国家/地区 中国（4）
IPC部 F（4）
IPC大类 F26（4）
IPC小类 F26B（4）
IPC F26B005/06（4）
发明人
公开年 2020（4）
申请年 2019（3） 
专利权人

Freeze dryer for preparing graphene oxide powder, has annular block whose one side is provided with bolt whose outer side wall and inner side wall of annular block are detachably connected by screw thread.

XU Y, JIANG Y, SUN J

Device for preparing graphene oxide powder, comprises drier box body, drying chamber, collecting groove and packing auger, where drying chamber is orderly provided with multiple trays from top to bottom, collecting groove is set at right lower end of drying chamber.

WANG X

Freeze drying nano recovery machine for graphene comprises recycling box body, feeding pipe and closing plate, where one side of recycling box body is connected with feeding pipe and closing plate is slidingly connected with recycling box body.

CHEN J

Freeze dryer for preparing graphene oxide powder, comprises quick-freezing chamber and drying chamber, where quick-freezing chamber comprises compressor, condensing chamber, radiator and fan, where condensing chamber is set at one side of quick-freezing chamber.

WANG Q, WANG P, WANG J, ZHANG W, YU Z, WANG H