Patents by Inventor Yue-Jun Lai

Yue-Jun Lai 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).

  • Dielectric resonator for negative refractivity medium
    Patent number: 8149181
    Abstract: A dielectric resonator for a negative refractivity medium, which is coupled to a plurality of substrates, comprises at least one crystal unit, at least one first crystal cube and at least one second crystal cube. The crystal units are arrayed on the substrate. On an identical substrate, each crystal unit has a first spacing with respect to one adjacent crystal unit and a second spacing with respect to another adjacent crystal unit. The first spacing is vertical to the second spacing. Each crystal unit has one first crystal cube and one second crystal cube. A third spacing exists between the first and second crystal cubes. The first and second crystal cubes have a permittivity greater than 20. The present invention adopts the negative refractivity medium to achieve lower dielectric loss. Further, the present invention features isotropy and has low fabrication cost and high industrial utility.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: April 3, 2012
    Assignee: National Tsing Hua University
    Inventors: Ta-Jen Yen, Yue-Jun Lai, Cheng-Kuang Chen
  • DIELECTRIC RESONATOR FOR NEGATIVE REFRACTIVITY MEDIUM
    Publication number: 20110050367
    Abstract: A dielectric resonator for a negative refractivity medium, which is coupled to a plurality of substrates, comprises at least one crystal unit, at least one first crystal cube and at least one second crystal cube. The crystal units are arrayed on the substrate. On an identical substrate, each crystal unit has a first spacing with respect to one adjacent crystal unit and a second spacing with respect to another adjacent crystal unit. The first spacing is vertical to the second spacing. Each crystal unit has one first crystal cube and one second crystal cube. A third spacing exists between the first and second crystal cubes. The first and second crystal cubes have a permittivity greater than 20. The present invention adopts the negative refractivity medium to achieve lower dielectric loss. Further, the present invention features isotropy and has low fabrication cost and high industrial utility.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 3, 2011
    Inventors: Ta-Jen Yen, Yue-Jun Lai, Cheng-Kuang Chen
  • 3-substituted methyl-2,3-dihydroimidazo 1,2-c!quinazoline derivatives, the preparation and use thereof
    Patent number: 5512677
    Abstract: The present invention provides a novel series of 3-substituted methyl-2,5-dihydroimidazo 1,2-c!quinazoline compounds. These compounds are found useful as an active ingredient for the treatment of hypertension and dysuria.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: April 30, 1996
    Assignee: National Science Council
    Inventors: Ji-Wang Chern, Guan-Yu Lu, Yue-Jun Lai, Mao-Hsiung Yen, Pao-Luh Tao
  • 3-substituted methyl-2,3-dihydroimidazo[1,2-C] quinazoline derivatives, the preparation and use thereof
    Patent number: 5340814
    Abstract: The present invention provides a novel series of 3-substituted methyl-2,3-dihydroimidazo[1,2-c]quinazoline compounds. These compounds are found useful as an active ingredient for the treatment of hypertension and dysuria.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: August 23, 1994
    Assignee: National Science Council
    Inventors: Ji-Wang Chern, Guan-Yu Lu, Yue-Jun Lai, Mao-Hsiung Yen, Pao-Luh Tao