Inventor

CHENG WEIGUO

US38 patents

⚠️ This page may combine multiple inventors who share the name “CHENG WEIGUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHENG WEIGUO

ECOLAB USA INC

Wet end chemicals for dry end strength

Wet end chemicals for dry end strength in paper

Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention, wet strength, and dry strength in papermaking process

Method for improving overflow clarity in production of coal

Enhancement of sheet dewatering using soy flour or soy protein

Wet end chemicals for dry end strength in paper

Recovery of mining processing product using boronic acid-containing polymers

Dry polymer application method

Boronic acid containing polymers for papermaking process

Low molecular weight dry powder polymer for use as paper-making dry strength agent

Recovery of mining processing product using boronic acid-containing polymers

Low molecular weight dry powder polymer for use as paper-making dry strength agent

Method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking

Composition and method for papermaking

Solution comprising an associative polymer and a cyclodextrin polymer

Hydrazide crosslinked polymer emulsions for use in crude oil recovery

Process for fast dissolution of powder comprising low molecular weight acrylamide-based polymer

Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process

Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process

Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process

Papermaking process of increasing ash content of a paper product and a paper product obtained by the same

Enhancement of dewatering using soy flour or soy protein

CHENG WEIGUO

Controllable filler prefloculation using a dual polymer system

Controllable filler prefloculation using a dual polymer system

Method of increasing filler content in papermaking

Controllable filler prefloculation using a dual polymer system

Method of increasing filler content in papermaking

Preflocculation of fillers used in papermaking

NALCO CO

Recycling of waste coating color

Method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking

Furnish pretreatment to improve paper strength aid performance in papermaking

Method of increasing paper strength by using natural gums and dry strength agent in the wet end

Anionic preflocculation of fillers used in papermaking

ZHAO YULIN

Furnish pretreatment to improve paper strength aid performance in papermaking

Method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking

Method to increase dewatering, sheet wet web strength and wet strength in papermaking

INST PROCESS ENG CAS

System and process for co-producing dimethyl carbonate and ethylene glycol

ZHANG SUOJIANG

Process for producing ethylene glycol catalyzed by ionic liquid