US2888323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of active oxides of large specific surface area
Assignee: National Research Council Canada
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Filing: 1955-12-13
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Granted: 1959-05-26
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Expires: 1975-12-13
Abstract
No abstract record available.
Inventors
- 👤 Stanislas J Teichner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:04
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01P; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A PROCESS FOR THE PRODUCTION OF ACTIVE OXIDES OF LARGE SPECIFIC SURFACE AREA WHICH PROCESS COMPRISES: (1) DISSOLVING A SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF FE, CR, MN, NI, CO, TI, V, MO, CU, ZN, MG, AND AL IN A SOLVENT SELECTED FROM THE GROUP CONSISTING AND METHANOL AND ACETONE; (2) PRECIPITATING SAID SALT, IN THE FORM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDES AND HYDROXIDES, FROM SAID SOLVENT BY CHEMICAL REACTION OF THE SALT WITH A BASE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, ANILINE, ALKALI METAL HYDROXIDES AND ANHYDROUS AMMONIA, THE REACTION TAKING PLACE AT A TEMPERATURE BELOW THE BOILING POINT O SAID SOLVENT; AND (3) CONTROLLING THE AMOUNT OF WATER PRESENT IN THE SYSTEM DURING THE CHEMICAL REACTION BETWEEN THE SALT AND THE BASE TO AN AMOUNT BETWEEN X MOLES OF WATER PER GRAM ION OF SALT CATION, WHERE X IS A VALENCE OF SAID CATION, AND 20% BY WEIGHT OF SOLVENT.
Claim 2
Dependent Claim
162 words
A PROCESS FOR THE PRODUCTION OF ACTIVE OXIDES OF LARGE SPECIFIC SURFACE AREA WHICH PROCESS COMPRISES: (1) DISSOLVING A SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF FE, CR, MN, NI, CO, TI, V, MO, CU, ZN, MG, AND AL IN A SOLVENT SELECTED FROM THE GROUP CONSISTING AND METHANOL AND ACETONE; (2) PRECIPITATING SAID SALT, IN THE FORM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDES AND HYDROXIDES, FROM SAID SOLVENT BY CHEMICAL REACTION OF THE SALT WITH A BASE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, ANILINE, ALKALI METAL HYDROXIDES AND ANHYDROUS AMMONIA, THE REACTION TAKING PLACE AT A TEMPERATURE BELOW THE BOILING POINT O SAID SOLVENT; AND (3) CONTROLLING THE AMOUNT OF WATER PRESENT IN THE SYSTEM DURING THE CHEMICAL REACTION BETWEEN THE SALT AND THE BASE TO AN AMOUNT BETWEEN X MOLES OF WATER PER GRAM ION OF SALT CATION, WHERE X IS A VALENCE OF SAID CATION, AND 20% BY WEIGHT OF SOLVENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |