US2883273A
Expired / Lapsed
US
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Crystallization
Assignee: Olin Corp
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Filing: 1957-02-14
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Granted: 1959-04-21
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Walter C Saeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:59
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/24; C01C1/248; B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0036; C01C1/18; Y; Y10; Y10S; Y10S159/00; Y10S159/25; Y10S159/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A CRYSTALLIZATION PROCESS OCCURING IN A SINGLE, VERTICAL REACTION VESSEL WHEREIN THERE IS A SUSPENSION OF PRODUCT SIZE AND FINE CRYSTALS NORMALLY MIXED TOGETHER IN A TURBULENT SOLUTION, A METHOD OF ELIMINATING EXEXCESSIVE FINE CRYSTALS FROM SAID MIXED SUSPENSION COMPRISING THE STEPS OF ESTABLISHING AN INTERNAL QUIESCENT ZONE WITHIN SAID SUSPENSION, SAID ZONE FALLING WITHIN THE INTERMEDIATE REGION OF THE VESSEL, DIRECTING SAID FINE CRYSTALS OUT OF THE MIXED SUSPENSION TOWARDS SAID QUIESCENT
Claim 2
Dependent Claim
74 words
IN A CRYSTALLIZATION PROCESS OCCURING IN A SINGLE, VERTICAL REACTION VESSEL WHEREIN THERE IS A SUSPENSION OF PRODUCT SIZE AND FINE CRYSTALS NORMALLY MIXED TOGETHER IN A TURBULENT SOLUTION, A METHOD OF ELIMINATING EXEXCESSIVE FINE CRYSTALS FROM SAID MIXED SUSPENSION COMPRISING THE STEPS OF ESTABLISHING AN INTERNAL QUIESCENT ZONE WITHIN SAID SUSPENSION, SAID ZONE FALLING WITHIN THE INTERMEDIATE REGION OF THE VESSEL, DIRECTING SAID FINE CRYSTALS OUT OF THE MIXED SUSPENSION TOWARDS SAID QUIESCENT
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |