US3283522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Struthers Scientific and International Corp
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Filing: 1963-11-04
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Granted: 1966-11-08
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Ganiaris Neophytos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/24; A23F5/28; A23F5/30; A23B; A23B2/00; A23B2/90; A23B2/905; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; B; B01; B01D; B01D9/00; B01D9/02; B01D9/04; C; C12; C12H; C12H6/00; C12H6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A PROCESS OF CONCENTRATING AN AQUEOUS SOLUTION BY CRYSTALLIZATION OF ICE, SEPARATING THE ICE FROM THE SOLUTION, AND RECOVERING THE SOLUTION RETAINED ON THE ICE BY WASHING, THE STEPS WHICH COMPRISE (A) COOLING AN AQUEOUS SOLUTION IN A PLURALITY OF CRYSTALLIZATION STEPS TO SLURRIES CONTAINING ICE CRYSTALS AND CONCENTRATED AQUEOUS SOLUTIONS, THE CONCENTRATION OF THE AQUEOUS SOLUTIONS INCREASING IN EACH SUCCEEDING CRYSTALLIZATION STEP, (B) SEPARATING, IN A PLURALITY OF ICE SEPARATING STEPS, THE ICE FROM THE SLURRY OF EACH CRYSTALLIZATION STEP, (C) PASSING EACH CONCENTRATED SOLUTION TO A SUCCEEDING CRYSTALLIZATION STEP, (D) PASSING BACK ALL OF THE ICE FROM ALL SUCCEEDING ICE SEPARATION STEPS TO THE FIRST CRYSTALLIZATION STEP PRODUCING A LESS CONCENTRATED SOLUTION, AND (E) RECOVERING, BY WASHING, THE SOLUTION FROM THE ICE SEPARATED FROM THE FIRST CYRSTALLIZATION STEP.
Claim 2
Dependent Claim
131 words
IN A PROCESS OF CONCENTRATING AN AQUEOUS SOLUTION BY CRYSTALLIZATION OF ICE, SEPARATING THE ICE FROM THE SOLUTION, AND RECOVERING THE SOLUTION RETAINED ON THE ICE BY WASHING, THE STEPS WHICH COMPRISE (A) COOLING AN AQUEOUS SOLUTION IN A PLURALITY OF CRYSTALLIZATION STEPS TO SLURRIES CONTAINING ICE CRYSTALS AND CONCENTRATED AQUEOUS SOLUTIONS, THE CONCENTRATION OF THE AQUEOUS SOLUTIONS INCREASING IN EACH SUCCEEDING CRYSTALLIZATION STEP, (B) SEPARATING, IN A PLURALITY OF ICE SEPARATING STEPS, THE ICE FROM THE SLURRY OF EACH CRYSTALLIZATION STEP, (C) PASSING EACH CONCENTRATED SOLUTION TO A SUCCEEDING CRYSTALLIZATION STEP, (D) PASSING BACK ALL OF THE ICE FROM ALL SUCCEEDING ICE SEPARATION STEPS TO THE FIRST CRYSTALLIZATION STEP PRODUCING A LESS CONCENTRATED SOLUTION, AND (E) RECOVERING, BY WASHING, THE SOLUTION FROM THE ICE SEPARATED FROM THE FIRST CYRSTALLIZATION STEP.
References Cited (Backward Citations)
US1931347A
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US2666304A
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US2777888A
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US3004397A
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US3102036A
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US3069864A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |