US3444286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse osmosis membrane composition and manufacture of the membrane
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1966-02-21
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Granted: 1969-05-13
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Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 William M King
- 👤 Paul A Cantor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:55
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/08; B01D71/12; B01D71/14; B01D67/00; B01D67/0002; B01D67/0009; B01D67/0011; C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; B01D2323/00; B01D2323/15; B01D2323/16; B01D61/00; B01D61/02; B01D61/025; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3283042A
Cited
US3250701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |