国家/地区 中国（6） 美国（2） 世界知识产权组织（2）
IPC部 F（7） B（4） C（4）
IPC大类 F16（7） C09（4） B32（3）
C08（3）
IPC小类 F16L（7） B32B（3） C08K（3）
C09D（3） C08L（2）
IPC F16L058/10（7）
发明人
公开年 2022（7）
申请年 2021（4）  2022（2） 
专利权人

Pipeline conversion joint with long service life and corrosion resistance for conveying gas, has joint main portion whose surface is fixedly connected with outer anti-corrosion layer and whose inner wall is connected with inner layer.

LI J

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

Preparing graphene oxide-epoxy ceramic composite material that is used for preventing corrosion of inner wall of pipeline, involves modifying graphene oxide by nano-zinc oxide, so that carboxyl group on surface of graphene oxide is bonded to hydroxyl group.

SUN T, YAN W, YAN Y

Multifunctional oxygen barrier pipe useful in cold water and/or hot water conveying and preparing floor heating pipe material, comprises first PB layer, outer hot melt adhesive layer, aluminium layer, inner hot melt adhesive layer and second PB layers from outside to inside in turn.

JIN J, WANG L, LIANG Y

Automotive fluid transport tube for carrying e.g. fuel, has corrosion inhibiting intermediate layer, and outermost coating of material incorporating graphene powder.

BANERJI A, DOBLE C, IYER G, INDIA B, CORY D, AIRGANESH

Composite aluminum pipe with G-shaped pipe comprises a steel pipe and an aluminum pipe combined by cold drawing, and a fin connected with aluminum pipe by a groove outside aluminum pipe and a coating layer provided at outer part of G-shaped pipe.

LU Y

Apparatus for improving flow in pipelines, has air gap that provides upward movement of polyethylene terephthalate (PET) layer using opposite forces of alternate sides of PET layer, and configuring graphene layer to surround shell.

RAYNEL G R J, VILLETTE T T