Synthesis of ultra-large graphene oxide sheets

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9452934
APP PUB NO 20150071844A1
SERIAL NO

14482465

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Ultra-large graphene oxide (UL-GO) sheets are formed using a Langmuir-Blodgett (LB) thin film process. Sulfuric acid and nitric acid are applied to interlayers of natural graphite flake to form graphite intercalation compound (GIC) powders. The GIC powders are expanded at a high temperature, and intercalating agents are used to further oxidize the expanded GIC powders by to exfoliating the EG into monolayer graphene oxide (GO) sheets. The GO is sequentially centrifuged and UL-GO sheets are collected. An LB thin film is prepared from the collected sheets and the thin films are reduced and chemically doped.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYHONGKONG KOWLOON CLEAR WATER BAY CHINA HONG KONG HONG KONG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Au, Sheung Man Hong Kong, CN 1 5
Jia, Jingjing Hong Kong, CN 1 5
Kan, Chak Ming Hong Kong, CN 1 5
Kim, Jang Kyo Hong Kong, CN 3 11
Lin, Xiuyi Hong Kong, CN 2 5

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 27, 2028
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00