Lg Innotek Co., Ltd.

Penta Security Systems Inc.

Autocrypt Co., Ltd.

Ss Clinic Corp.

Hyun Min Choi

Sun Kyung Kim

Woon Kyung Choi

Seok Lee

Duk Soo Kim

Sang Gyoo Sim

Eui Seok Kim

Myung Woo Chung

Hyung Ki Choi

Sung Ha Kim

A pseudonym certificate management method, performed by a pseudonym certificate management apparatus interworking with an external server, may comprise: receiving, from the external server, a pseudonym certificate in a state locked based on a root value identifiable only by the external server; periodically receiving an unlocking key for the pseudonym certificate from the external server; activating the pseudonym certificate with the unlocking key; and when the activated pseudonym certificate is abnormal, deactivating the pseudonym certificate.

Apparatus and method for managing pseudonym certificates and preventing tracking thereof

Provided are a light emitting device and a light emitting device package. The light emitting device includes a transparent substrate, a light emitting structure, and a first reflection layer. The light emitting structure includes a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer that are disposed on a top surface of the substrate. The first reflection layer is disposed on a bottom surface of the substrate. The bottom surface of the substrate has a surface roughness of about 1 nm to about 15 nm in root mean square (RMS) value.

Light emitting device and light emitting device package

Disclosed are a light emitting device, a light emitting device package, and a lighting system. The light emitting device includes a light emitting structure including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer on, a light transmissive substrate having a refractive index lower than a refractive index of a compound semiconductor layer, and a mirror structure layer having a structure in which a first mirror layer having a first refractive index and a second mirror layer having a second refractive index different from the first refractive index are alternately stacked on each other. The first mirror layer has a thickness of W&#xb7;&#x3bb;/(4&#xb7;n&#xb7;m), and the second mirror layer has a thickness of W&#xb7;&#x3bb;/(4&#xb7;n&#xb7;m) in which the W represents a weight constant in a range of about 1.05 to about 1.25.

Light emitting device, light emitting device package, and lighting system

Provided is an inflatable prosthesis for aiding penile erection and augmentation for being disposed between the outer skin and the pair of corpus cavernosa of a patient's penis. The inflatable prosthesis comprises a contractible cylinder body () provided with a cavity () therein and a liquid passage () at the rear portion thereof; a preferably elastic or flexible head ring () with an annular body; a means for coupling the head ring with the front portion of the cylinder body (); and a liquid pump () coupled with the liquid passage () of the cylinder body (). According to the present invention, the possibility of causing damage to the penis, particularly the corpus cavernosum, may be reduced.

Inflatable prosthesis for aiding penile erection and augmentation

Growing community of inventors

Seoul, South Korea

Hyun Min Choi