Patents by Inventor Jih-Cheng Chang

Jih-Cheng 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: 5823573
    Abstract: The present invention is a new design for loose-leaf pages which can store for easy retrieval both photographs and corresponding films on the same page so that we can quickly get the right film for a particular photograph. The main structure of the present invention includes three sections of pockets for storing photographs and their corresponding film. The loose-leaf page includes a first section with six pockets that can store six photographs arranged in two columns and three rows on each page. The second section of the page has pockets with an open edge in the center for storing either three, four, five or a maximum of up to six consecutive films. The third section of the page has a pocket for holding a single film or two consecutive films.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: October 20, 1998
    Inventor: Jih-Cheng Chang
  • Patent number: 5764141
    Abstract: A motor vehicle warning signal light assembly is installed within a car and near a back window, which includes stop signal light, an invertedly disposed V-shaped signal light, a control switch, a leftward turn signal light, and a rightward turn signal light. The stop signal light is synchronously operated with the stop lights of the motor vehicle. The invertedly disposed V-shaped signal light and the stop signal light form a triangle signal light, which can be manually turned on by the control switch. The leftward turn signal light and the rightward turn signal light of the assembly are respectively operated with the leftward turn signal light and rightward turn signal light of the motor vehicle.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: June 9, 1998
    Inventor: Jih-Cheng Chang
  • Patent number: 5041813
    Abstract: A collapsible, triangular frame is placed on the back side of an automobile to be used as a "disabled" sign when the automobile breaks down. The triangular frame is composed of a base member and two side members rotatably connected to two ends of the base member. A driving device operable by a control device is provided onto the base member to operate the two side members from a horizontal position to an erected position, and from the erected position to the horizontal position, as desired. The triangular frame is provided with signal lights which are turned on when the triangular frame is erected, and are turned off when it is collapsed to the horizontal position.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: August 20, 1991
    Inventor: Jih-Cheng Chang
  • Patent number: 4965546
    Abstract: A warning device to alert passers-by before opening an automobile door is proposed. The warning device has a seatbelt switch operable in association with a seatbelt fastener, a door switch operable in association with a door lock, warning lights visible to passers-by, and relays through which warning lights are turned on when the seatbelt fastener is disengaged or the door lock is unlocked.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: October 23, 1990
    Inventor: Jih-Cheng Chang
  • Patent number: 4833448
    Abstract: A warning device for alerting passers-by, particularly oncoming motorists, before opening an automobile door will be installed on an automobile to produce a warning sign visible by passers-by. The device includes a door lock for locking and unlocking an automobile door, a door lock switch operable in association with the door lock, a relay operable by the door lock switch to turn on warning lights installed at the front end and rear end of the automobile, and a blinker for causing the warning lights to blink.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: May 23, 1989
    Inventor: Jih-Cheng Chang