Patent US2607660A successfully refreshed from Google Patents.
US2607660A
Expired / Lapsed
US
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Purification of water-soluble substances
Assignee: Honeywell International Inc
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Filing: 1946-11-07
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Granted: 1952-08-19
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Expires: 1966-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robertson Harold Eugene
- 👤 Port Eugene Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:00
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/18; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0288; C01C; C01C1/00; C01C1/24; C01D17/00; C01D17/003; C01D7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF WASHING WATER-SOLUBLE PARTICLES OF THE GROUP CONSISTING OF ALKALI-METAL AND AMMONIUM SALTS WET WITH AN AQUEOUS SOLUTION OF IMPURITIES OF SAID GROUP, WITH COMPRISES WASHING THE WET PARTICLES WITH WATER SUBSTANTIALLY FREE OF SAID IMPURITIES AND CONTAINING A WETTING AGENT.
Claim 2
Independent Claim
43 words
THE METHOD OF WASHING WATER-SOLUBLE PARTICLES OF THE GROUP CONSISTING OF ALKALI-METAL AND AMMONIUM SALTS WET WITH AN AQUEOUS SOLUTION OF IMPURITIES OF SAID GROUP, WITH COMPRISES WASHING THE WET PARTICLES WITH WATER SUBSTANTIALLY FREE OF SAID IMPURITIES AND CONTAINING A WETTING AGENT.
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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |