Dongkook Pharmaceutical Co., Ltd.

Samsung Electronics Co., Ltd.

Hee Man Kim

Hyeung Geun Park

Sang Sup Jew

Jeong Hoon Kim

Hee Doo Kim

Young Hoon Jung

Chi Hyoung Yoo

Doo Yeon Lim

Young Choong Kim

Hee Young Beom

Hong Pyo Kim

Sung Ki Seo

Eung Seok Lee

Mi Kyeong Lee

Tae Gyu Nam

Ducky Han

Pil Jong Shim

Ju Eun Jung

Hee Sung Choi

So Ra Kim

Jae Ho Park

Compositions and methods of treating or preventing hepatotoxicity utilizing asiatic acid derivatives of Formula 1 are disclosed.

Liver protection or treatment agents comprising asiatic acid derivatives as the active component

Disclosed is the use of 2-oxoasiatic acid in the treatment of dementia or cognitive disorders.

Medicines for treating dementia or cognitive disorder, which comprises asiatic acid derivatives

Asiatic acid derivatives having modified A-ring

An apparatus for removing foreign materials from the head of a video cassette recorder or a video camera wherein the foreign materials adhering to the head are repeatedly cleansed away by a head cleaner until the foreign materials are completely removed. A synchronizing signal detecting section 20 detects synchronizing signals from among video signals amplified by a video mechanism 10. The synchronizing signal detecting section 20 then converts the detected signals into a DC voltage. An envelope detecting section 30 detects envelope signals from among the video signals and converts them into a DC voltage. The output of the synchronizing signal detecting section 20 and that of the envelope detection section 30 are compared by a comparing section 40. A microcomputer 60 controls the head cleaner 12 in accordance with the output of the comparing section 40, thereby making it possible to completely clean the head with an apparatus that is convenient and easy to use.

Apparatus for removing foreign materials from the head of a video

Growing community of inventors

Seoul, South Korea

Hee Man Kim