US3540986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation condensation apparatus with vapor compression and semipermeable membrane
Assignee: Individual
•
Filing: 1968-11-27
•
Granted: 1970-11-17
•
Expires: 1988-11-27
Abstract
No abstract record available.
Inventors
- 👤 Louis Joseph Guarino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:18
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/36; B01D61/364; B01D61/3641; B01D1/00; B01D1/28; Y; Y10; Y10S; Y10S159/00; Y10S159/27; Y10S159/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2386826A
Cited
US2441361A
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US3240623A
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US3161574A
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US3129145A
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US3303105A
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US3405058A
Cited
US3340186A
Cited
US3361645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |