US3425959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonpyrophoric raney-type catalysts by treatment with an oxidizing agent
Assignee: IFP Energies nouvelles
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Filing: 1965-06-14
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Granted: 1969-02-04
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Andre Haddad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:43
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/12; B01J25/00; B01J25/02; B01J33/00; B01J23/00; B01J23/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191464A
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CA461114A
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US1915473A
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US2166183A
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US2391283A
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US2677669A
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US3190839A
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US3235513A
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US3139408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |