Patents by Inventor Si-Jiu Liu

Si-Jiu 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).

  • Wrist writing instrument
    Patent number: 5584195
    Abstract: A wrist writing instrument which can be conveniently carried on a wrist like a bracelet and writes as a regular pen, comprises two major parts: First, a partially reinforced flexible barrel or a partially sectionalized barrel (34), with a plurality of rigid tubular sections and a continuous reinforcing member on which the sections are serially connected and reinforced along one side of the barrel. The reinforcing member is a structure or of a material which is flexible laterally but substantially rigid under longitudinal stretch. The above barrel can only be bent towards the reinforced side, the flexible side, and can not be bent towards the other three sides, the stiff sides. Second, a stiffening means (44) which structurally has at least one bendable side and at least one non-bendable side, is inserted into and pivotally mounted in the barrel (34) for a releasable stiffening of the wrist writing instrument.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 17, 1996
    Inventor: Si-Jiu Liu
  • Somatic embryogenesis and plant regeneration of cacao
    Patent number: 5312801
    Abstract: The present invention provides a method for regeneration of somatic embryos from non-zygotic or zygotic tissue. The invention also provides a means for regeneration of cacao plantlets and plants from somatic embryos.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: May 17, 1994
    Assignees: DNA Plant Technology Corporation, Hershey Foods Corporation
    Inventors: Maro R. Sondahl, Zhenghua Chen, Thomas B. Sereduk, Claudia M. Bellato, Si-Jiu Liu, Alvina Bragin