Patent US3505784A successfully refreshed from Google Patents.
US3505784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrubbing process for removing carbon dioxide from low-sulfur fuel gases or synthesis gases
Assignee: GEA Group AG
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Filing: 1967-10-20
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Granted: 1970-04-14
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Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Hochgesand
- 👤 Hellmut Heidl
- 👤 Herbert Unland
- 👤 Alexander Doerges
- 👤 Karl Bratzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:22
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2826266A
Cited
US3001608A
Cited
US3193986A
Cited
US3324627A
Cited
US3225519A
Cited
US3331189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |