Patent US3492083A successfully refreshed from Google Patents.
US3492083A
Expired / Lapsed
US
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Process for the removal of sulphur from industrial gases and to apparatus for use in such a process
Assignee: Grillo Werke AG
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Filing: 1966-02-08
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Granted: 1970-01-27
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Expires: 1986-02-08
Abstract
No abstract record available.
Inventors
- 👤 Norbert Lowicki
- 👤 Dietrich Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:33
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1895601A
Cited
US2037789A
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US2551905A
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US2824047A
Cited
GB871076A
Cited
US2992884A
Cited
GB1009191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |