US3239459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of water from saline solution
Assignee: Patterson Hydro Chemical Corp
•
Filing: 1962-12-03
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Granted: 1966-03-08
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 John A Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:52
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/26; C02F1/265; Y; Y10; Y10S; Y10S159/00; Y10S159/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF RECOVERING WATER WHICH IS SUBSTANTIALLY SALT-FREE WATER FROM A SALINE SOLUTION WHICH COMPRISES FIRST CONTACTING THE SALT WATER WITH A HYDROPHILIC ORGANIC SOLVENT HAVING A HYDROCARBON GROUP AND A TERMINAL OXYGEN CONTAINING GROUP TO PRODUCE A SATURATED SOLUTION OF WATER IN SOLVENT AND THEN SEPARATING THE HY-
Claim 2
Independent Claim
50 words
THE METHOD OF RECOVERING WATER WHICH IS SUBSTANTIALLY SALT-FREE WATER FROM A SALINE SOLUTION WHICH COMPRISES FIRST CONTACTING THE SALT WATER WITH A HYDROPHILIC ORGANIC SOLVENT HAVING A HYDROCARBON GROUP AND A TERMINAL OXYGEN CONTAINING GROUP TO PRODUCE A SATURATED SOLUTION OF WATER IN SOLVENT AND THEN SEPARATING THE HY-
References Cited (Backward Citations)
US2967825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |