US3608730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desalination apparatus
Assignee: Veolia WTS Solutions USA Inc
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Filing: 1969-10-02
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Granted: 1971-09-28
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Expires: 1989-10-02
Abstract
Abstract A desalination apparatus in which there is provided a thin desalination membrane that is mounted on a rigid, porous support. The membrane and its support are concentrically located in a tube through which water to be treated is forced under pressure.
Inventors
- 👤 Emil Blaha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/06; B01D63/062; B01D63/065; B01D61/00; B01D61/02; B01D61/08; B01D2313/00; B01D2313/10; B01D2313/12; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
The combination of claim 1 in which there are a plurality of tubes extending between said manifolds and a membrane-covered element in each tube.
Claim 2
Dependent Claim
59 words
The combination of claim 1 in which one end of said tube projects beyond one manifold, said one end being open, said element being received in said open end, means to seal said element to said tube adjacent to said open end, said seal including means through which product liquid can be withdrawn from the interior of said element.
Claim 3
Dependent Claim
63 words
The combination of claim 1 including a second rigid, porous element in the shape of a hollow cylinder having one end open and being surrounded by a semipermeable membrane, means to mount said second element in concentric relation in said tube with its open end adjacent to the other manifold, and means to discharge product liquid from the interior of said second element.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |