Kwang S.
Kwang S. Kim, Jeekogdong KR
Patent application number | Description | Published |
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20090297847 | GROWTH AND APPLICATIONS OF ULTRALONG CARBON NANOTUBES - Ultralong carbon nanotubes can be formed by placing a secondary chamber within a reactor chamber to restrict a flow to provide a laminar flow. Inner shells can be successively extracted from multi-walled carbon nanotubes (MWNTs) such as by applying a lateral force to an elongated tubular sidewall at a location between its two ends. The extracted shells can have varying electrical and mechanical properties that can be used to create useful materials, electrical devices, and mechanical devices. | 12-03-2009 |
Kwang S. Kim, Red Bank, NJ US
Patent application number | Description | Published |
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20140063594 | Optical Fiber Amplifier Including Rare-Earth-Doped Cladding Region - A rare earth doped optical fiber amplifier is configured to have an enlarged core region and a trench formed adjacent to the core, where at least an inner portion of the trench is also formed to include a rare earth dopant. The presence of the rare earth dopant in the inner region of the cladding minimizes transient power fluctuations within the amplifier as the number of optical signals being amplified changes. The addition of rare earth dopant to the cladding increases the overlap between the pump, signal and the rare earth ions and thus improves the gain efficiency for the optical signal. The relatively large core diameter increases the saturation power level of the rare earth dopant and decreases the transients present in the gain as the input signal power fluctuates. | 03-06-2014 |
Kwang S. Lee, Loma Linda, CA US
Patent application number | Description | Published |
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20100159416 | DISPOSABLE DENTAL PROPHYLAXIS INSTRUMENT CAPABLE OF DISCHARGING DENTIFRICE MATERIAL - The present invention relates to a disposable dental instrument used by dental professionals to polish a patient's teeth. The dental instrument can be connected to a hand motor used to rotate a prophy cup with a plurality of grinding wings that rub against the patient's teeth as a predetermined amount of tooth cleaning fluid is discharged directly on the patient's teeth through a drain hole within the prophy cup. The tooth cleaning fluid is discharged from a tube that is assembled in a tube room of the dental instrument. The tube is a flexible bladder similar in function and form to a tube of toothpaste. The tube is made of a flexible polymer material that allows it to be squeezed when pressure is applied to it. A roller is assembled within the tube room and on top of the tube. As the roller is pushed forward with a finger, the tube is squeezed to discharge the tooth cleaning fluid directly on the patient's teeth. | 06-24-2010 |