Ship bottom paint using coal ash and diatomaceous earth
US7048788B2 · kind B2 · utility
0Cited by
12References
26Claims
0Family size
Inventors
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Aug 5, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A ship bottom paint additive to prevent or reduce marine life attachment to the bottoms of ships, and ship bottom paint comprises a mixture of coal ash and diatom earth or beer yeast diatom earth wherein the coal ash is preferably fly ash and the diatom earth or beer yeast diatom earth is preferably a dry powder. The additive is a mixture may have a weight ratio within the range of about 3:1 to 7:1, and may be comprised of about 2.25–10% by weight coal ash and about 0.375–5% by weight diatom earth or beer yeast diatom earth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.