US3729902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide sorbent for confined breathing atmospheres
Assignee: Individual
•
Filing: 1971-04-21
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Granted: 1973-05-01
•
Expires: 1991-04-21
Abstract
Abstract An apparatus for removing CO2 from air by passing said air through sorbent material made by treating molecular sieve-type zeolite with aqueous solution of any alkali carbonate. The sorbent material may be regenerated repeatedly by passing either heated air or superheated steam therethrough.
Inventors
- 👤 F Ventriglio
- 👤 D Zall
- 👤 C Stockhausen
- 👤 D Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:19
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/34; B01D53/46; B01D53/62; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2257/00; B01D2257/50; B01D2257/504; B01D2259/00; B01D2259/40; B01D2259/403; B01D2259/45; B01D2259/4566; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A gas purification system for removing carbon dioxide from a gas mixture as set forth in claim 1 wherein: said means for supplying said gas mixture includes a heat exchanger; and further includes means connecting said sorption column to said heat exchanger for passing the purified sorption column effluent through said heat exchanger to thereby heat said gas mixture prior to entering said sorption column.
Claim 2
Dependent Claim
85 words
A gas purification system for removing carbon dioxide from a gas mixture as set forth in claim 2 further comprising: a blower connected to said heat exchanger for forcing said gas mixture through said heat exchanger and said sorption column; and a condenser connected to the regeneration effluent output of said sorption column for condensing said effluent and providing liquid water and free carbon dioxide; and the output of said condenser being connected to said steam generator for supplying liquid water to said steam generator.
References Cited (Backward Citations)
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Cited
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Cited
US3085379A
Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |