energy source and a fan operations control unit. The fan is mounted on top of the hollow enclosure, while the electric energy source and the fan operations control unit are housed inside. The base member contains at least one extrusion element located on the surface of the hollow enclosure substantially near the bottom. The extrusion element is configured to be orientated radially outward from the centerline of the hollow enclosure. The core member and the base member can be fixedly connected to each other, or connected via a connecting device. The flexible adaptor member is configured for receiving the based member to be flexibly adjusted or reshaped to be snuggled with inside surface of a wind musical instrument.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: September 14, 2010
    Inventor: Shun-Hwa Chang
  • Patent number: 7439430
    Abstract: A device for keeping the D# (D Sharp) tone hole open hence corresponding pad cup of a saxophone drier is described. According to one exemplary embodiment of the present invention, the device is a key clamp for holding down the D# key such that the D# pad cup can be kept open when the saxophone is not being played. The device is made of a continuous wire having a first segment having a first end, and a second segment having a second end, said first segment and said second segment are oriented substantially perpendicular to each other but non-coplanar, wherein said first segment has a form of an unsymmetrical S-shape, and said second segment has a form of a substantially closed loop.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: October 21, 2008
    Inventor: Shun-Hwa Chang
  • Patent number: 7030306
    Abstract: Devices for removing and separating moisture from interior passage of woodwind musical instruments are disclosed. According to one aspect of the present invention, 1) a de-moisturizing device includes a pocket sewed onto one side of the device to provide storage for the device hanging outside of an instrument carrying case, thus keeping the moisture absorbed by the swab re-moisturize the instrument; 2) a de-moisturizing device contains a closed loop affixed at one end of the device for holding a moisture absorbent fabric for removing moisture from the interior passage of woodwind instruments; and 3) a de-moisturizing device contains a plurality of moisture absorbent desiccant gels in an elongated hollow porous tube for removing moisture from the musical instruments.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: April 18, 2006
    Inventor: Shun-Hwa Chang
  • Patent number: 6130376
    Abstract: A universal split ring ligature that is versatile enough to fit differing sized mouthpieces. The ligature of the invention accomplishes this by comprising two elongated inverted U-shaped ring retaining bars that have at least one but preferably two or more apertures disposed therein through the vertical side faces of the U-shape ring retaining bars. Multiple sized metallic (or non-metallic equivalent such as plastic, nylon, etc.) rings or bands having concentric apertures disposed in their opposite ends may be inserted within the U-shaped retaining bars and whereby these opposite ends of the multiple sized rings or bands are drawn together by use of suitable thumbscrews penetrating through said cooperating band and U-shaped ring retaining bars' apertures, so as to unyieldingly embrace and clamp a reed that may be disposed between the ring or band and the mouth piece of the wind instrument.
    Type: Grant
    Filed: April 3, 1999
    Date of Patent: October 10, 2000
    Assignee: Shun-Hwa Chang
    Inventor: Shun-Hwa Chang
  • Patent number: 6016142
    Abstract: A processor is connected to a display screen to generate a screen display of individual characters in groups together with the selector indication. Such characters typically belong in a language set, e.g., English, Japanese, Greek, etc. The processor receives from the numeric keypad a user selection of a number "1-9" that is associated with a particular one of the individual characters in a group highlighted by the selector indication. An index-and-fetch mechanism, typically implemented as a computer program sub-routine, provides for an indexed fetch of a digital data representation in a font memory of a character indexed according to the number "1-9". The fetched digital data is then available for more general use by a larger computer system, for example in the form of an "ASCII" output character.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: January 18, 2000
    Assignee: Trimble Navigation Limited
    Inventors: Shun-Hwa Chang, Joseph V. R. Paiva, Alan Henry Withington
  • Patent number: D548271
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: August 7, 2007
    Inventor: Shun-Hwa Chang
  • Patent number: D891512
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 28, 2020
    Inventor: Shun-Hwa Chang