Solid oxidizer with dissolution indicator
US6528466B1 · kind B1 · utility
4Cited by
23References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Aug 15, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/76
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of providing a solid oxidizer to a tank of water, while also providing a way to indicate when it is time to add more oxidizer. The preferred method includes providing the solid oxidizer in the form of an oxidizer shell with a coloring agent disposed therein. The coloring agent is substantially color stable when stored in the oxidizer shell, and the oxidizer shell is formed and shaped to enclose the coloring agent in a manner in which the coloring agent is prevented from dispersing into the water until the oxidizer shell is substantially dissolved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.