US3221476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption-desorption method
Assignee: Chemical Design Inc
•
Filing: 1961-12-07
•
Granted: 1965-12-07
•
Expires: 1981-12-07
Abstract
No abstract record available.
Inventors
- 👤 James R Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:35
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D53/0476; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2253/30; B01D2253/302; B01D2253/308; B01D2256/00; B01D2256/16; B01D2257/00; B01D2257/50; B01D2257/502; B01D2257/504; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2257/7025; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40013; B01D2259/40015; B01D2259/40028; B01D2259/4003; B01D2259/40058; B01D2259/40066; B01D2259/40077; B01D2259/40081; B01D2259/402; B01D53/26; B01D53/261; Y; Y02; Y02C; Y02C20/00; Y02C20/20; Y02C20/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
164 words
THE METHOD OF REACTIVATING THE ADSORBENT IN AN ADSORBENT TOWER, THROUGH WHICH A FEED GAS STREAM FLOWS UNDER PRESSURE FROM A FEED GAS SUPPLY LINE, WITH NO SUBSTANTIAL LOSS OF GAS WHICH COMPRISES CUTTING OFF THE SUPPLY OF FEED GAS TO AND THE DISCHARGE OF FEED GAS EFFLUENT GAS FROM THE TOWER, PARTIALLY DEPRESSURIZING THE TOWER BY REMOVING A PORTION OF THE GAS THEREIN, STORING THE REMOVED GAS, REDUCING THE PRESSURE IN THE TOER SUBSTANTIALLY TO ATMOSPHERIC BY REMOVING ADDITIONAL GAS THEREFROM AND RETURNING SAID ADDITIONAL GAS TO THE FEED GAS SUPPLY LINE, APPLYING A VACUUM TO THE TOWER, FLOWING A POURGE GAS THROUGH THE TOWER IN A REVERSE DIRECTION OF THE FLOW OF FEED GAS TO DESORB CONTAMINANTS FROM THE ADSORBENT, DISCONNECTING THE VACUUM AND THE FLOWING PURGE GAS, RETURNING THE STORED GAS TO THE TOWER TO PARTIALLY REPRESSURIZE IT, AND CONNECTING THE TOWER TO FEED GAS EFFLUENT TO RAISE THE PRESSURE OF THE TOWER TO THE PRESSURE OF THE FEED GAS STREAM.
References Cited (Backward Citations)
US3103425A
Cited
US1680840A
Cited
US1896816A
Cited
US2254799A
Cited
US2359660A
Cited
US2882243A
Cited
US2882244A
Cited
GB860311A
Cited
US2944627A
Cited
US2992703A
Cited
US3037338A
Cited
US3150942A
Cited
US3078639A
Cited
US3078635A
Cited
US3085379A
Cited
US3011589A
Cited
US3101261A
Cited
US3104162A
Cited
US3111387A
Cited
US3102003A
Cited
US3141748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |