国家/地区 中国（3）
IPC部 C（3）
IPC大类 C25（3）
IPC小类 C25D（3）
IPC C25D003/46（3）
发明人
公开年 2021（3）
申请年 2020（3）
专利权人

Preparing antibacterial and corrosion resistant metal orthodontic appliance, involves polishing metal appliance, mixing graphene oxide and nano-silver particles, and adding pretreated metal appliance into electrodeposition solution.

ZHANG C, HE L, DAI D, CHEN Y, WANG J

Preparation of transition metal nano-catalyst used in e.g. reduction of carbon dioxide, involves immersing carrier in solution prepared using potassium sulfate or bicarbonate, polyvinylpyrrolidone, and transition metal precursor.

SHI W, HU B

Repairing contact surface of electric device joint comprises e.g. polishing and flattening the two contact surfaces of device joint, alkali degreasing and performing electric cleaning treatment, activation treatment and brush plating.

LV W, LI Q, DONG C, ZHAO Y