国家/地区 中国（46） 世界知识产权组织（6） 欧洲专利局（EPO）（5） 美国（5） 加拿大（3） 印度（2） 日本（2） 韩国（2）
IPC部 C（52）
IPC大类 C08（52）
IPC小类 C08K（52）
IPC C08K003/04（52）
发明人 LIU J（7） TIAN X（4） ZHOU W（4）
FU Y（3） WAN G（3） WANG J（3）
ZHANG Y（3） JIANG J（2） JIN R（2）
LI H（2） LIANG Y（2） LIN Y（2）
LIU G（2） LIU P（2） LIU W（2）
公开年 2021（20） 2022（11） 2018（5） 2016（4） 2015（3） 2017（3） 2023（3）
申请年 2020（16）  2021（9）  2022（9）  2017（8）  2016（4）  2014（2） 
专利权人 ANHUI GLANT .（7） ANHUI CHAOXI.（2） GUIZHOU LIZH.（2） RIFENG ENTER.（2）
RIFENG TECHN.（2）

Double-wall corrugated pipe material outer wall and inner wall, where outer wall comprises e.g. chlorinated polyvinyl chloride resin, grafted polyethylene solubilizer, light shielding agent, ultraviolet light absorber, strengthening agent graphene, lubricant, and nano calcium carbonate.

LUO Q, YE C, ZHENG S, CHEN G, ZHANG S

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

High density polyethylene corrugated pipe useful in the field of transportation and construction, comprises inner wall and outer wall, where the inner wall includes enhanced HDPE master batch, magnesium carbonate, zinc sulfide, pentaerythritol ester and polyethylene wax.

LI W, JIANG J, ZHANG Y

Double insulation type self-limiting temperature heating cable used in electric heating element, comprises two parallel metal wire cores whose outside is covered with PTC material layer, where PTC material layer is covered with inner insulating layer and flame-retardant outer insulating layer.

JI C

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

Modified polyethylene wearable composite pipe for water supply and drainage of municipal and building, has glass fiber line that is provided with multiple layers on outer layer pipe structure, inner tube body and outer layer pipe body fixedly connected with the inner layer pipe body.

LIN J

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

Diffuser mechanism of non-welding structure useful in seawater discharge channel comprises pipe component closely supports sleeve on spool of hull, and diffusion component supporting wing pieces inside sleeve.

SEOK N

Fluid transport tube for transporting different grades of fuel and their vapor such as brake fluids, transmission oil and coolants during vehicle operation, ha layer having polymer or copolymer which is formed into circular cross-sectional profile, and graphene material in layer.

DOBLE C, HAHN R, BANERJI A