Patents by Inventor Jianguo Liu

Jianguo 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).

  • Publication number: 20040108655
    Abstract: The present invention is an educational and recreational apparatus having a geometrical structure or game device, which can be any structure of geometrical shapes with a plurality of nodes composed by edges. The game device can be designed as two-dimensional or three-dimensional, single-plane or multi-plane, latticed or non-latticed geometrical structure. Said nodes of a game device are categorized by the degree of freedom defined by the number of edges connected to the node. The game is played with two groups of spherical game pieces and begins with no game pieces positioning on the game device. While in playing, each player put a game piece in turn on nodes of the game device. Said game piece cannot be moved or removed after being put on a node until it is captured by opponent pieces. The player who occupies more nodes than opponent wins the game.
    Type: Application
    Filed: April 11, 2002
    Publication date: June 10, 2004
    Inventor: Jianguo Liu
  • Patent number: 6146553
    Abstract: The present invention provides a compound having the chemical formula of R.sub.2 MB.sub.10 O.sub.19, wherein R is one or more elements selected from the group consisting of rare-earth elements or Y; M is selected from the group consisting of Ca, Sr, Ba, a single crystal of the compound, a producing method and uses thereof. The compound is congruently melting, which is suitable for producing large size single crystal of R.sub.2 MB.sub.10 O.sub.19 with melt methods, especially pulling method, at a low cost. The crystal resulted therefrom has the same NLO effect as LBO with superior mechanical properties, and it is antideliquenscent. The crystal of the present invention can be used for the frequency-conversion of blue-green wavelength lasers.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: November 14, 2000
    Assignee: University of Science and Technology of China
    Inventors: Yicheng Wu, Jianguo Liu, Peizhen Fu, Junxin Wang, Guiwen Zhao