Writing Implement Patents (Class 211/69.1)
  • Patent number: 10492583
    Abstract: A storage container is provided that exhibits an optical illusion that some of the items stored in the container have disappeared in all or in part.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: December 3, 2019
    Inventor: Anthony B Potter
  • Patent number: 10361021
    Abstract: A system and method for magnetic levitation. In one embodiment, a magnetic levitation base together with a magnetic levitation affecting element that is located to the side of the levitation base support the magnetic levitation of a spinning magnetic top. In one embodiment, the levitation affecting element may comprise one or more magnets similar to that of the levitation base. A mass of the top and a tilt of the levitation base that may be required for magnetic levitation may be adjusted by adjusting the levitation affecting element (e.g. altering its position and/or the strength of its magnetic field.) The general direction of a tilt may be reversed by changing the magnetic north-south direction (e.g. turning over or reversing the electromagnetic current) of the levitation affecting element.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: July 23, 2019
    Inventor: George Farber
  • Patent number: 9778700
    Abstract: A sheath, or an encapsulated sheath, within tablet computers, smart phones, and similar electronic devices, or with enclosures for such electronic devices that would enable the seamless latching and unlatching of electronic pens of various sizes and thicknesses to such devices, or enclosures to such devices, through the pens' integrated flexible clips.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: October 3, 2017
    Assignee: JZM Intellectual Holdings, Inc.
    Inventor: Joseph A. Zaloom
  • Patent number: 9731528
    Abstract: A recording apparatus includes an apparatus main body portion that contains a recorder that performs recording on a recording medium, and a panel having a display unit that displays various information and being capable of opening and closing an upper portion of the apparatus main body portion by pivoting about a first pivot shaft. The panel has an outer perimeter that includes two short sides and two long sides. The display unit has an outline that includes two short sides and two long sides and is provided on the panel so that a longitudinal direction of the display unit coincides with a longitudinal direction of the panel. The longitudinal direction of the panel intersects a direction of the first pivot shaft about which the panel pivots.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: August 15, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Hisayuki Akahane, Naoki Horie, Hitoshi Igarashi
  • Patent number: 9646520
    Abstract: A vertically oriented support member has a circumference. A flag has an interior edge and an exterior edge separated by a length. The flag has an upper edge and a lower edge separated by a height. The flag has a first surface and a second surface. First fasteners are on the first surface adjacent to the interior edge of the flag. Second fasteners are on the first surface parallel with and laterally spaced from the interior edge. The second fasteners are spaced from the first fasteners by a distance at least equal to the circumference of the support member. A portion of the flag between the first fasteners and second fasteners is secured to and encompasses the support member. Indicia is provided on the flag. The indicia is closer to the exterior edge than to the interior edge.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: May 9, 2017
    Inventor: Robert K. Mokros
  • Patent number: 9249924
    Abstract: The present invention will provide a mobile device retention unit which combines the protective quality of a case as well as the utility of an adjustable mount onto a desk and will enhance the quality of the audio produced. Furthermore, the present invention will allow for the integration of the rising popularity of mobile devices into a school or work setting. This is accomplished by creating a case that mounts onto a desk, while allowing for an adjustable angle and easy accessibility.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: February 2, 2016
    Inventor: Paul Martin
  • Patent number: 8405641
    Abstract: A stylus includes an expansible structure. A chamber is formed inside the expansible structure. The stylus further includes an inner body installed inside the chamber in a movable manner relative to a first direction for pressing the expansible structure when moving in the first direction so that the expansible structure expands in a second direction.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: March 26, 2013
    Assignee: Wistron Corporation
    Inventor: Tien-Chung Tseng
  • Publication number: 20130043200
    Abstract: A portable cushion tray includes a cushion coupled to a tray. The tray has a first maximum perimeter. The cushion has a second maximum perimeter. The first maximum perimeter is one of the same as the second maximum perimeter and disposed inside of the second maximum perimeter. The portable cushion tray is used as a furniture accessory and selectively provides each of a pillow and a working surface for use with furniture.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 21, 2013
    Inventor: Dan R. Johnson
  • Publication number: 20120223035
    Abstract: An organizational music stand architecture for practicing or performing, while at the same time organizing and storing various accessories for music. The stand comprises a base section, two side sections, and a back section secured together. An accessory plate assembly, situated at the top of the unit, is secured to the two side sections. A music rest platform is secured to the accessory plate assembly so as to display objects in a near vertical position. The height of the base section is designed for placement of the organizational stand on a floor surface. Typically, the organizational stand would also comprise wheels, positioned at the bottom of the base section toward the rear of the stand, enabling the stand to be rolled on the wheels to another location. There would also be at least one or two drawers, such as a utility drawer and a hanging-file drawer.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 6, 2012
    Inventor: Ted N. Kelley, III
  • Publication number: 20120195673
    Abstract: The present invention is directed to a support for hand-held instruments providing for display of an image sheet in both a deployed or in use position and a raised or stored position. The present invention is available for use across a variety of applications that utilize hand-held instrument where an image display is desired. Uses include but are not limited to hand-held device such as writing instruments, toothbrushes, razors, and the like. The present invention provides for a leg assembly positioned near one end of the hand-held instrument, wherein the leg assembly can extend or pivot from the stored position to a use position for the purpose of holding and stabilizing the instrument on a horizontal surface and positioning the instrument in an angled-upward direction to allow for ease of grasp by a user while simultaneously displaying an image within an image holder of the leg assembly.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 2, 2012
    Inventors: Matthew L. Brooks, Daniel J. Silverman, Jeffrey S. Brooks
  • Patent number: 7980387
    Abstract: An expandable storage case is disclosed for storing various writing utensils. The storage case includes a base, an inner carousel, a top carousel, and a lid. The base, the inner carousel, and the top carousel are connected in a telescoping manner such that the storage case may be expanded from a collapsed position to an expanded, in-use position. The storage case includes a locking mechanism to selectively secure the storage case in the expanded position.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: July 19, 2011
    Assignee: Crayola LLC
    Inventors: James William Allen, Robert Henry, Pam Dozier, Cara Skrips
  • Publication number: 20110094983
    Abstract: A spinning school supply storage bin includes a base; a receptacle, rotatably attached to the base; a plurality of colored compartments attached to the receptacle, each compartment adapted to store at least one of the plurality of items; and a handle attached to the base that allows the receptacle to be urged to rotate so as to present one of the plurality of compartments for access. The colors of the compartments generally correspond to the colors of the items. Each compartment is adapted to store at least one of the colored items such as crayons.
    Type: Application
    Filed: June 11, 2010
    Publication date: April 28, 2011
    Inventor: Erma Jean Burnside-Hall
  • Publication number: 20110049068
    Abstract: A storage rack is provided that exhibits an optical illusion that some of the items stored in the rack have disappeared in all or in part.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 3, 2011
    Inventor: Anthony B. Potter
  • Patent number: 7819600
    Abstract: A marker pen storage system comprising a housing having a plurality of receptacles for receiving marker pens, each receptacle formed to include an upper and lower cavity, the upper cavity located at the opening of the receptacle and formed to include a first upper inclined section and a first lower inclined section, wherein the first upper inclined section has a greater incline than the first lower inclined section, said lower cavity sized to receive a writing end of a marker pen, receptacle openings are formed immediately adjacent so as to create guidance walls between each receptacle, and prevent a flat upper surface from being formed between adjacent receptacles, and a snap ring formed between the upper and lower cavities, wherein a relatively airtight seal is formed around the writing end of a marking pen when it is completely inserted into the lower cavity.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 26, 2010
