US3347640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesia-alumina buffer compositions
Assignee: Warner Lambert Co LLC
•
Filing: 1963-03-22
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Granted: 1967-10-17
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Higuchi Takeru
- 👤 Hom Foo Song
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:26
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0086
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
COMPOUNDS HAVING THE FORMULA 3MGO$AL2O3$SO3 PLUS WATER OF HYDRATION.
Claim 2
Dependent Claim
9 words
COMPOUNDS HAVING THE FORMULA 3MGO$AL2O3$SO3 PLUS WATER OF HYDRATION.
Claim 3
Dependent Claim
54 words
A PROCESS FOR PREPARING THE COMPOUND HAVING THE FORMULA 3MGO$AL2O3$SO3 PLUS WATER OF HYDRATION, WHICH COMPRISES MIXING AN ALKALI METAL ALUMINATE, A SOURCE OF MAGNESIUM IONS AND A SOURCE OF SULFATE IONS IN AN AQUEOUS SOLUTION BUFFERED TO A PH IN THE RANGE OF ABOUT 7.0 TO ABOUT 8.5 AND RECOVERING THE RESULTING PRECIPITATE.
Claim 4
Dependent Claim
54 words
A PROCESS FOR PREPARING THE COMPOUND HAVING THE FORMULA 3MGO$AL2O3$SO3 PLUS WATER OF HYDRATION, WHICH COMPRISES MIXING AN ALKALI METAL ALUMINATE, A SOURCE OF MAGNESIUM IONS AND A SOURCE OF SULFATE IONS IN AN AQUEOUS SOLUTION BUFFERED TO A PH IN THE RANGE OF ABOUT 7.0 TO ABOUT 8.5 AND RECOVERING THE RESULTING PRECIPITATE.
References Cited (Backward Citations)
US1914178A
Cited
US2413184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |