国家/地区 中国（4）
IPC部 F（4）
IPC大类 F16（4）
IPC小类 F16L（4）
IPC F16L021/08（4）
发明人
公开年 2023（2）
申请年 2021（2）  2022（2） 
专利权人

Stainless steel clamp check valve e.g. reflux valve, has sleeve rod whose end passes through inner part of mounting pipe and is connected with graphene block, where inside of graphene block is embedded with electric heating block.

ZHANG D, LIN S, ZHANG B

Connecting device embedded with graphene gasket comprises clamp and two cylinders, where hoop comprises hoop belt, hoop belt is bent into O shape, and one end of hoop belt inserted into lower part of other end.

HU Y

Centrifugal air compressor sealing structure, has limiting plate provided with vent hole, where limiting plate is fixedly installed with strong magnet, and strong magnet is movably installed with air filter plate.

UNANNOUNCED I

Graphene lubricating wearable anti-corrosion pipe hoop, has guide head at opposite end of clamping pipe is glidingly inserted in inner part of guide hole set in abutting end of connecting pipe.

SHENG C