国家/地区 世界知识产权组织（2）
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2）
IPC
发明人
公开年 2021（2）
申请年 2021（2） 
专利权人

Repairing a pothole in roadway by forming undercut cavities in the pothole wall, below a surrounding road surface, clearing debris and removing loose asphalt pieces from pothole, filling, and applying expanding polymer base binder.

YOGEV R, KENIG S

Multi-stage foam sound absorbing black material comprises polymer foam framework and continuous graphene resonant cavity attached on framework.

XU Z, LIU X, GAO C, PANG K