国家/地区 中国（15） 印度（3） 美国（3） 欧洲专利局（EPO）（2）
IPC部 B（22）
IPC大类 B01（22） C02（8） C01（2）
C07（2）
IPC小类 B01D（22）
IPC B01D061/14（22）
发明人 WANG Y（3） CHEN G（2） WANG J（2）
WANG T（2） WANG Z（2）
公开年 2021（10） 2022（8） 2023（4）
申请年 2021（22）
专利权人

Process for 5-hydroxymethyl ether formation involves using ionic liquid catalyst of fructose in corresponding alcohol and adding to N,N-dimethylacetamide methanesulfonate, refluxing reaction mixture, cooling and isolating desired ether product under reduced pressure and reusing recovered alcohol.

DUTTA S

Lead ion selective adsorption polyacrylonitrile ultrafiltration membrane useful in field of lead ion wastewater treatment, comprises support layer and polyacrylonitrile separation layer (including nanoparticles surface-modified by phosphoramidate compound).

YU H, ZHANG Y, PAN G, LIU Y, ZHAO M

Non-powered passive drinking water purifying device supplying safe water to small communities comprises storage tank in which water to be purified is stored, and manual actuator for pumping water contained in storage tank using hand or foot.

KIM E W, KIM M K

Hollow fiber ultrafiltration membrane for removal of heavy metals including arsenic, comprises polyphenylsulfone as base polymer, polyvinylpyrrolidone as pore-forming agent, and polyvinylpyrrolidone as hydrophilic polymer.

TODETI S R, NAYAK C M, KUMAR M, ISLOOR A M

Portable drinking water container with water filtration system comprises screw cap of container at top with removable water filter fitting to as cartridge and squeezable cylindrical water storage unit of suitable material.

MANDAL A, GHOSH S, GUPTA A

Polysulfone high throughput ultrafiltration membrane used for advanced treatment of industrial waste water and process water, comprises poly sulfone-based film layer provided with nano graphene layer and fiber net reinforcing layer.

ZHAO H, WANG Z, ZHAO D, ZHAO S, RONG H, LI N

Treating starting liquid containing pollutants comprises adding graphene oxide to starting liquid so as to adsorb part of pollutants and causing pre-treated liquid to flow through porous membrane comprising hollow fibers.

MELUCCI M, PALERMO V, KOVTUN A, NAVACCHIA M L, BOCCHI L

Mop cleaning bucket for rinsing and de-drying clean water by circulating and filtering sewage, has water column for drawing water from water purification area to clean mop cloth to form sewage that flows to water outlet through inclined surface.

WU C

Hollow nano-silver/graphene/polyethylene ultrafiltration membrane used as water channel, includes preset amount of polyethylene, polypropylene and hollow nano silver/graphene.

ZHOU W, CAI Q, CAI Y, ZHANG K, ZHOU B, WANG Y, FENG Y, ZHAO L, WANG P, TANG R

Graphene microporous filtering film for sample filtering treatment, has operation ring that is provided with two, two operation rings are diagonally distributed on upper end face of fixing ring.

YANG X, LUO G