Patent JPS558949A successfully refreshed from Google Patents.
US3423328A
Expired / Lapsed
US
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Silver-barium catalyst
Assignee: BASF Catalysts LLC
•
Filing: 1965-11-22
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Granted: 1969-01-21
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Carl D Keith
- 👤 Saul G Hindin
- 👤 Ludwig A Galen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:59
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA592091A
Cited
US3125538A
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GB466416A
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GB514792A
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US2752362A
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US2709173A
Cited
US2825701A
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US2920052A
Cited
US3033800A
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US3317439A
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US3172893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |