US3552912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing sulfur dioxide, nitrogen dioxide and carbon dioxide from gases
Assignee: Corning Glass Works
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Filing: 1969-11-14
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Granted: 1971-01-05
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Expires: 1989-11-14
Abstract
Abstract METHOD OF REMOVING SULFUR DIOXIDE AND/OR NITROGEN DIOXIDE AND/OR CARBON DIOXIDE FROM GASEOUS MIXTURES COMPRISING CONTACTING SAID GASEOUS MIXTURE FIRST WITH A MOLTEN NITRATE SELECTED FROM THE GROUP CONSISTING OF SODIUM NITRATE, SOLVER NITRATE AND POTASSIUM NITRATE AND THEN WITH A MOLTEN HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE OR WITH A MOLTEN MIXTURE OF AT LEAST ONE OF SAID NITRATES AND HYDROXIDES.
Inventors
- 👤 Roger F Bartholomew
- 👤 Harmon M Garfinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:47
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/60; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |