国家/地区 中国（27） 美国（10） 世界知识产权组织（6） 欧洲专利局（EPO）（3） 韩国（3） 日本（2） 台湾（2）
IPC部 B（36）
IPC大类 B01（36） C02（32） C01（6）
C08（6） E21（2）
IPC小类 B01D（36）
IPC B01D069/02（36）
发明人 LI S（3） ZHANG X（3） GRIGGS C S（2）
HUANG Y（2） JAMISON D E（2） LIN C（2）
LIU T（2） LIU X（2） LIU Y（2）
PEARL W C（2） SHUMWAY W W（2） WANG Y（2）
ZHANG J（2）
公开年 2021（19） 2020（15） 2022（2）
申请年 2020（36）
专利权人 HALLIBURTON .（2） US SEC OF AR.（2）

Preparation of nanofiltration membrane involves coating film casting liquid containing polymer on nonwoven fabric, contacting obtained base film with e.g. aqueous phase solution containing amine monomer to form polyamide functional layer, crosslinking, imidizing, post-treating, and drying.

LIU Z, ZHANG J, HU L, LIANG S, WANG B

Polyvinylidene fluoride composite membrane, used in water treatment, comprises PVDF-based membrane, and poly-dopamine/oxidation graphene composite layer compounded on the film.

ZHAO X, LIU L, ZHU Z, MIAO L, MA J, JIA G

System used for treatment of slop water recovered from wellbore operation, comprises treatment unit comprising inlet, filtration medium comprising particulate pack partially coated with zwitterionic polyelectrolyte, and arranged to separate portions of slop water stream comprising water, and outlet.

JAMISON D E, SHUMWAY W W, PEARL W C

Fluid treatment system for treating fracturing fluid or drilling mud, has first filtration medium having first outlet that is provided on first side of first filtration medium, and second outlet that is provided on second side of first filtration medium to opposite first side.

JAMISON D E, SHUMWAY W W, PEARL W C

Preparation of composite modified film used in water treatment, involves soaking polyvinylidene fluoride film in solution of tris(hydroxymethyl)aminomethane hydrochloride and diaminoguanidine, modifying by oxidation deposition, and immersing film in aminated graphene oxide solution and grafting.

LIN Z, CHEN Z, YOU W, ZHANG B, WANG Y, LIN H, LI S, HUANG Y, LI D

Preparing gas selective separation filter involves providing graphene membrane on sacrificial support layer, subjecting graphene membrane to transient pressurized ozone gas pulse, purging ozone, and cooling down ozone treated graphene membrane.

AGRAWAL K V, HUANG S, HSU K, AGRAWAL K, HWANG S, HUSH K, XU G

Preparing graphene-containing mixed film, comprises e.g. using strong oxidant to oxidize layered graphite powder to form layered graphene oxide with carbonyl, carboxyl and epoxy groups, and mixing Dimethylformamide and graphene oxide.

LIN C, LIU T, CHUANG Y, WEI H, HSU N

Membrane e.g. graphene membrane for use in filter and filtration, has pores that includes relatively large and small pores, filler particles are lodged within relatively large pores and graphene platelets fill relatively small pores.

OGUNTUASE N

Three-dimensional printing technology for production of sewage treatment filter membranes involves establishing multi-porous gradient cylindrical model on three-dimensional Max software, and e.g. exporting stereolithography format.

FAN Z, WANG Z, HAN Z, ZHANG X, LIANG J

Nanoporous membrane used in filter, comprises two-dimensional material permeated by pores which are blocked by polymer derived from monomer and comprising population of pores having average pore diameter.

KIDAMBI P R, CHENG P