	US 12,466,770 B2
	Preparation of hydrous graphene oxide for use as a concrete admixture
Mark Masotti, Toronto (CA)
Assigned to ALTER BIOTA INC., Toronto (CA)
Appl. No. 17/616,641
Filed by Alter Biota Inc., Sydney (CA)
PCT Filed Jul. 6, 2020, PCT No. PCT/CA2020/050939 § 371(c)(1), (2) Date Dec. 4, 2021, PCT Pub. No. WO2021/003565, PCT Pub. Date Jan. 14, 2021.
Claims priority of provisional application 62/871,355, filed on Jul. 8, 2019.
Prior Publication US 2022/0234955 A1, Jul. 28, 2022
Int. Cl. C01B 32/198 (2017.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 103/30 (2006.01); C04B 103/40 (2006.01)

CPC C04B 28/02 (2013.01) [C01B 32/198 (2017.08); C04B 40/0039 (2013.01); C04B 40/005 (2013.01); C04B 2103/302 (2013.01); C04B 2103/408 (2013.01); C04B 2201/50 (2013.01)]

16 Claims

1. A process for manufacturing an aqueous dispersion of graphene oxide, the process comprising:

subjecting biochar in a solvent, the solvent comprising water, to a high-shear rotor-stator mixing environment in the presence of a dispersing agent to exfoliate graphene oxide.