Kwang Ja Lee

7935961, May 3, 2011

Oct 19, 2007

11/976090

Sang Yoon Lee - Seoul, KR
Alan J. Heeger - Santa Barbara CA, US
Kwang Hee Lee - Goleta CA, US
Shinuk Cho - Goleta CA, US

Samsung Electronics Co., Ltd. - Gyeonngi-do

H01L 51/05

257 40, 438 99, 257E51006

Disclosed herein is a multi-layered bipolar field-effect transistor, including a gate electrode, a gate insulating layer, an electron transport layer, a hole transport layer, a source electrode, and a drain electrode, in which an intermediate separating layer is formed between the electron transport layer and the hole transport layer, and a method of manufacturing the same. The multi-layered bipolar field-effect transistor has advantages in that, since a P-channel and a N-channel are effectively separated, the electrical properties thereof, such as current ON/OFF ratio, electron mobility, hole mobility, and the like, are improved, and, since a device can be manufactured through a solution process without damaging layers, the processability thereof is improved.

20050202369, Sep 15, 2005

Mar 12, 2004

10/800375

Kwang Lee - Burbank CA, US

A61C013/12

433180000

An improved pontic and pontic assembly utilized in the investment process in the making of investment mold castings for frameworks for dental prosthesis including dental bridges and method of manufacturing frameworks casting for dental prosthesis including dental bridges. The pontic assembly comprising a pair of wax copings having a space therebetween formed from a stone model of an area of a patient's teeth including a pair of abutment teeth. A wax coated enforcement bar connecting the pair of wax copings, and prefabricated wax structures connecting to the enforcement bar. The enforcement bar being spirally threaded.

20050236551, Oct 27, 2005

Jan 22, 2004

10/762717

Kwang Lee - Burbank CA, US

B22C009/08

249054000, 249105000

An improved spruing assembly utilized in the investment process in the making of investment mold castings. The spruing assembly comprising a base unit engaged to a casting ring to define a receptacle for receiving investment material, and a sprue holding member connecting to the base unit within said receptacle and supporting thereon one or more sprues for holding a wax structure formed in a pattern to be cast. The sprue having a first end connecting to the wax structure and a curved adapter disposed at the second end for quick locking onto the sprue holding member.

20090266269, Oct 29, 2009

Apr 23, 2008

12/150036

Kwang Kook Lee - Los Angeles CA, US
Shin Jong Chang - Los Angeles CA, US

C09C 1/36

106439

A household wall non-toxic paint additive comprised of mixture of solvent-soluble compounds, which fine granulated from available mineral composition, with dipole properties, in which aromatic oils can be added to the paint additive is enclosed in this current application. This nontoxic paint additive makes for a type of special painting material, in the current application, is non-harmful for man.

20100199420, Aug 12, 2010

Feb 12, 2010

12/705269

KWANG H. LEE - Burbank CA, US

A47K 3/28

4601

This invention relates to a therapeutic shower device, having hand-held means for convenient control of water temperature, for an acupunctural water treatment by delivering sharp pointy jet water streams on a person's acupuncture points and repeatedly alternating hot and cold water of pre-set temperatures. The therapeutic shower device comprises a main flow line connected to water systems; an adjustable water dispenser comprising a distribution line, a plurality of self-supporting hoses, and nozzle assemblies; a diverter valve; and a supporter to support and fix the distribution line. The advantages of the present invention are: (1) the therapeutic shower device provides an acupunctural treatment; (2) the therapeutic shower device can be conveniently installed to an existing water system; and (3) water temperature can be repeatedly altered between hot and cold at pre-set temperatures every ten to thirty seconds while using the therapeutic shower device by manipulating a hand switch.

20150196165, Jul 16, 2015

Jan 11, 2014

14/153018

Kwang ho lee - Diamond bar CA, US
Don Je Lee - Diamond Bar CA, US

A47J 47/00
B26B 29/06

A knife guided cutting board comprised of a base of a cutting board and a knife guiding device. The half round shape of the knife guide device is the place where the end of the knife will be inserted, so the front side of the knife is firmly stationed when the cutting action is engaged. A knife guided cutting board can cut and slice thick and solid food such as fish, meat, and hard vegetables. The apparatus can work with any conventional knife. The knife guide device will guide the motion of the cutting in a confined downward arc movement due to the fact that the end of the knife is resided in the knife guide device, this ensures consistent and safe cutting is achieved because the force applied by the user is evenly distributed in a upward and downward motion guided by this invention.