国家/地区 中国（4）
IPC部 C（4）
IPC大类 C08（4）
IPC小类 C08K（4）
IPC C08K007/14（4）
发明人
公开年 2022（3）
申请年 2022（4）
专利权人

Liquid ring type vacuum pump comprises e.g. pump body, pump cover fixed at two ends of the pump body respectively, disc fixed between two pump covers and pump body and impeller fixed on rotating shaft between two discs.

ZHAO X, WANG Q, LIU Y, YUE H, YU S

Fiber reinforced plastic electro-fusion pipe with independent control of mechanical performance and electrical performance comprises electric melting pipe main body embedded with resistance wire, and provided with two binding posts respectively connected to two ends of resistance wire.

HU Z, ZHENG J, SHI J, YAO R

Preparing polytetrafluoroethylene composite rotary control head seal comprises molding mixed powder to obtain blank and sintering blank at high temperature to obtain polytetrafluoroethylene composite material, and performing mechanical processing and heat treatment.

LI Z, JIANG L, TANG M, LI S, LIANG Y, JIANG Y, REN W, DENG X, ZUO X, LIU X, YANG B, TANG G

Preparing pipe material comprises cleaning mineral-inorganic composite materials, grinding, melting, casting and forming in combination with pipe mold by means of centrifugal casting, demolding and cooling, heating and densifying, and coating anti-corrosion coating.

WANG P