US2930447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption process
Assignee: Union Carbide Corp
•
Filing: 1955-07-29
•
Granted: 1960-03-29
•
Expires: 1975-07-29
Abstract
No abstract record available.
Inventors
- 👤 Richard M Barrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:38
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE RESOLUTION OF A MIXTURE OF OXYGEN AND NITROGEN BY PREFERENTIAL ADSORPTION OF OXYGEN ON DEHYDRATED CHABAZITE WHICH COMPRISES PROVIDING A QUANTITY OF DEHYDRATED CHABAZITE, ABSORBING ON SAID CHABAZITE AMMONIA IN AN AMOUNT LESS THAN THE CAPACITY OF SAID CHABAZITE FOR AMMONIA TO INCREASE THE RELATIVE CAPACITY OF SAID CHABAZITE FOR OXYGEN, AND THEREAFTER CONTACTING SAID MIXTURE WITH SAID MODIFIED CHABAZITE AND SELECTIVELY ADSORBING ON SAID CHABAZITE THE OXYGEN IN SAID MIXTURE.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE RESOLUTION OF A MIXTURE OF OXYGEN AND NITROGEN BY PREFERENTIAL ADSORPTION OF OXYGEN ON DEHYDRATED CHABAZITE WHICH COMPRISES PROVIDING A QUANTITY OF DEHYDRATED CHABAZITE, ABSORBING ON SAID CHABAZITE AMMONIA IN AN AMOUNT LESS THAN THE CAPACITY OF SAID CHABAZITE FOR AMMONIA TO INCREASE THE RELATIVE CAPACITY OF SAID CHABAZITE FOR OXYGEN, AND THEREAFTER CONTACTING SAID MIXTURE WITH SAID MODIFIED CHABAZITE AND SELECTIVELY ADSORBING ON SAID CHABAZITE THE OXYGEN IN SAID MIXTURE.
References Cited (Backward Citations)
US1443220A
Cited
US2254799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |