国家/地区 世界知识产权组织（2）
IPC部
IPC大类
IPC小类
IPC
发明人
公开年
申请年 2021（2）
专利权人 LG ELECTRONICS INC（2）

Diaphragm of sound generating device, has matrix structure that is provided with material and comprises through holes or non-through holes, and graphene layer that is positioned in portion of through holes/non-through holes.

LEE S, LEE K, LEE D

Material used for sensor for sensing gas including toxic gas and volatile organic compound, e.g. nitrogen-based compound, alcohol, ketone, aldehyde or thiol compound, preferably acetone, ammonia, formaldehyde or methyl mercaptan, comprises polypyrrole derivative and carbon material.

KANG S, TAKADA M, KIM J, HWANG B, HWANG P Y, KIM J Y, KANG S M