    Inventor: Claude LaBrasca
  • Patent number: 7458474
    Abstract: An apparatus is disclosed for an implement retainer comprising a holder having a base and a plurality of flexible pins projecting from the base. The holder is flexible and manufactured of a resilient material. The pins have bulbous, conical, convex tips, and holes may be disposed between the pins to isolate and suspend the pointy tips of implements. The pins also have a frusto-conical convex base which guides and retains the end of an implement. A low bridging wall is provided between each adjacent pin which guides an implement tip into the hole and also retains the end of an implement. In use, implements are inserted between the pins and contact against the bulbous, convex tip of the pins, which are displaced by the implement, then press against the implement, thereby retaining the implement in place.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: December 2, 2008
    Inventor: Conrad Wayne Bewsky
  • Patent number: 7419320
    Abstract: A marker pen storage system comprising a housing having a plurality of receptacles for receiving marker pens, each receptacle formed to include an upper and lower cavity, the upper cavity located at the opening of the receptacle and formed to include a first upper inclined section and a first lower inclined section, wherein the first upper inclined section has a greater incline than the first lower inclined section, said lower cavity sized to receive a writing end of a marker pen, receptacle openings are formed immediately adjacent so as to create guidance walls between each receptacle, and prevent a flat upper surface from being formed between adjacent receptacles, and a snap ring formed between the upper and lower cavities, wherein a relatively airtight seal is formed around the writing end of a marking pen when it is completely inserted into the lower cavity so as to prevent circulation of air to the writing end of an inserted marking pen, and the snap ring produces a snap feel and sound when a marker pen
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: September 2, 2008
    Inventor: Claude LaBrasca
  • Patent number: 6910578
    Abstract: An accessory holder for releasably storing tool implements on a portable hand power tool. The holder includes a base strip of durable flexible material. An attachment member is carried by the base strip for releasably attaching the base strip to the tool. An elastic band is carried by the base strip to form a plurality of constricting sleeves for releasably engaging tool implements. A bit tube is disposed in at least one of the constricting sleeves for receiving tool implements. A restraining magnet is included in the bit tube for magnetically engaging tool implements and accessories in the tube. A utility magnet is carried by the elastic band for magnetically engaging tool implements for temporary storage. Accordingly, an accessory holder is provided for releasably storing tool implements on a portable power tool for quick and convenient access.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: June 28, 2005
    Inventor: Jonathan S. Stern
  • Patent number: 6759012
    Abstract: A pin holder for a microarraying apparatus comprising at least one group of bodies of circular cross-section packed together to form a network of pathways in gaps between the bodies; and an array of pins slidably arranged in the pathways. The pins are held in parallel to each other automatically as a result of the self organized packing of the circular cross-section bodies, which may be spheres, for example ball bearings, or cylindrical, for example needle roller bearings. The pin holder provides for very accurate parallel alignment of the pins, low pin friction, as well as low cost and complexity of manufacture.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: July 6, 2004
    Assignee: Genetix Limited
    Inventors: James Keith Haslam, John Richard Andrews
  • Patent number: 6735825
    Abstract: In the secured pen holder of U.S. Pat. No. 6,167,596, a first resilient engagement between cover and base provides an indication of the replacement state in which the pen assembly can be replaced. A second resilient engagement between cover and base provides an indication of the use position in which the pen is held within the holder for use. A third resilient engagement between transport and base provides an indication that the transport is resiliently held in place at a position when the transport wall holds the pen tether and stop in place during the use state.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: May 18, 2004
    Inventors: James Berman, Ben Aaron Berman
  • Patent number: 6729480
    Abstract: A strap assembly including at least one strap configured to removably mount on a handle portion of a drill, to removably twist 180° and mount on a rear end portion of the drill, and to removably mount on a rear body portion of the drill.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: May 4, 2004
    Inventor: Donald Blake
  • Patent number: 6685034
    Abstract: A device for retaining articles including a support surface having a holding means which may be finger like projections and at least one holding zone defined by a space between adjacent holding means and whereby the adjacent holding means are adapted to hold an article in the holding zone.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: February 3, 2004
    Inventor: Michael Charles Cooke
  • Publication number: 20040016710
    Abstract: A device for holding a plurality of capped writing tools that facilitates the artistic process of artists that require mobility and quick accessibility to their tools. The device consists of a generally planar base with the shape of an artist's palette. The base has a plurality of holes arrayed on its surface with a twist to lock capability. Inserts that interface with the twist to lock or snap into the holes provide the capability to accept a wide variety of capped writing tools. The inserts have threaded holes or have integrally molded caps to accept the capped writing tools. The inserts can provide additional functionality such as providing holding for cleaning wipes. The device is useable by both right- and left-handed artists. The device allows the artist to carry an assortment of tools chosen by the artist in the arrangement desired by the artist for quick accessibility.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 29, 2004
    Inventor: Scott Owen Kjelgaard
  • Patent number: 6663305
    Abstract: A holder that is designed to hold within a single molded structure up to four marking implements such as a carpenter's pencil or a lumber crayon. The marker holder, which is configured to resemble a Greek cross, consists of a vertical tube having a rectangular or circular cross-section, a right wall and a left wall. To the two walls is respectively attached a right horizontal tube and a left horizontal tube. Each tube includes a set of marker support tabs that grip and accessively retain the carpenter's pencil and the lumber crayon.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: December 16, 2003
    Inventor: Peter D. Poulos
  • Patent number: 6658702
    Abstract: A writing implement holder includes a case having a bottom wall, upstanding front and back walls, and side walls, and defining an open top. A lid is pivotally mounted to the case for selective movement between open and closed configurations. A clip member is attached to the lid for selectively attaching the case to a planar surface such as a music stand. The lid includes longitudinally extending channels slidably coupled to guide pins mounted to respective case side walls. The guide pins provide an axis about which the lid is pivotally movable between open and closed configurations. The channels enable the lid to be slidably moved to a locked configuration.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: December 9, 2003
    Inventor: Leonardo Tucherman
  • Patent number: 6591990
    Abstract: A highly functional desk organizer includes a base (10) with a bottom surface (12) and a top surface (16), (108) with a thickness that is relatively small in relation to the periphery of the base (10). An array of three pockets (26), (28), (30); (110), (112), (114) is located on the top surface (16), (108) that includes a relatively shallow pocket (28), (112) in the center of the array and is adapted to receive and provide support for a note pad, and the two side pockets (26), (30); (110), (114) on each side of the central pocket (28), (112) which are deeper than the central pocket (28), (112) and adapted to receive paper clips, rubber bands, business cards or the like. Two cylindrical pockets (32), (34); (116), (118) are located in the top surface (108) and are substantially identical and relatively deep in relation to the central pocket (28), (112).
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: July 15, 2003
    Assignee: Thermos L.L.C.
    Inventors: John Lanman, John Bergeron
  • Patent number: 6581768
    Abstract: A desktop storage device is provided comprising an elongated platform element adapted to be inserted and retained within an elongated container. The elongated platform element includes a lower platform upon which said pens, pencils and similar elongated objects rest, and an upper platform connected to the lower platform by means of an elongated connecting member. Disposed within the upper platform is at least one aperture, said aperture serving to allow the pens or pencils to be inserted therethrough, and further allowing the user to grasp the elongated platform in order to slide it out of the container. The elongated platform element is adapted to be inserted into and securely retained within the container. Pens and pencils may be inserted through the aperture in the upper platform, and thereupon come to rest on the lower platform, being bound by the interior surface of the container.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: June 24, 2003
    Assignee: Loop Licensing Co., Inc.
    Inventors: China Young, Jude Pauli
  • Patent number: 6550737
    Abstract: A beverage holder assembly for the office area that includes a vertical clamp for attachment to a supporting object such as a computer monitor. A first vertical leg carries a first clamping jaw and a second vertical leg carries a second clamping jaw, with both jaws horizontally disposed. The jaws and the legs are locked in position by a screw-type transverse blade and a serrated strip lock. The beverage holder is cylindrical and has a sleeve slidable on the legs to provide holder height adjustment.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: April 22, 2003
    Inventors: Sanjay K. Sai, Nazir T. AliMohammad
  • Publication number: 20030057168
    Abstract: Penholder includes a hollow stepped holder base having a top center through hole and an expanded split lower section, a connector connected to the holder base at a top side to hold a cord member for hanging, and a shell coupled to the holder base and moved axially relative to said holder base and adapted to compress the split lower section of said holder base, said shell comprising an annular top defining a center through hole, through which said connector and the upper section of said holder base pass to the outside of shell, and an expanded lower section fitting over the tapered outer diameter of the split lower section of said holder base.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 27, 2003
    Inventor: Tien-Lin Lo
  • Publication number: 20030010728
    Abstract: A highly functional desk organizer includes a base (10) with a bottom surface (12) and a top surface (16), (108) with a thickness that is relatively small in relation to the periphery of the base (10). An array of three pockets (26), (28), (30); (110), (112), (114) is located on the top surface (16), (108) that includes a relatively shallow pocket (28), (112) in the center of the array and is adapted to receive and provide support for a note pad, and the two side pockets (26), (30); (110), (114) on each side of the central pocket (28), (112) which are deeper than the central pocket (28), (112) and adapted to receive paper clips, rubber bands, business cards or the like. Two cylindrical pockets (32), (34); (116), (118) are located in the top surface (108) and are substantially identical and relatively deep in relation to the central pocket (28), (112).
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventors: John Lanman, John Bergeron
  • Publication number: 20030000902
    Abstract: A holder for receiving and retailing tools, writing utensils, kitchen utensils and the like elongated articles (42) comprises a housing with an elongated slit (2, 3) for receiving the articles (42). Each slit (2, 3) is defined by a flexible lip (9 to 24) projecting from the respective elongated sides of said slit, and which are adapted to abut both sides of the article(s) in question. The holder comprises several rows of lips (9 to 24) extending substantially in parallel, where the lips are arranged in pairs opposite one another and present a mutually complementary, substantially wavy shape. The crests (25) and troughs (26) of each pair of lips (9 to 24) engage one another.
    Type: Application
    Filed: July 31, 2002
    Publication date: January 2, 2003
    Inventors: Anders Keis, Tore Hermansen
  • Publication number: 20020139764
    Abstract: A disassemblable rotary pen exhibition rack of the invention comprises a base plate, a support seat, a central shaft, a plurality of balls and a ball bearing cap, a rotary platform, and a paper holder to form a fashion exhibition rack after assembly. The rotary platform, sustained on the plurality of balls under the ball bearing cap, can rotate freely 360°. The rotary platform provides a plurality of pen holes to hold pens upright. While the rotary platform is rotating, the specific features and patterns are displayed to eyes of the visitors. Under the bottom of the base plate, there is a recess to contain the paper holder which can be drawn out the buyer wants to try writing of the pen on the paper.
    Type: Application
    Filed: March 27, 2001
    Publication date: October 3, 2002
    Inventor: Ming-Tay Hsu
  • Patent number: 6457593
    Abstract: A disassemblable rotary pen exhibition rack of the invention comprises a base plate, a support seat, a central shaft, a plurality of balls and a ball bearing cap, a rotary platform, and a paper holder to form a fashion exhibition rack after assembly. The rotary platform, sustained on the plurality of balls under the ball bearing cap, can rotate freely 360°. The rotary platform provides a plurality of pen holes to hold pens upright. While the rotary platform is rotating, the specific features and patterns are displayed to eyes of the visitors. Under the bottom of the base plate, there is a recess to contain the paper holder which can be drawn out the buyer wants to try writing of the pen on the paper.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: October 1, 2002
    Inventor: Ming-Tay Hsu
  • Publication number: 20020104771
    Abstract: A desktop storage device is provided comprising an elongated platform element adapted to be inserted and retained within an elongated container. The elongated platform element includes a lower platform upon which said pens, pencils and similar elongated objects rest, and an upper platform connected to the lower platform by means of an elongated connecting member. Disposed within the upper platform is at least one aperture, said aperture serving to allow the pens or pencils to be inserted therethrough, and further allowing the user to grasp the elongated platform in order to slide it out of the container. The elongated platform element is adapted to be inserted into and securely retained within the container. Pens and pencils may be inserted through the aperture in the upper platform, and thereupon come to rest on the lower platform, being bound by the interior surface of the container.
    Type: Application
    Filed: February 7, 2001
    Publication date: August 8, 2002
    Inventors: China Young, Jude Pauli
  • Patent number: 6382864
    Abstract: A folder for receiving papers or other loose articles comprising a side panel and a retaining tab made of a generally flexible material and mounted onto the side panel. The retaining tab has a pair of openings formed therein, the openings being shaped and located such that a writing instrument may be received therethrough such that the writing instrument is securely received in the retaining tab.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 7, 2002
    Assignee: The Mead Corporation
    Inventor: Marc L. Moor
  • Patent number: 6305864
    Abstract: A writing implement support system for releasably positioning a writing implement with respect to a recipient surface comprises a suction cup that has a generally hemispherical shape. The suction cup is configured to be compressed against a generally flat recipient surface. The compression forms a first bond having a holding force of an intermediate magnitude. A connector is located on the outer convex surface of the suction cup. A writing implement has a writing end and a non-writing end. A writing implement cap is configured to form a second bond with the writing implement. The second bond has a holding force of a weak magnitude. The cap is also configured to form a third bond with the connector. The third bond has a holding force of a strong magnitude.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: October 23, 2001
    Inventor: Michael H. Nguyen
  • Patent number: 6296127
    Abstract: A stationery organizer includes a rotary table supported on a base, the rotary table having an upright post, a plurality of stepped bushings respectively mounted on the upright post of the rotary table and longitudinally connected in a line, a screw cap fastened to the upright post to secure the stepped bushings to the upright post, and a plurality of springy plastic retainer flap elements detachably radially fastened to the stepped bushings around the upright post and closely attached to one another for holding stationery items in sector-like receiving space in each plastic retainer flap element or in between each two adjacent plastic retainer flap elements.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: October 2, 2001
    Inventor: Rong-Chun Tseng
  • Patent number: 6279753
    Abstract: A combination desk lamp, compact disc holder, beverage cup holder and desk organizer set includes a hollow base for supporting a desk lighting fixture mounted to the top of the base, an upright compact disc (CD) holder which is glued to the top of the base, a desk organizer and/or a beverage cup holder. The desk organizer includes a pencil holder removably disposed inside a tray which is glued to the top of the base and provided on the inside with a plurality of cone-shaped protuberances for frictional support. The tray may serve also as a beverage cup holder. The CD holder can also be provided with a beverage cup holder which attaches to the top of the CD holder via glue and a leg/aperture coupling. The top of the CD holder beverage cup holder includes a plurality of concentric interspaced raised surfaces to provide frictional support for a beverage cup.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: August 28, 2001
    Assignee: Lamps Plus, Inc.
    Inventor: Erik A. Swanson
  • Patent number: 6189711
    Abstract: A support device for receiving and supporting official device elements includes a casing rotatably secured on a base. The casing includes two groups of opposite partitions disposed in a peripheral wall for forming two or more spaces within the casing and for receiving the official device elements. The partitions are parallel to each other for forming one or more channels and for receiving discs or the like. The partitions each includes a curved inner end connected to each other for forming a barrel, and include a height greater than the peripheral wall for allowing the official device elements to be easily obtained.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: February 20, 2001
    Inventor: Chun Yuan Chang