US3306710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for crystallizing salts and salt solutions
Assignee: STANDARD MESSO DUISBURG
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Filing: 1964-11-02
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Granted: 1967-02-28
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Messing Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:53
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0036; Y; Y10; Y10S; Y10S159/00; Y10S159/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
AN APPARATUS FOR PRODUCING CRYSTALS FROM SALT SOLUTION COMPRISING A CONTAINER MEANS, A ROTATABLE SUBSTANTIALLY VERTICAL SHAFT IN SAID CONTAINER MEANS, FUNNEL SHAPED WALL MEANS CONNECTED TO AN EXTENDING DOWNWARDLY FROM THE SIDES OF SAID CONTAINER THEREBY SUBDIVIDING SAID CONTAINER MEANS INTO AN UPPER CHAMBER AND A LOWER CHAMBER, SAID WALL MEANS BEING PROVIDED WITH A CIRCULAR OPENING AT ITS BOTTOM CONCENTRIC WITH SAID SHAFT, SAID LOWER CHAMBER BEING PROVIDED WITH A SOLUTION INLET FOR ADMITTING SOLUTION TO BE CRYSTALLIZED, FIRST TUBULAR MEANS SURROUNDING SAID SHAFT IN SPACED RELATION THERETO AND FORMING A FIRST ANNULAR PASSAGE ESTABLISHING LIQUID COMMUNICATION BETWEEN SAID UPPER AND LOWER CHAMBERS, BLADE MEANS ROTATABLY CONNECTED TO SAID SHAFT AND LOCATED WITHIN SAID FIRST ANNULAR PASSAGE FOR DRAWING SOLUTION FROM SAID LOWER CHAMBER AND COVEYING THE SOLUTION THROUGH THE FIRST ANNULAR PASSAGE TO SAID UPPER CHAMBER, SECOND TUBULAR MEANS ARRANGED WITHIN SAID LOWER CHAMBER AND SURROUNDING SAID FIRST TUBULAR MEANS IN SPACED CONCENTRIC RELATION THERETO, SAID SECOND TUBULAR MEANS BEING CONNECTED TO SAID WALL MEANS AT THE CIRCULAR OPENING AT THE
Claim 2
Independent Claim
174 words
AN APPARATUS FOR PRODUCING CRYSTALS FROM SALT SOLUTION COMPRISING A CONTAINER MEANS, A ROTATABLE SUBSTANTIALLY VERTICAL SHAFT IN SAID CONTAINER MEANS, FUNNEL SHAPED WALL MEANS CONNECTED TO AN EXTENDING DOWNWARDLY FROM THE SIDES OF SAID CONTAINER THEREBY SUBDIVIDING SAID CONTAINER MEANS INTO AN UPPER CHAMBER AND A LOWER CHAMBER, SAID WALL MEANS BEING PROVIDED WITH A CIRCULAR OPENING AT ITS BOTTOM CONCENTRIC WITH SAID SHAFT, SAID LOWER CHAMBER BEING PROVIDED WITH A SOLUTION INLET FOR ADMITTING SOLUTION TO BE CRYSTALLIZED, FIRST TUBULAR MEANS SURROUNDING SAID SHAFT IN SPACED RELATION THERETO AND FORMING A FIRST ANNULAR PASSAGE ESTABLISHING LIQUID COMMUNICATION BETWEEN SAID UPPER AND LOWER CHAMBERS, BLADE MEANS ROTATABLY CONNECTED TO SAID SHAFT AND LOCATED WITHIN SAID FIRST ANNULAR PASSAGE FOR DRAWING SOLUTION FROM SAID LOWER CHAMBER AND COVEYING THE SOLUTION THROUGH THE FIRST ANNULAR PASSAGE TO SAID UPPER CHAMBER, SECOND TUBULAR MEANS ARRANGED WITHIN SAID LOWER CHAMBER AND SURROUNDING SAID FIRST TUBULAR MEANS IN SPACED CONCENTRIC RELATION THERETO, SAID SECOND TUBULAR MEANS BEING CONNECTED TO SAID WALL MEANS AT THE CIRCULAR OPENING AT THE
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |