Patent · US Expired

Process for producing activated charcoal

US5391534A · kind A · utility

5Cited by
4References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 2, 1993
Grant dateFeb 21, 1995
Priority date—
Expiry dateNov 2, 2013

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01B32/342
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A process for preparing activated charcoal having a high surface area is described, including a thermal treatment, in the presence of phosphoric acid, of regenerated humic acids.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.