Patent US3243258A successfully refreshed from Google Patents.
US3243258A
Expired / Lapsed
US
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Production of insoluble salts of 12-heteropolyacids
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1962-04-02
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Granted: 1966-03-29
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Jakob Van R Smit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:42
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45; B; B01; B01J; B01J39/00; B01J39/08; B01J39/09; B01J39/12; C01B33/00; C01B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF PRODUCING COARSE CRYSTALS OF AN INSOLUBLE SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM, POTASSIUM, RUBIDIUM, CAESIUM, MONOVALENT SILVER, MONOVALENT THALLIUM AND MONOVALENT MERCURY SALTS OF A 12-HETEROPOLYACID OF THE TYPE H3XO4.12Y03 WHERE X IS ONE OF THE GROUP CONSISTING OF SILICON, PHOSPHORUS AND ARSENIC AND Y IS ONE OF THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN, SUCH METHOD COMPRISING THE STEPS OF ADDING CRYSTALS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE HYDRATED FORM OF THE SAID 12HETEROPOLYACID HAVING THE FORMULA H3XO4*12YO3*24H2O, AND THE ISOMORPHOUS SOLUBLE INORGANIC SALTS THEREOF TO A NON-ALKALINE AQUEOUS SOLUTION CONTAINING CATIONS SELECTED FROM THE GROUP OF AMMONIUM, POTASSIUM, RUBIDIUM, CAESIUM, MONOVALENT SILVER, MONOVALENT THALLIUM AND MONOVALENT MERCURY WITH MINIMUM DISTURBANCE OF THE CRYSTALS TO CONVERT SAID CRYSTALS TO CRYSTALS OF SAID INSOLUBLE SALT HAVING A PARTICLE SIZE OF AT LEAST ABOUT 76 MICRONS.
Claim 2
Independent Claim
144 words
A METHOD OF PRODUCING COARSE CRYSTALS OF AN INSOLUBLE SALT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM, POTASSIUM, RUBIDIUM, CAESIUM, MONOVALENT SILVER, MONOVALENT THALLIUM AND MONOVALENT MERCURY SALTS OF A 12-HETEROPOLYACID OF THE TYPE H3XO4.12Y03 WHERE X IS ONE OF THE GROUP CONSISTING OF SILICON, PHOSPHORUS AND ARSENIC AND Y IS ONE OF THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN, SUCH METHOD COMPRISING THE STEPS OF ADDING CRYSTALS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE HYDRATED FORM OF THE SAID 12HETEROPOLYACID HAVING THE FORMULA H3XO4*12YO3*24H2O, AND THE ISOMORPHOUS SOLUBLE INORGANIC SALTS THEREOF TO A NON-ALKALINE AQUEOUS SOLUTION CONTAINING CATIONS SELECTED FROM THE GROUP OF AMMONIUM, POTASSIUM, RUBIDIUM, CAESIUM, MONOVALENT SILVER, MONOVALENT THALLIUM AND MONOVALENT MERCURY WITH MINIMUM DISTURBANCE OF THE CRYSTALS TO CONVERT SAID CRYSTALS TO CRYSTALS OF SAID INSOLUBLE SALT HAVING A PARTICLE SIZE OF AT LEAST ABOUT 76 MICRONS.
References Cited (Backward Citations)
US2788258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |