Wholly inoganic papers and membranes suitable for ion exchange made of thorium acid phosphate and process for preparing the same
US3985611A · kind A · utility
0Cited by
5References
2Claims
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Key dates
| Filing date | Jul 15, 1971 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Jul 15, 1991 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Inorganic layers, papers and membranes for ion exchange are made of fibrous thorium acid phosphate with a ratio PO.sub.4 /Th in the solid of about 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.