US3518208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for the water gas shift reaction
Assignee: Girdler-Sudchemie Katalysator GmbH
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Filing: 1966-08-08
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Granted: 1970-06-30
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Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Michael R Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:28
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/80; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1680807A
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US1889672A
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US1809978A
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US1934795A
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US1959313A
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US2106597A
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US2418888A
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DE1020613B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |