Patent US3350165A successfully refreshed from Google Patents.
US3350165A
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Method of removing sulphur dioxide from gases
Assignee: Nobel Bozel SA
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Filing: 1963-10-30
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Granted: 1967-10-31
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Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Henri G L Marcheguet
- 👤 Gandon Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:20
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/14; B01D53/1456; B01D53/1481; B01D53/1493; B01D53/507; C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR THE EXTRACTION OF SULPHUR DIOXIDE FROM GAS WHICH CONTAINS IT, WHICH COMPRISES CONTACTING THE GAS WITH AN AQUEOUS SOLUTION OF GLYOXYLIC ACID TO ABSORB SULPHUR DIOXIDE IN SAID AQUEOUS SOLUTION.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE EXTRACTION OF SULPHUR DIOXIDE FROM GAS WHICH CONTAINS IT, WHICH COMPRISES CONTACTING THE GAS WITH AN AQUEOUS SOLUTION OF GLYOXYLIC ACID TO ABSORB SULPHUR DIOXIDE IN SAID AQUEOUS SOLUTION.
References Cited (Backward Citations)
US2994585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |