US2948967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating alkali metal carbonates
Assignee: Diamond Shamrock Corp
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Filing: 1959-03-02
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Granted: 1960-08-16
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Expires: 1979-03-02
Abstract
No abstract record available.
Inventors
- 👤 Clyde B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:39
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR TREATING DRY, SOLID ALKALI METAL CARBONATE PARTICLES TO DECREASE THEIR TENDENCY TO FORM COHESIVE MASSES WHICH COMPRISES THE STEP OF CONTACTING A MASS OF SAID PARTICLES OF A PARTICLE SIZE NOT IN EXCESS OF 12 MESH, NOT MORE THAN 5% OF SAID PARTICLES EXCEEDING 20 MESH, WITH AT LEAST 15% OF SAID PARTICLES OF A PARTICLE SIZE NOT IN EXCESS OF 200 MESH, WITH A GAS COMPRISING CARBON DIOXIDE, NOT MORE THAN 5% OF SAID GAS BEING WATER VAPOR, THE REMAINING CONSTITUENTS OF WHICH GAS ARE CHEMICALLY INERT WITH RESPECT TO THE ALKALI METAL CARBONATE, SAID CONTACT BEING AT A TEMPERATURE BELOW THAT AT WHICH CALCINATION OF SAID ALKALI METAL CARBONATE OCCURS.
Claim 2
Dependent Claim
115 words
A PROCESS FOR TREATING DRY, SOLID ALKALI METAL CARBONATE PARTICLES TO DECREASE THEIR TENDENCY TO FORM COHESIVE MASSES WHICH COMPRISES THE STEP OF CONTACTING A MASS OF SAID PARTICLES OF A PARTICLE SIZE NOT IN EXCESS OF 12 MESH, NOT MORE THAN 5% OF SAID PARTICLES EXCEEDING 20 MESH, WITH AT LEAST 15% OF SAID PARTICLES OF A PARTICLE SIZE NOT IN EXCESS OF 200 MESH, WITH A GAS COMPRISING CARBON DIOXIDE, NOT MORE THAN 5% OF SAID GAS BEING WATER VAPOR, THE REMAINING CONSTITUENTS OF WHICH GAS ARE CHEMICALLY INERT WITH RESPECT TO THE ALKALI METAL CARBONATE, SAID CONTACT BEING AT A TEMPERATURE BELOW THAT AT WHICH CALCINATION OF SAID ALKALI METAL CARBONATE OCCURS.
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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |