목록 게시판 리스트 옵션 검색 Graphene electronic devices having multi-layered gate insulating layer Inventor H. J. Song, B. J. Cho, S. A. Seo, W. C. Shin No. US 20120313079 A1 출원국가 국외 Date 2012 Date 2012 Graphene electronic devices having multi-layered gate insulating layer