Jong Ye Hong

20020195463, Dec 26, 2002

May 30, 2002

10/157075

Minoru Seki - Tokyo, JP
Ryusuke Aoyama - Nagareyama-shi, JP
Jong Hong - Pasadena CA, US
Teruo Fujii - Tokyo, JP
Isao Endo - Tokyo, JP

B67D005/60

222/134000

In order to be capable of handling quantitatively a liquid in a simple structure by only easy operations, a control mechanism comprises a first flow channel and a second flow channel each extending along a predetermined direction; and a third flow channel having a thinner thickness than that of the first flow channel and that of the second flow channel; the above-described third flow channel being opened on flow channel walls of the first flow channel and the second flow channel, respectively, whereby the third flow channel links the first flow channel to the second flow channel; a liquid introduced into the first flow channel being pulled in the third flow channel due to a capillary phenomenon through an opening of the third flow channel opened on the flow channel wall of the first flow channel, and then, the liquid remained in the first flow channel being removed to prepare a droplet having a volume corresponding to a capacity of the third flow channel.

20050053952, Mar 10, 2005

Oct 2, 2003

10/678946

Jong Hong - Pasadena CA, US
Vincent Studer - Paris, FR
W. Anderson - San Marino CA, US
Stephen Quake - San Marino CA, US
Jared Leadbetter - Altadena CA, US

California Institute of Technology - Pasadena CA

C12Q001/68
C12M001/34

435006000, 435287200

Nucleic acid from cells and viruses sampled from a variety of environments may purified and expressed utilizing microfluidic techniques. In accordance with one embodiment of the present invention, individual or small groups of cells or viruses may be isolated in microfluidic chambers by dilution, sorting, and/or segmentation. The isolated cells or viruses may be lysed directly in the microfluidic chamber, and the resulting nucleic acid purified by exposure to affinity beads. Subsequent elution of the purified nucleic acid may be followed by ligation and cell transformation, all within the same microfluidic chip. In one specific application, cell isolation, lysis, and nucleic acid purification may be performed utilizing a highly parallelized microfluidic architecture to construct gDNA and cDNA libraries.

56419023, Jun 24, 1997

May 15, 1996

8/648439

Jong Un Hong - Cerritos CA

B60C 2302

731468

The present invention a tire valve cap pressure gauge comprises a hollow, cylindrical cap made of transparent material and having a series of pressure level markings, an inner piece and a valve stem. The inner piece having a cap top at its top end and a cap pin at its lower end is concentrically placed in the cylindrical cap, which is made of transparent material, and an inflatable diaphragm is internally attached to the inner piece and the cylindrical cap. The cap is then threadably attached to a valve stem found on typical tire, whereupon depressing the top portion of the inner piece causes the lower end of the inner piece to depress valve core inside the valve stem and thereby releasing the air inside the tire which in turn inflates the diaphragm. An indicator freely placed on the diaphragm rises with the inflating diaphragm and gives a tire pressure reading.