Process for growing crystals
US5569325A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1991 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Apr 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/912
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for growing crystals at an enhanced rate comprising providing a dispersion of a fluid medium and seed crystals of a metal oxide, introducing feed material comprising a metal oxide into the dispersion and maintaining a uniform mixture of the seed crystals, the feed material and the fluid medium, the feed material having an average crystal size less than the average crystal size of the seed crystals, the feed material being added in an amount and at a rate whereby the seed crystals grow, the feed material providing a soluble nutrient species for deposition of the said crystal to effect crystal growth, the mixture of seed crystals and feed material being treated under conditions which stimulate crystal growth for a period of time sufficient to obtain a desired quantity of a product comprising at least one grown crystal having an average crystal size greater than the average crystal size of the seed crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.