US3304154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing spheroidal alkaline earth metal carbonates
Assignee: Individual
•
Filing: 1964-02-17
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Granted: 1967-02-14
•
Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Kiouzes-Pezas Dimitrios
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/18; C01F11/181
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
A METHOD FOR PRODUCING A NON-COLLOIDAL ALKALINE EARTH METAL CARBONATE IN FINELY DIVIDED, GENERALLY SPHERIODAL FORM COMPRISING THE STEPS OF INTRODUCING CARBON DIOXIDE UNDER PRESSURE INTO A REACTION VESSEL CONTAINING AN AQUEOUS SUSPENSION OF AN ALKALINE EARTH METAL HYDROXIDE AND ROTATING THE VESSEL UNTIL THE PRESSURE STABILIZES ABOVE THE ZERO GUAGE.
References Cited (Backward Citations)
US3150926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |