Patent US3075828A successfully refreshed from Google Patents.
US3075828A
Expired / Lapsed
US
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Treatment of sea water
Assignee: Asahi Kasei Corp
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Filing: 1959-12-21
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Granted: 1963-01-29
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Kato Tsuneo
- 👤 Ito Masanori
- 👤 Kanno Iwao
- 👤 Takeo Kenji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:58
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/02; B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; C01; C01D; C01D3/00; C01D3/04; C01D3/06; C01F; C01F5/00; C01F5/14; C02F1/00; C02F1/001; C02F1/66; C02F2103/00; C02F2103/08; Y; Y10; Y10S; Y10S159/00; Y10S159/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A METHOD OF TREATING SEA WATER FOR THE RECOVERY OF MAGNESIUM HYDROXIDE, WHICH COMPRISES ADDING MILK OF LIME IN AN AMOUNT OF AT LEAST EQUIVALENT TO CARBONIC ACID COMPONENT CONTAINED IN SEA WATER TO SAID SEA WATER, IMMEDIATELY THEREAFTER PASSING THE RESULTING MIXTURE UPWARDLY THROUGH A SAND LAYER AT SUCH A FLOW RATE THAT THE SAND PARTICLES OF THE SAID LAYER ARE FLUIZIED AND FOR A CONTACT PERIOD OF 5 TO 20 MINUTES AND THEN PASSING THE TREATED SEA WATER THROUGH A VACUUM ZONE THEREBY TO REMOVE RESIDUAL CARBONIC ACID COMPONENT, OXYGEN AND NITROGEN.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |