国家/地区 中国（4）
IPC部 B（5） H（2）
IPC大类 B29（5） B32（3） H05（2）
IPC小类 B29B（5）
IPC B29C048/00（5）
发明人
公开年 2022（5）
申请年 2021（5）
专利权人

Plastic case with electromagnetic shielding and antibacterial functions useful in mobile electronic device, comprises second layer overlaid on upper surface of first layer, and third layer overlaid on top surface of second layer.

CHEONJISEUNG, HYEON J D

Polybutylene composite pipe used in hot spring transportation, comprises anti-corrosion outer layer, thermal insulation layer and working inner layer from outside to inside, where working inner layer is made of polybutene material and insulation layer is made of polyethylene foamed plastic.

QIN X, YI Z, WANG L, JIN J, LIANG Y

Multi-layer printed circuit board plate production process inner and outer layer spiral extrusion line plate forming method, involves utilizing cooling structure to cool and dry printed circuit board plate material, and promoting plate material solidifying and forming processes.

LAI J, CHEN X, SU H, ZHANG H, YE H

Bending-resistant, impact-resistant steel aqueous decorative film comprises decorative layer, polyvinyl chloride substrate and modified resin layer.

ZHANG Y

Multilayer coextrusion electromagnetic shielding fluoroplastic electric insulating corrugated pipe comprises electromagnetic shielding layer and insulating layer.

JIA X, LIU J