US2863739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous production of crystalline substances
Assignee: Hoechst AG
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Filing: 1955-07-12
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Granted: 1958-12-09
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Expires: 1975-07-12
Abstract
No abstract record available.
Inventors
- 👤 Erbe Friedrich
- 👤 Maikowski Michael Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:12
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/393; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0036; B01J; B01J2/00; B01J2/10; C; C01; C01B; C01B17/00; C01B17/02; C01B17/0205; C01B17/0216; C01B17/0237; C01B25/00; C01B25/16; C01B25/26; C01B25/30; C01B33/00; C01B33/20; C01B33/32; C01C; C01C1/00; C01C1/24; C01C1/248; C07; C07C; C07C17/00; C07C17/38; C07C17/392; G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE CONTINUOUS PRODUCTION OF CRYSTALLINE MATERIAL RANGING FROM POWDERED TO GRANULATED FORM FROM CRYSTALLIZABLE MELTS, WHICH COMPRISES CONTINUOUSLY AND INTIMATELY KNEADING THE MELT WITH AN EXCESS OF CRYSTALS OF SAID MATERIAL WHICH HAVE ALREADY FORMED AND WITH THE CRYSTALS FORMING, WHILE DISSIPATING THE LIBERATED HEAT OF CRYSTALLIZATION.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE CONTINUOUS PRODUCTION OF CRYSTALLINE MATERIAL RANGING FROM POWDERED TO GRANULATED FORM FROM CRYSTALLIZABLE MELTS, WHICH COMPRISES CONTINUOUSLY AND INTIMATELY KNEADING THE MELT WITH AN EXCESS OF CRYSTALS OF SAID MATERIAL WHICH HAVE ALREADY FORMED AND WITH THE CRYSTALS FORMING, WHILE DISSIPATING THE LIBERATED HEAT OF CRYSTALLIZATION.
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |