Patent US3540867A successfully refreshed from Google Patents.
US3540867A
Expired / Lapsed
US
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Production of carbon monoxide and hydrogen
Assignee: GEA Group AG
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Filing: 1967-05-10
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Granted: 1970-11-17
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Expires: 1987-05-10
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Baron
- 👤 Ernst Kapp
- 👤 Heribert Dernbach
- 👤 Franz Bieger
- 👤 Rudolf Kohlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:04
CPC Classifications
C; C10; C10J; C10J1/00; C10J1/207; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C10B; C10B49/00; C10B49/02; C10K; C10K3/00; C10K3/02
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |