Patents by Inventor Kun Hong Lee

Kun Hong Lee 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: 20100028615
    Abstract: A method of processing a superhydrophobic surface and a solid body having the superhydrophobic surface processed by the method are provided. The method includes orienting a spray nozzle of a particle sprayer toward a surface of a metal body, operating the particle sprayer to forming micro-scale protrusions and depressions on the surface of the metal body by spraying particles to the surface of the metal body, forming a plurality of nano-scale holes on the surface of the metal body by treating the metal body through an anodic oxidation process, forming a replica by immersing the metal body in a non-wetting polymer material and solidifying the non-wetting polymer material, and forming a superhydrophobic dual-scaled surface structure having nano-scale pillars formed on micro-scale protrusions and depressions by removing the metal body and an anodic oxide from the replica.
    Type: Application
    Filed: July 5, 2007
    Publication date: February 4, 2010
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Woon-Bong Hwang, Kun-Hong Lee, Joon-Won Kim, Hyun-Chul Park, Dong-Hyun Kim
  • Publication number: 20100012477
    Abstract: The present invention relates to a surface modification of carbon fibers, and more particularly to, such a method of modifying the surface of carbon fibers by irradiating an electromagnetic wave to the carbon fibers. When an electromagnetic wave of a high frequency is irradiated to the carbon fibers, the carbon fibers are modified. The modified carbon fibers have an increased surface roughness. In case of manufacturing a composite material by mixing the carbon fibers with a matrix, the modified carbon fibers are relatively greatly improved in physical property as compared to the original carbon fibers prior to the modification.
    Type: Application
    Filed: December 4, 2006
    Publication date: January 21, 2010
    Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSTECH FOUNDATION
    Inventors: Yoo Jin Lee, Kun Hong Lee
  • Publication number: 20090317590
    Abstract: A method of processing a superhydrophobic surface and a solid body having the superhydrophobic surface processed by the method are provided. The method forming a plurality of nano-scale holes having nano-scale diameter on a surface of a metal body through an anode oxidation process, forming a replica by immersing the metal body provided with the nano-scale holes in a hydrophobic polymer material and solidifying the hydrophobic polymer material, and forming the superhydrophobic surface by removing the metal body with an anode oxide. The solid body includes a base, and a surface structure having micro-scale unevenness formed by a plurality of bunches formed by a plurality of adjacent pillars that are formed on the base and have a nano-scale diameter.
    Type: Application
    Filed: July 5, 2007
    Publication date: December 24, 2009
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Woon-Bong Hwang, Kun-Hong Lee, Dong-Hyun Kim, Hyun-Chul Park
  • Publication number: 20090260702
    Abstract: The present invention relates to a method for manufacturing a solid body having a superhydrophobic surface structure formed by using a surface treatment of a metal body, a replication process, and a polymer sticking phenomenon to increase efficiency of fluid transfer and prevent foreign materials from being accumulated in the tube, and a superhydrophobic fluid transfer tube using the method. The superhydrophobic fluid transfer tube includes a fluid guider and a solid body provided on a fluid contact surface of the fluid guider and has micrometer-scaled unevenness and nanometer-scaled protrusions.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 22, 2009
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Dong-Hyun Kim, Sang-Min Lee, Il-Sin Bae, Dong-Seob Kim, Duk-Hyun Choi, Chang-Woo Lee, Ji-Hoon Jeon, Seong-Ho Son, Tae-Chul Moon, Woon-Bong Hwang, Joon-Won Kim, Hyun-Chul Park, Kun-Hong Lee
  • Patent number: 7601043
    Abstract: A field emission display (FED) with an integrated triode structure is provided. The FED can be manufactured without using a complex packaging process and have a significantly reduced well diameter and a significantly reduced cathode-to-anode distance. In the FED, front and rear panels form a single body using an anode insulating layer as an intermediate. A method for manufacturing the FED using anodic oxidation is also provided.
    Type: Grant
    Filed: December 26, 2003
    Date of Patent: October 13, 2009
    Assignee: Postech Foundation
    Inventors: Kun Hong Lee, Sun Kyu Hwang, Ok Joo Lee
  • Patent number: 7554255
    Abstract: An electric field emission device having a triode structure is fabricated by using an anodic oxidation process. The device includes a supporting substrate, a bottom electrode layer to be used as an cathode electrode of the device, a gate insulating layer having a plurality of first sub-micro holes, a gate electrode layer having a plurality of second sub-micro holes connecting to the first sub-micro holes, an anode insulating layer having a plurality of third sub-micro holes connecting to the second sub-micro holes, a top electrode layer for hermetically sealing the device, the top electrode layer being used as an anode of the device and a plurality of emitters formed in the first sub-micro holes. The emitters are formed so as to come into as close contact as possible to the electrodes of the device, which results in decreasing a driving voltage.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 30, 2009
    Assignee: Postech Foundation
    Inventors: Kun-Hong Lee, Sun-Kyu Hwang, Soo-Hwan Jeong
  • Patent number: 7432571
    Abstract: Provided are a multi-scale cantilever structure having nano-sized holes prepared by anodic oxidation and a method of preparing the same. The multi-scale cantilever structure is prepared using anodic oxidation and electro-polishing so that a manufacturing process is simple and a manufacturing cost is inexpensive. In addition, the multi-scale cantilever structure has a porous structure having a plurality of nano-sized holes inside thereof, and thus a surface area of the cantilever structure can be maximized. Therefore, when the cantilever structure is used in a sensor, the sensor can have improved sensitivity and selectivity.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: October 7, 2008
    Assignees: Postech Foundation, Postech Academy-Industry Foundation
    Inventors: Jung Hyun Lee, Pyung Soo Lee, Kun Hong Lee, Nayoung Shin
  • Publication number: 20070216531
    Abstract: The present invention relates to a Radio Frequency Identification (RFID) sensor using an RFID tag and a ubiquitous sensor network system using the RFID sensor. The RFID sensor extracts a unique number of at least one RFID chip chosen according to a used state of a monitored object among at least one chip set up on a monitored object according to the number of usable states of the monitored object. A controlling unit receives the unique number from the RFID sensor and recognizes the used state of the monitored object on the basis of meaning information of the unique number. The present invention provides an effect to embody a sensor that can be set up easily by using an RFID tag in a low price. Also, the present invention provides another effect that all kinds of objects can be monitored easily in a low price by using an RFID tag without a wire and a power supply.
    Type: Application
    Filed: April 7, 2005
    Publication date: September 20, 2007
    Inventor: Kun-Hong Lee
  • Publication number: 20050285502
    Abstract: An electric field emission device having a triode structure is fabricated by using an anodic oxidation process. The device includes a supporting substrate, a bottom electrode layer to be used as an cathode electrode of the device, a gate insulating layer having a plurality of first sub-micro holes, a gate electrode layer having a plurality of second sub-micro holes connecting to the first sub-micro holes, an anode insulating layer having a plurality of third sub-micro holes connecting to the second sub-micro holes, a top electrode layer for hermetically sealing the device, the top electrode layer being used as an anode of the device and a plurality of emitters formed in the first sub-micro holes. The emitters are formed so as to come into as close contact as possible to the electrodes of the device, which results in decreasing a driving voltage.
    Type: Application
    Filed: July 30, 2003
    Publication date: December 29, 2005
    Applicant: POSTECH FOUNDATION
    Inventors: Kun-Hong Lee, Sun-Kyu Hwang, Soo-Hwan Jeong
  • Patent number: 6759025
    Abstract: A method of synthesizing carbon nanotubes and a carbon nanotube synthesizing apparatus used for the same are provided. A catalyst is introduced into the reactor, and the catalyst in the reactor is selectively and locally heated by a heating method such as microwave irradiation, electromagnetic inductive heating, radio frequency heating or laser heating. Here, carbon source gas, carbon source gas and hydrogen sulfide gas, or carbon source gas and hydrogen gas or inert gas is supplied into the reactor, thereby growing carbon nanotubes from the locally heated catalyst.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: July 6, 2004
    Assignees: Iljin Nanotech Co., Ltd., Pohang University of Science and Technology Foundation
    Inventors: Eun-Hwa Hong, Kun-Hong Lee, Chang-Mo Ryu, Jong-Hoon Han, Jae-Eun Yoo
  • Publication number: 20020127170
    Abstract: A method of synthesizing carbon nanotubes and a carbon nanotube synthesizing apparatus used for the same are provided. A catalyst is introduced into the reactor, and the catalyst in the reactor is selectively and locally heated by a heating method such as microwave irradiation, electromagnetic inductive heating, radio frequency heating or laser heating. Here, carbon source gas, carbon source gas and hydrogen sulfide gas, or carbon source gas and hydrogen gas or inert gas is supplied into the reactor, thereby growing carbon nanotubes from the locally heated catalyst.
    Type: Application
    Filed: April 27, 2001
    Publication date: September 12, 2002
    Inventors: Eun-Hwa Hong, Kun-Hong Lee, Chang-Mo Ryu, Jong-Hoon Han, Jae-Eun Yoo