Heon Jin
Heon Jin Choi, Seoul KR
Patent application number | Description | Published |
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20080245961 | Nanowire Assisted Laser Desorption/Ionization Mass Spectrometric Analysis - This invention relates to a nanowire-assisted method for mass spectrometric analysis of a specimen. More specifically, by using nanowire which can fix a specimen and perform desorption/ionization of the specimen while effectively transferring laser energy to the specimen to be irradiated, thereby enabling to perform mass spectrometric analysis without using a matrix solution. This invention, by effectively performing desorption/ionization of a specimen using the above-mentioned nanowire, enables to effectively perform qualitative-, quantitative-, and micro-analyses of specimens as well as low molecular weighted specimens. Further, this invention enables to the typical device of mass spectrometric analysis used in MALDI-T of MS. In particular, this invention can perform mass spectrometric analysis of a specimen with molecular weight of less than 1,000 Da and perform quantitative analysis by fixing a specimen with a predetermined area. | 10-09-2008 |
Heon Jin Park, Suwon-Si KR
Patent application number | Description | Published |
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20110240912 | TITANIUM ETCHANT COMPOSITION AND METHOD OF FORMING A SEMICONDUCTOR DEVICE USING THE SAME - A titanium etchant composition and a method of forming a semiconductor device using the same, the titanium etchant composition including a titanium remover; a corrosion inhibitor; and a deionized water; wherein the corrosion inhibitor includes 5-aminotetrazole. | 10-06-2011 |
Heon Jin Seo, Seoul KR
Patent application number | Description | Published |
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20130328056 | LIGHT EMITTING DEVICE AND LIGHT EMITTING DEVICE PACKAGE - Disclosed is a light emitting device including a substrate, a buffer layer on the substrate, and a light-emitting structure on the buffer layer. The buffer layer has a refractive index decreased toward the substrate from the light-emitting structure. | 12-12-2013 |
20140034903 | LIGHT EMITTING DEVICE AND LIGHT EMITTING DEVICE PACKAGE - Disclosed is a light emitting device and a light emitting device package. The light emitting device includes a substrate; a first conductive semiconductor layer on the substrate; an active layer on the first conductive semiconductor layer; and a second conductive semiconductor layer on the active layer, wherein the active layer includes: a plurality of barrier layers; and a plurality of well layers between the barrier layers, and wherein at least two of the barrier layers have different energy bandpgaps and have different thicknesses. | 02-06-2014 |
20140054544 | LIGHT EMITTING DEVICE - Disclosed is a light emitting device including a light emitting structure including at least a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer, an electrode layer on the light emitting structure, and a contact layer between the light emitting structure and the electrode layer and including a nitride semiconductor layer. | 02-27-2014 |