国家/地区 中国（3）
IPC部 B（3）
IPC大类 B29（3） C08（2） E04（2）
IPC小类 B29D（3）
IPC B29D007/01（2） E04F015/02（2） E04F015/18（2）
发明人 WANG Y（2）
公开年 2022（2）
申请年 2021（3）
专利权人

Pod-type degradable temporary plugging ball useful in temporary plugging treatment of oil and gas wells in fracturing system, comprises degradable outer shell (comprising e.g. polymerized product of glycolide, lactide, polybutylene succinate prepolymer) and inner core.

LI H, ZHANG Y, SHANG L, HUANG B, LIU J, WANG Y, YANG X, JIANG Q

Heating ceramic tile, has adhesive layer arranged on heating module, ceramic tile main body formed on adhesive layer and bonded to heating module through adhesive layer, and exhaust channel reserved between ceramic tile body and heating module.

SHI J, LIU C, WANG Y, LIN C, LONG Y, LIN K, YU H

Graphene far-infrared floor heating floor comprises wear-resistant paper layer, wood grain paper layer and functional substrate layer, wear-resistant paper layer is complex of high-temperature heat transmitted through functional substrate.

JIN Y, JIN J