国家/地区 韩国（2）
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2）
IPC
发明人
公开年
申请年 2022（2）
专利权人

Inter-floor noise prevention system of house useful for preventing noise generated in upper floor from being transmitted to the lower floor, comprises sound absorbing plate installed on concrete slab, and sound wave vibration blocking plate.

HO S J

Methyl methacrylate resin-based fast-diameter sealing material composition used for repairing cracks in concrete structure, contains cellulose nanofibers, butyl acrylate, pentenoic acid, sulfide-based silane coupling agent, furocoumarin compound, benzoyl peroxide curing agent, and inorganic filler.

KWON I G