Patent US3335546A successfully refreshed from Google Patents.
US3335546A
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Method for purifying protective gases
Assignee: Aichelin Industrieofenbau GmbH
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Filing: 1963-12-30
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Granted: 1967-08-15
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Wunning Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0423; B01D53/0438; B01D53/0454; C; C01; C01B; C01B21/00; C01B21/04; C01B21/0405; C01B21/0433; C01B21/045; C21; C21D; C21D1/00; C21D1/74; C21D1/76; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2257/00; B01D2257/30; B01D2257/50; B01D2257/504; B01D2257/80; B01D2258/00; B01D2258/02; B01D2258/025; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/40083; B01D2259/40086; B01D2259/40088; B01D2259/40096; B01D2259/403; B01D53/26; B01D53/261; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P20/00; Y02P20/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A PROCESS IN WHICH A GAS IS PURIFIED IN A COLUMN HAVING A BED OF ADSORPTIVE MATERIAL HAVING FIRST AND SECOND ENDS, THE GAS CONTAINING SUBSTANCES ABSORBABLE BY SAID ADSORPTIVE MATERIAL, SAID MATERIAL HAVING A VARYING AFFINITY FOR SAID SUBSTANCES AND THE GAS BEING INTRODUCED INTO THE COLUMN AT THE FIRST END OF THE BED AND REMOVED AT THE SECOND END, SO THAT THE SUBSTANCE OF GREATER AFFINITY IS ADSORBED NEAR THE FIRST END OF THE BED AND THE SUBSTANCE OF LESSER AFFINITY AT A MORE REMOTE POINT IN THE BED, THE REGENERATION OF SAID BED COMPRISING PROGRESSIVELY HEATING THE ADSORPTIVE MATERIAL FROM THE FIRST END TO THE SECOND END AND PASSING AN UNHEATED PURGE GAS THROUGH THE ADSORPTIVE MATERIAL FROM THE SECOND END TO THE FIRST END, SO THAT THE PORTION OF THE BED CONTAINING THE SUBSTANCE OF GREATER AFFINITY IS HEATED TO A SUFFICIENT TEMPERATURE TO EXPEL A PORTION OF THE SUBSTANCT OF GREATER AFFINITY BEFORE THE PORTION OF THE BED CONTAINING THE SUBSTANCE OF LESSER AFFINITY IS HEATED TO A SUFFICIENT DEGREE TO CAUSE SUBSTANTIAL REMOVAL OF THE SUBSTANCE OF LESSER AFFINITY AND
Claim 2
Dependent Claim
187 words
IN A PROCESS IN WHICH A GAS IS PURIFIED IN A COLUMN HAVING A BED OF ADSORPTIVE MATERIAL HAVING FIRST AND SECOND ENDS, THE GAS CONTAINING SUBSTANCES ABSORBABLE BY SAID ADSORPTIVE MATERIAL, SAID MATERIAL HAVING A VARYING AFFINITY FOR SAID SUBSTANCES AND THE GAS BEING INTRODUCED INTO THE COLUMN AT THE FIRST END OF THE BED AND REMOVED AT THE SECOND END, SO THAT THE SUBSTANCE OF GREATER AFFINITY IS ADSORBED NEAR THE FIRST END OF THE BED AND THE SUBSTANCE OF LESSER AFFINITY AT A MORE REMOTE POINT IN THE BED, THE REGENERATION OF SAID BED COMPRISING PROGRESSIVELY HEATING THE ADSORPTIVE MATERIAL FROM THE FIRST END TO THE SECOND END AND PASSING AN UNHEATED PURGE GAS THROUGH THE ADSORPTIVE MATERIAL FROM THE SECOND END TO THE FIRST END, SO THAT THE PORTION OF THE BED CONTAINING THE SUBSTANCE OF GREATER AFFINITY IS HEATED TO A SUFFICIENT TEMPERATURE TO EXPEL A PORTION OF THE SUBSTANCT OF GREATER AFFINITY BEFORE THE PORTION OF THE BED CONTAINING THE SUBSTANCE OF LESSER AFFINITY IS HEATED TO A SUFFICIENT DEGREE TO CAUSE SUBSTANTIAL REMOVAL OF THE SUBSTANCE OF LESSER AFFINITY AND
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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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |