Patent US3382039A successfully refreshed from Google Patents.
US3382039A
Expired / Lapsed
US
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Preparation and use of silver zeolites of improved exchange capacity
Assignee: Sybron Transition Corp
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Filing: 1965-11-17
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Granted: 1968-05-07
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Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Calmon Calvin
- 👤 Warren T Grundner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:25
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/026; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186
Claims Analysis
Total Claims: 0
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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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |