国家/地区 中国（26） 美国（4） 欧洲专利局（EPO）（3） 世界知识产权组织（3） 巴西（2） 加拿大（2） 韩国（2）
IPC部 F（32）
IPC大类 F16（32） C08（24） B29（11）
B32（8） C09（3） F28（3）
B05（2）
IPC小类 F16L（32） C08L（23） C08K（21）
B29D（8） B32B（8） C08J（5）
B29C（4） C09D（3） F28F（3）
B05D（2） B29B（2）
IPC F16L009/12（32）
发明人 LIU J（6） WANG J（5） FU Y（3）
HUO F（3） LI H（3） TIAN X（3）
WAN G（3） WANG L（3） CHEN H（2）
LIANG Y（2） LIU W（2） LIU Z（2）
MEI L（2） SONG Q（2） TENG X（2）
公开年 2021（12） 2022（10） 2016（3） 2020（2） 2023（2）
申请年 2020（10）  2022（8）  2021（6）  2016（3）  2019（3） 
专利权人 ANHUI GLANT .（6） LINHAI WEIXI.（3） RIFENG ENTER.（2） RIFENG ENTER.（2）
RIFENG TECHN.（2） ZHEJIANG WEI.（2）

Synthetic resin pipe reinforced with improved outer peel layer comprises e.g. main layer comprising main body, inner peel layer formed as thin film on inner circumferential surface of main layer made up of vinyl chloride, and polyethylene.

HWAN K J

High-strength polyethylene pipe fittings comprises e.g. polyethylen outer layer, middle layer and inner layer, where outer layer is embedded at outer side of middle layer, and middle layer is provided with reinforcing layer and reinforcing layer is net-shaped structure or planar structure.

CHEN J, CHEN Z, PAN X

Rubber tube useful for underground hydraulic transmission, comprises e.g. inner rubber layer set inside composite layer and outer rubber layer set outside composite layer, where metal weaving layer is compounded on middle rubber layer, and outer rubber layer is compounded on metal weaving layer.

WANG Y, HU X, HAN W, JIA X, LIU G, LI X

Modified core-shell masterbatch toughened polypropylene random copolymer (PPR) pipe comprises tube body comprising outer layer, middle layer and inner layer, where outer layer comprises PPR resin, modified nano-calcium carbonate and dispersant.

MO Y, LU Z, LI Y, LI H, SHI K, LIANG Y, LAN J

Deep geothermal thermal insulation composite pipeline comprises four-layer composite structure, and from inside to outside are inner layer base pipe, plane high thermal conductivity layer, polyethylene foam layer and outer layer pipe, and inner layer base pipe is extruded polyethylene or PERT.

HUO F, WANG D, ZHANG Y, WANG J

High-strength temperature medium conveying pipeline comprises e.g. rigid reinforcing layer, polyethylene of raised temperature resistance modified foam layer, anisotropic plane high thermal conductivity graphene layer and inner core pipe in turn from outside to inside.

WANG J, SONG Q, HUO F, CHU Z

High thermal conductivity radiation cross-linked polyethylene material useful in preparing pipe, comprises polyethylene, thermally conductive fillers, fluorine-containing organic compounds, impact modifiers, and additives.

WANG L, LIU Z, ZHANG H

Processing cold-resistant water pipe useful in e.g. polyvinyl chloride water supply pipe, comprises e.g. ultrasonically dispersing graphene oxide and deionized water, centrifuging, reacting, stirring polypropylene, ethylene-octene copolymer, high-density polyethylene, and performing melt extrusion.

LU X, GU N

Weather-resistant drainage pipeline with multilayer structure, comprises an inner layer, an intermediate layer and an outer layer, where the intermediate layer pipe comprises PVC resin, calcium carbonate powder, calcium-zinc heat stabilizer, solid plasticizer, processing aid and toughening modifier.

HUO F, CHEN H, SONG Q, FENG J

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