国家/地区 韩国（3）
IPC部 C（3）
IPC大类 C04（3）
IPC小类 C04B（3）
IPC C04B014/02（3）
发明人 HO M J（2） SEUNGGYEONG Y（2）
公开年 2022（2）
申请年 2021（2） 
专利权人 SBB CO LTD（2）

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

Water-permeable block comprises e.g. porous structure having honeycomb structure and filler to be filled in empty space of porous structure, includes gravel and bio-urethane-based adhesive containing polymeric methylenediphenyl diisocyanate.

HO M J, SEUNGGYEONG Y

Water-permeable block comprises e.g. gravel and bio-urethane-based adhesive containing first agent comprising polymeric methylenediphenyl diisocyanate and isocyanate monomer and second agent comprising petroleum polyether polyol.

HO M J, SEUNGGYEONG Y