Patent US3759842A successfully refreshed from Google Patents.
US3759842A
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US
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Assignee: De Nora SpA
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Filing: 1971-01-26
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Granted: 1973-09-18
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Expires: 1991-01-26
Abstract
Abstract GRAPHITE IMPREGNATED WITH AT LEAST ONE VALVE METAL OXIDE SUCH AS MOLYBDENUM OXIDE ALONE OR OPTIONALLY CODEPOSITED WITH AN OXIDE OF A METAL OF THE EIGHTH GROUP OF THE PERIODIC TABLE WHICH IS USEFUL IN AN AMALGAN DENUDER AND A PROCESS FOR THE PREPARATION AND USE OF THE SAID IMPREGNATED GRAPHITE.
Inventors
- 👤 G Bianchi
- 👤 A Nidola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:06
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/36; C25B1/42; C25B1/44; B; B01; B01J; B01J23/00; B01J23/38; B01J23/70; B01J23/74; B01J23/76; B01J23/84; B01J23/85; B01J23/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |