国家/地区 美国（6）
IPC部 C（6）
IPC大类 C01（6）
IPC小类 C01B（6） D01F（5） B82Y（3）
C08F（2） C10B（2） C10C（2）
C10G（2） G01N（2）
IPC C01B032/05（6）
发明人 ATKINS C A（2） LINDEMANN G W（2） TARGETT M（2）
公开年 2021（4）
申请年 2020（2）  2021（2） 
专利权人 CARBON HOLDI.（2）

Producing graphene or carbon fiber involves extracting coal sample from location, performing spectral analysis on coal sample to detect hydrogen to carbon ratio of coal sample, concentration of contaminant in coal sample.

TARGETT M, LINDEMANN G W, ATKINS C A

Pitch-based ultrafine carbon fiber comprises specific nitrogen atom content measured by X-ray photoelectron spectroscopy, and has specified average fiber diameter and true density.

YAGI K, KOMURA S, HIRAKAWA R

Preparing carbon fibers used in article involves converting coal to low-softening point carbon pitch, extruding the pitch into carbon fibers, adding graphite/graphene sheath to the carbon fibers and calcining the carbon fibers, in which the pitch has high oxygen content.

STILLER A H

Producing reduced graphene oxide from coal by thermally processing coal, oxidizing thermally processed coal to form coal oxide, and forming reduced graphene oxide comprising impurity atoms from coal oxide.

ATKINS C A, LINDEMANN G W, TARGETT M

Manufacture method of high strength composite reinforcing fiber, involves coating graphene oxide flakes on conventional reinforcing fiber.

CHRISTIANSEN S, RESTREPO D, STOLTZ R, BULLINGTON J

Concurrently forming ammonia and solid carbon products e.g. graphene, includes reacting carbon oxide, nitrogen and reducing agent in presence of catalyst to form solid carbon entrained in tail gas mixture, and recovering ammonia.

NOYES D B