US3400825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desalination cell with osmotic membrane element
Assignee: AQUA MAN Inc A CORP OF CA
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Filing: 1966-08-22
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Granted: 1968-09-10
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Frank R Shippey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:48
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/08; B01D63/00; B01D63/06; B01D63/062; B01D63/065; B01D69/00; B01D69/04; B01D69/046; B01D2313/00; B01D2313/21; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US661373A
Cited
US655841A
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FR705608A
Cited
US2022164A
Cited
US2661095A
Cited
US3240342A
Cited
US3156645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |