Patents by Inventor Daniel Chang

Daniel 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: 5932635
    Abstract: Fiber-reinforced prepregs with superior tack containing thermosetting resin systems containing particulate, elastomers having a Tg of 25.degree. C. and below, as well as the composites prepared therefrom are disclosed.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: August 3, 1999
    Assignee: Cytec Technology Corp.
    Inventors: Jean Lee, Albert Kuo, Jack Douglas Boyd, Daniel Chang
  • Patent number: 5861851
    Abstract: A mobile-phone antenna device capable of insertion connecting directly to an external antenna, wherein, on the bottom of the exposed portion of the body of a fixed antenna thre is provided with an enlarged base of suitable size with one side thereof being provided with a socket; the base and the lateral socket are arranged to be higher slightly than the top surface of the mobile-phone, so that the socket can be connected with a corresponding plug on the external antenna. The antenna of the whole mobile-phone thus can be connected with the external antenna directly, this can eliminate inconvenience induced from repeated and optional insertion in and pulling out different antennae.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: January 19, 1999
    Assignee: Auden Technology Mfg. Co., Ltd.
    Inventor: Daniel Chang
  • Patent number: 5836005
    Abstract: A mobile telephone antenna including an alloy wire rod moved in a metal socket in a mobile telephone at the top, the alloy wire rod having a bottom end fixed with a first axial metal element, and a top end inserted through a second axial metal element, which is mounted in a stepped locating member inside an antenna cap, an insulative sleeve mounted around the top section of the stepped locating member and defining a space on the inside above the top section of the stepped locating member, a matching coil mounted around the stepped locating member and the insulative sleeve and stopped between the bottom section of the stepped antenna and the inside wall of the antenna cap, and a contact terminal fixedly fastened to the top end of the alloy wire rod and moved in the space between a first position in which the antenna terminal disposed in contact with the second axial metal element and the stepped locating member and the mobile telephone antenna is collapsed, and a second position in which the antenna terminal i
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: November 10, 1998
    Assignee: Auden Technology Mfg.Co. Ltd.
    Inventor: Daniel Chang
  • Patent number: 5809135
    Abstract: A press locking connector for the antenna of a mobile-phone, the connector is more suitably connected to the antenna of a car and a mobile-phone and is formed a sheet member having at the upper portion thereof a collar with a diameter size coincident with that of the shaft of the antenna, the collar has an opening of suitable size; a hook is provided beside and at a slightly lower portion from the collar, a plug contact device is inserted in a through hole near the bottom of the sheet member, so that the collar opening can be aligned with the antenna and is clamped by a force exerted forwardly from behind on the shaft of the mobile-phone, the hook will snap hook into a recess provided on the top of the mobile-phone, the plug contact device is connected to a socket contact on the mobile-phone by a force exerted in one single direction.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: September 15, 1998
    Assignee: Auden Technology Mfg. Co., Ltd.
    Inventor: Daniel Chang
  • Patent number: 5694594
    Abstract: A networked data-handling system including a plurality of processor-database units is disclosed in this invention. Each processor-database unit includes a many structured data objects. Each structured data object contains retrievable user requested data stored in the data base of that unit. The networked system includes an user interface for allowing an user to enter and modify a plurality of query requests and link instructions. The networked system further includes a link generator for receiving and executing the query requests and the link instructions for generating links between the structured data object distributed among the networked processor-database units for retrieving the retrievable user requested data from the linked structured data object The link generator further includes a user profile generator for accumulating and employing the query requests and link instructions for generating a user profile filtering file.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 2, 1997
    Inventor: Daniel Chang
  • Patent number: 4975595
    Abstract: A circuit is described for functioning as a transparent latch, a latch where the data is determined by the state of a data signal at the time a signal changes state, a D-type flip-flop, and a scan path element. The mode of operation of the circuit is determined by the condition of respective ones of a set of control signals.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: December 4, 1990
    Assignee: National Semiconductor Corporation
    Inventors: Scott Roberts, Daniel Chang
  • Patent number: 4817051
    Abstract: A bipolar RAM circuit that can be expanded to provide as many ports as desired has separate read and write ports. Each read port comprises two transistors whose collectors are respectively connected to bit lines for that port and whose emitters are commonly connected to a word line. Each write port comprises a pair of transistors whose collectors are respectively connected to the data latch within the cell, whose bases are tied to a pair of bit lines and whose emitters are connected in common to a word line for that write port. To write information into the cell, current is either steered from a standby current path to a desired word line, or a larger write current is steered to the selected word line, causing the data in the cell to be determined by the differential voltage present on the bit lines for the write port.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: March 28, 1989
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Daniel Chang