Patents by Inventor Ling Y. Liu

Ling Y. Liu 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: 10022873
    Abstract: The present disclosure provides apparatuses, methods and systems operable to provide transformable living spaces. The system includes a chassis and a configurable unit movably coupled to the chassis for at least one of translation and rotation with respect to the chassis. The system also includes at least one drivetrain assembly movably coupling the configurable unit to the chassis. The system includes at least one actuator coupled to the configurable unit by the at least one drivetrain assembly. The system also includes at least one robotic controller communicatively coupled to the at least one actuator.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 17, 2018
    Assignee: Ori Inc.
    Inventors: Hasier Larrea-Tamayo, Ling Y. Liu, Kent Larson, William Lark
  • Patent number: 5287377
    Abstract: The present invention is the use of coupled quantum wells in the active region of a semiconductor laser to modulate the frequency and amplitude of the light output of the laser. In a particular embodiment of the present invention the coupled quantum wells are contained in a graded index of refraction semiconductor double heterostructure laser. The active region of this tunable laser consists of two quantum wells having a width of approximately 50 Angstroms or less which are separated by a barrier layer having a width of approximately 20 Angstroms or less. The quantum well material is intrinsic GaAs and the barrier layer is Al.sub.x Ga.sub.1-x As wherein x=0.23. The active region is surrounded by the double heterostructure in which one side is doped p-type and the second side is doped n-type. The resulting laser is a p-i-n type structure.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: February 15, 1994
    Assignee: International Business Machines Corporation
    Inventors: Tadashi Fukuzawa, Ling Y. Liu, Emilio E. Mendez