Patents by Inventor Nai-Jen Chang

Nai-Jen 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: 10042801
    Abstract: A system for detecting universal serial bus (USB) device and method thereof are described. The system and method utilizes a USB controller to control a switch module and to detect the signal level of USB interface for determining whether the USB device is electrically connected to the host unit. Therefore, the system and method are capable of improving the power consumption of the host unit.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: August 7, 2018
    Assignee: GENESYS LOGIC, INC.
    Inventor: Nai-Jen Chang
  • Publication number: 20150143138
    Abstract: A system for detecting universal serial bus (USB) device and method thereof are described. The system and method utilizes a USB controller to control a switch module and to detect the signal level of USB interface for determining whether the USB device is electrically connected to the host unit. Therefore, the system and method are capable of improving the power consumption of the host unit.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 21, 2015
    Inventor: Nai-Jen CHANG
  • Publication number: 20150092519
    Abstract: A sphere-inscribed wheel-driven mobile platform for universal orientation includes an outer shell unit, a seismometer module, a level sensing module, a movable unit, and a bearing unit. The outer shell unit includes an inner spherical surface defining an accommodating chamber. The seismometer module is disposed in the accommodating chamber, and defines a central axis. The movable unit is mounted to the seismometer module, and includes two rotating wheel units. The bearing unit is mounted to the seismometer module, and includes a plurality of bearing members disposed around the central axis. The seismometer module and the inner spherical surface are spaced by the movable unit and the bearing unit. The seismometer module is rotatable about the central axis and a rotating axis perpendicular to the central axis.
    Type: Application
    Filed: July 8, 2014
    Publication date: April 2, 2015
    Inventors: Chau-Chang Wang, Hsin-Hung Chen, Nai-Jen Chang
  • Publication number: 20130344115
    Abstract: A method for repairing cartilage tissues includes the following steps: adhering a plurality of endothelial progenitor cells onto a scaffold to form a composition, and implanting the composition into an individual. The present invention also provides a method of cartilage defect treatment and a method for proliferating the cartilage tissues. The methods in accordance with the present invention are advantageous for safely and quickly repairing or proliferating cartilage tissues for disease treatment and physical function maintenance.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 26, 2013
    Inventors: Nai-Jen CHANG, Ming-Long YEH, Chih-Chan LIN
  • Publication number: 20130344114
    Abstract: A composition for repairing cartilage tissues includes a scaffold and a plurality of endothelial progenitor cells. The endothelial progenitor cells adhere on the scaffold. A method of making the composition for repairing cartilage tissue is also disclosed. This is advantageous for safely and quickly repairing cartilage tissues by using the composition and the manufacturing method thereof.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 26, 2013
    Inventors: Nai-Jen Chang, Ming-Long Yeh, Chih-Chan Lin
  • Patent number: 8512084
    Abstract: An underwater thruster includes a housing unit having a first opening, a cover unit connected to the housing unit and covering the first opening, a supporting unit connected to the housing unit, a motor having a driving shaft that extends through the first opening, a magnetic core unit connected to the driving shaft, a plurality of magnetic intermediate units disposed on the supporting unit and driven by the magnetic core unit, a magnetic surrounding unit driven by the magnetic intermediate units in a rotational speed smaller than the rotational speed of the magnetic core unit, and a propelling unit connected to the magnetic surrounding unit and having a plurality of angularly spaced-apart blades.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 20, 2013
    Inventors: Nai-Jen Chang, Shuo-Wen Chang, Cheng-Chi Huang
  • Publication number: 20080060338
    Abstract: An ergonomically designed gardening tool such as a rake has an elongated handle slidably and removably mounted to the tool head. A spike or an auxiliary gardening implement is mounted at the lower end of the handle such that the spike may be operated to secure the rake at an upright free standing position on a lawn or solid ground surface. The handle is secured to tool head with a latch mechanism which is operative to secure or release the handle from the rake head selectively. The removed handle with the auxiliary implement mounted thereon may also be used for various gardening tasks.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 13, 2008
    Inventor: William Nai-Jen Chang
  • Patent number: 6485076
    Abstract: A versatile attachment in the form of an elongated member having an obtuse angle is mounted on a shovel handle. The lower end of the elongated member is pivotally mounted in a cantilever manner to the lower portion of the shovel handle. The elongated member mounted with the obtuse angle portion of the elongated member located selectively either above or below the longitudinal axis of the shovel handle. A cross bar member is provided at the upper free end of the elongated member and a rotary wheel is rotatably mounted on the cross bar member. A strap is provided at the shovel handle and is operative for securing the attachment to the latter.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: November 26, 2002
    Inventor: William Nai-Jen Chang
  • Patent number: 6276645
    Abstract: This portable device is for holding and supporting a flexible waste collection bag in an open condition. The device has a frame consisting of two parallel side bars having a handle at one end and the free ends of the side bars are mounted to a lower supporting platform bar. A slider bar is slidably mounted on the side bars and located between the handle and the lower supporting platform bar. Both the slider bar and the supporting platform bar have a horizontal U-shaped channel. A flexible waste collection bag can be mounted to the device by wrapping two opposite sides of the lip portion of the bag on two securement bars and inserting the wrapped securement bars into the U-shaped channels in the slider bar and the supporting platform bar to secure the bag to the device. The slider is pushed upwards to maintain the bag in an open condition. Bags of a variety of different sizes may be mounted to the device by adjusting the position of the slider bar.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: August 21, 2001
    Inventor: William Nai-Jen Chang