Patent US826851A successfully refreshed from Google Patents.
Patent US3357801A successfully refreshed from Google Patents.
US3357801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage of soda ash slurries
Assignee: Honeywell International Inc
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Filing: 1963-11-12
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Granted: 1967-12-12
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 William H Weed
- 👤 John M Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:21
CPC Classifications
B; B01; B01F; B01F21/00; B01F21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR PRODUCING A CLEAR, SATURATED SODIUM CARBONATE SOLUTION, SUBSTANTIALLY DEVOID OF SOLIDS, FROM A SODIUM CARBONATE MONOHYDRATE SLURRY STORAGE SYSTEM COMPRISING: (A) PROVIDING, INITIALLY, A LOWER LAYER OF SAID SLURRY AND A SUPERNATANT AQUEOUS LAYER; (B) WITHDRAWING A CLEAR SOLUTION BEING SUBSTANTIALLY FREE OF SUSPENDED CRYSTALS FO SODIUM CARBONATE MONOHYDRATE FROM A LEVEL BELOW THE TOP OF THE LAYER OF SLURRY UPWARDLY THROUGH SAID SLURRY LAYER AND SUPERMATANT LAYER IN AN ENCLOSED, UNOBSTRUCTED PATH AT A VELOCITY WHICH DOES NOT EXCEED 0.3 FT./MIN.;
Claim 2
Dependent Claim
85 words
A PROCESS FOR PRODUCING A CLEAR, SATURATED SODIUM CARBONATE SOLUTION, SUBSTANTIALLY DEVOID OF SOLIDS, FROM A SODIUM CARBONATE MONOHYDRATE SLURRY STORAGE SYSTEM COMPRISING: (A) PROVIDING, INITIALLY, A LOWER LAYER OF SAID SLURRY AND A SUPERNATANT AQUEOUS LAYER; (B) WITHDRAWING A CLEAR SOLUTION BEING SUBSTANTIALLY FREE OF SUSPENDED CRYSTALS FO SODIUM CARBONATE MONOHYDRATE FROM A LEVEL BELOW THE TOP OF THE LAYER OF SLURRY UPWARDLY THROUGH SAID SLURRY LAYER AND SUPERMATANT LAYER IN AN ENCLOSED, UNOBSTRUCTED PATH AT A VELOCITY WHICH DOES NOT EXCEED 0.3 FT./MIN.;
References Cited (Backward Citations)
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Cited
US2721209A
Cited
US2887360A
Cited
US2962348A
Cited
US3119655A
Cited
US3232700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |