Patent · US Expired

Block paving sand

US6824602B2 · kind B2 · utility

0Cited by
6References
10Claims
0Family size

Inventors

Key dates

Filing dateAug 30, 2002
Grant dateNov 30, 2004
Priority date—
Expiry dateAug 30, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC04B2111/00672
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

An improved block paving sand comprising kiln dried sand mixed with a water-soluble polymer. The block paving sand is filled into gaps between blocks and then water is applied thereto. Upon contact with the water, the polymer coats the sand and then sets hard, thereby stabilising the block paving.

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