US3684712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide absorbing chemical
Assignee: Scott Technologies Inc
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Filing: 1970-02-02
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Granted: 1972-08-15
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Expires: 1990-02-02
Abstract
Abstract A CARBON DIOXIDE ABSORPTION COMPOSITION HAVING CONTROLLED WATER SOLUBILITY CHARACTERISTICS AND CAUSTIC HAZARD SUITABLE FOR UTILIZATION IN MARINE AND SUBMARINE ENVIRONMENTS IS PROVIDED COMPRISING A BODY HAVING A CORE OF LITHIUM HYDROXIDE MONOHYDRATE AND AN OUTLET LAYER OF MAGNESIUM OXIDE, OR OTHER ALKALINE EARTH OXIDE, OR LITHIUM HYDROXIDE MONOHYDRATE MODIFIED ALKALINE EARTH OXIDE. THE MAGNESIUM OXIDE PERMITS PERMEATION BY CARBON DIOXIDE, BUT EXCLUDES WATER FROM THE CORE. IN ADDITION, THE MAGNESIUM OXIDE IS ACTIVATED BY LITHIUM HYDROXIDE AND THUS SERVES ITSELF TO EFFECTIVELY ABSORB CARBON DIOXIDE.
Inventors
- 👤 Robert M Bovard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/62; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02C; Y02C20/00; Y02C20/40
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |