US3725014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium carbonate crystallization process with foam prevention
Assignee: Honeywell International Inc
•
Filing: 1971-04-21
•
Granted: 1973-04-03
•
Expires: 1991-04-21
Abstract
Abstract INVENTION RELATES TO THE PREPARATION OF SODIUM CARBONATE PRECURSOR CRYSTALS, SUCH AS SODIUM BICARBONATE, SODIUM SESQUICARBONATE, ANHYDROUS SODIUM CARBONATE, AND SODIUM CARBONATE MONOHYDRATE BY A CRYSTALLIZATION PROCESS WHICH INVOLVES CRYSTALLIZING SAID PRECURSOR CRYSTALS FROM A CARBONATE PROCESS SOLUTION IN THE PRESENCE OF AN ANTIFOAMING EFFECTIVE AMOUNT OF A CATIONIC SURFACE ACTIVE AGENT AND SEPARATING THE CRYSTALS FORMED FROM THE MOTHER LIQUOR.
Inventors
- 👤 R Poncha
- 👤 N Garofano
- 👤 A Gancy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0413; B01D9/00; B01D9/005; C; C01; C01D; C01D7/00; C01D7/10; C01D7/22; C01D7/24; C01D7/35; C01D7/38; C01D7/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |