US3355859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective adsorption of gases at low temperature
Assignee: Linde GmbH
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Filing: 1964-02-13
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Granted: 1967-12-05
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Karwat Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:04
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/104; B01D2253/106; B01D2253/108; B01D2256/00; B01D2256/12; B01D2256/16; B01D2257/00; B01D2257/10; B01D2257/102; B01D2257/70; B01D2257/702; B01D2257/7022; B01D53/0407; B01D53/0438; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR PRODUCING AN OXYGEN ENRICHED STREAM FROM AIR, THE STEPS OF: COOLING A STREAM OF AIR TO A TEMPERATURE OF -60*C. TO -100*C. BY CONTACT WITH THE SURFACE OF A REGENERATOR THEREBY DEPOSITING WATER AND REDUCING THE WATER CONTENT OF THE AIR TO LESS THAN 20/P MILLIGRAMS PER STANDARD CUBIC METER (0*C. AND 1 ATMOSPHERE) WHERE P REPRESENTS THE TOTAL ABSOLUTE PRESSURE OF THE GASEOUS MIXTURE IN KG./CM.2, AND PASSING THE COOLED DRY AIR STREAM AT A TEMPERATURE OF FROM -60*C. TO -100*C. INTO CONTACT WITH A SOLID ADSORBENT SELECTIVE FOR NITROGEN THEREBY SELECTIVELY REMOVING AT
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR PRODUCING AN OXYGEN ENRICHED STREAM FROM AIR, THE STEPS OF: COOLING A STREAM OF AIR TO A TEMPERATURE OF -60*C. TO -100*C. BY CONTACT WITH THE SURFACE OF A REGENERATOR THEREBY DEPOSITING WATER AND REDUCING THE WATER CONTENT OF THE AIR TO LESS THAN 20/P MILLIGRAMS PER STANDARD CUBIC METER (0*C. AND 1 ATMOSPHERE) WHERE P REPRESENTS THE TOTAL ABSOLUTE PRESSURE OF THE GASEOUS MIXTURE IN KG./CM.2, AND PASSING THE COOLED DRY AIR STREAM AT A TEMPERATURE OF FROM -60*C. TO -100*C. INTO CONTACT WITH A SOLID ADSORBENT SELECTIVE FOR NITROGEN THEREBY SELECTIVELY REMOVING AT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |