Gil-Ho
Gil Ho Kang, Gunpo-Si, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20150315781 | SOUND ABSORBING SHEET HAVING MICRO RESONANT STRUCTURE, METHOD FOR MANUFACTURING SAME, AND SOUND ABSORPTION TYPE SOUNDPROOF PANEL USING SAME - Disclosed are a sound absorbing sheet having a micro resonant structure and capable of improving sound absorption performance up to the low frequency band by means of the micro resonance principle, a method for manufacturing same, and a sound absorption type soundproof panel using same. The sound absorbing sheet according to the present invention has multiple uneven patterns configured to have convex parts and concave parts on one surface of a porous base material, and the area ratio of the concave part determined by the following formula 1 is 40 to 99%. The area corresponding to the concave part has a lower air permeability than the area corresponding to the convex part. [Formula 1] Area ratio of concave portion=[area portion of concave portion]/[area portion of porous base material]. | 11-05-2015 |
Gil Ho Kim, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20150329367 | METHOD FOR PREPARING TRICHLOROSILANE - The present invention relates to a method for preparing trichlorosilane. According to the method for preparing trichlorosilane of the present invention, trichlorosilane may be obtained with improved yield using silicon where copper silicide is formed. | 11-19-2015 |
Gil Ho Lee, Cheongju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20140291767 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - A semiconductor device and a manufacturing method thereof are provided. The semiconductor device includes: a deep trench in a substrate; a sidewall insulating film on a side surface of the deep trench; an interlayer insulating film on the sidewall insulating film; and an air gap in the interlayer insulating film. | 10-02-2014 |
Gil-Ho Kang, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20130199872 | GYPSUM PANEL HAVING OUTSTANDING SOUND-ABSORBING PROPERTIES AND A PRODUCTION METHOD THEREFOR - Disclosed is a gypsum panel having outstanding sound-absorbing properties whereby it is possible to impart various aesthetic effects while also having outstanding sound-absorbing effects. The gypsum panel having outstanding sound-absorbing properties according to the present invention comprises: a perforated gypsum body having a plurality of holes, and a sound-absorbing cover layer which is attached to one side of the gypsum body and which has through-holes of a smaller size than the holes, wherein the mean diameter of the through-holes is between 10 and 40 μm. | 08-08-2013 |
Gil-Ho Lee, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090206908 | Radio Frequency Switch - An RF switch includes first, second and third transmission lines for forming ports, respectively, and first, second and third slot line pattern portions connected to one another, for transferring signals to the first, second and third transmission lines, respectively. The first slot line pattern portion has a slot line pattern for transferring a signal received from the first transmission line to a connection point with the other slot line pattern portions, and a switching circuit for shorting the gap of a corresponding slot line and thus blocking the signal transfer. The second slot line pattern portion includes a loop slot line formed by a first and a second half loop slot line, a second sub-slot line for transferring a signal received from the connection point to the second transmission line through the loop slot line, and a switching circuit for shorting the gap of a corresponding slot line. | 08-20-2009 |
| 20090315639 | DPDT RF Switch and TMA Using the Same - Disclosed is a DPDT RF switch. The DPDT RF switch includes: first to fourth transmission lines for forming first to fourth ports, respectively; and first to fourth slot line pattern sections. The first slot line pattern section includes: a first slot line; and a first switching device for blocking signal transfer by short-circuiting a gap of a slot line. The third slot line pattern section includes: a third slot line; and a third switching device for blocking signal transfer by short-circuiting a gap of a slot line. The second slot line pattern section includes: a first loop-shaped slot line; a second slot line; and a second switching device for blocking signal transfer by short-circuiting a gap of a slot line. The fourth slot line pattern section includes: a second loop-shaped slot line; a fourth slot line; and a fourth switching device for blocking signal transfer by short-circuiting a gap of a slot line. | 12-24-2009 |
Gil-Ho Lee, Yongin-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20080290962 | Radio frequency switch - An RF switch is provided. In the RF switch, a T-junction slot line has a horizontal slot line and a vertical slot line. An open-end circuit is provided at each end portion of the horizontal and vertical slot lines. A first transmission line delivers signals from and to one portion of the horizontal slot line, and a second transmission line delivers signals from and to the other portion of the horizontal slot line. A third transmission line delivers signals from and to the vertical slot line. A switching circuit selectively switches the signal path of the one or the other portion of the horizontal slot line to the vertical slot line according to an external switching control signal. | 11-27-2008 |
| 20090153271 | VARIABLE RADIO FREQUENCY BAND FILTER - A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of the housing; at least one tuning rod positioned on top of the resonator rods; a tuning support extending through the respective tuning rods along the longitudinal direction of the housing and adapted to slide on top of the respective resonator rods to vary the position of the tuning rods; and a frequency variation unit positioned on a lateral surface of the housing. The frequency variation unit being coupled to an end of the tuning support and adapted to vary the position of the tuning rods, as the tuning support is slid, according to the frequency band. | 06-18-2009 |
Gil-Ho Song, Gwangyang-Si, Jeollanam-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20150306645 | SHAPE-CORRECTING AND ROLLING METHOD AND SHAPE-CORRECTING DEVICE FOR HIGH-STRENGTH STEEL - There are provided a shape-correcting and rolling method and a shape-correcting device for effectively correcting the shape of high-strength steel. The shape-correcting and rolling method includes: transferring a hot-rolled coil to a pay-off reel after cooling the hot-rolled coil or directly through a hot rolling to skin pass mill direct transfer process; unwinding the coil from the pay-off reel; correcting a shape of a strip unwound from the coil by using a heat pipe roller; and rewinding the strip as a coil. | 10-29-2015 |