US3053773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rejuvenating an exhaust purifier
Assignee: Oxy Catalyst Inc
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Filing: 1959-11-09
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Granted: 1962-09-11
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Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Willard R Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N13/1811; F01N13/1822; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2832; F01N3/30; F01N2330/00; F01N2330/08; F01N2450/00; F01N2470/00; F01N2470/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
THE METHOD OF REJUVENATING A CATALYTIC EXHAUST PURIFIER EMPLOYED WITH AN INTERNAL COMBUSTION ENGINE OPERATED ON LEADED GASOLINE AND CONTAINING A BED OF CATALYST PELLETS OF ACTIVATED METAL OXIDE IMPREGNATED WITH A CATALYTICALLY ACTIVE METAL COMPRISING: VIBRATING THE PURIFIER AND CONTAINED BED AT A FREQUENCY IN THE RANGE OF FROM ABOUT 60 TO ABOUT 9000 VIBRATIONS PER MINUTE WITH AN AMPLITUDE IN THE RANGE OF FROM ABOUT 1/1000" TO ABOUT 1/3" TO DISLODGE DUST AND PARTICLES OF LEAD COMPOUNDS FROM THE CATALYSTT AND INTERNAL STRUCTURAL PARTS OF THE PURIFIER, PASSING A FLUID THROUGH THE INTERIOR OF THE PURIFIER AND THROUGH THE BED OF CATALYST PELLETS DURING THE VIBRATION TO ENTRAIN THE SAID DUST AND PARTICLES AND EXHAUST THEM FROM THE PURIFIER, FLOWING INTO THE CATALYST BED A SOLUTION OF SALT OF THE METAL WITH WHICH THE METAL OXIDE IS IMPREGNATED AND SOAKING THE CATALYST PELLETS WITH SAID SOLUTION, AND DECOMPOSING THE SALT INTRODUCED TO THE CATALYST PELLETS BY THE SAID SOLUTION BY PASSING A REDUCING GAS AT A TEMPERATURE OF FROM ABOUT 400*F. TO JABOUT 100*F. THROUGH THE CATALYST BED IN THE PURIFIER.
Claim 2
Independent Claim
183 words
THE METHOD OF REJUVENATING A CATALYTIC EXHAUST PURIFIER EMPLOYED WITH AN INTERNAL COMBUSTION ENGINE OPERATED ON LEADED GASOLINE AND CONTAINING A BED OF CATALYST PELLETS OF ACTIVATED METAL OXIDE IMPREGNATED WITH A CATALYTICALLY ACTIVE METAL COMPRISING: VIBRATING THE PURIFIER AND CONTAINED BED AT A FREQUENCY IN THE RANGE OF FROM ABOUT 60 TO ABOUT 9000 VIBRATIONS PER MINUTE WITH AN AMPLITUDE IN THE RANGE OF FROM ABOUT 1/1000" TO ABOUT 1/3" TO DISLODGE DUST AND PARTICLES OF LEAD COMPOUNDS FROM THE CATALYSTT AND INTERNAL STRUCTURAL PARTS OF THE PURIFIER, PASSING A FLUID THROUGH THE INTERIOR OF THE PURIFIER AND THROUGH THE BED OF CATALYST PELLETS DURING THE VIBRATION TO ENTRAIN THE SAID DUST AND PARTICLES AND EXHAUST THEM FROM THE PURIFIER, FLOWING INTO THE CATALYST BED A SOLUTION OF SALT OF THE METAL WITH WHICH THE METAL OXIDE IS IMPREGNATED AND SOAKING THE CATALYST PELLETS WITH SAID SOLUTION, AND DECOMPOSING THE SALT INTRODUCED TO THE CATALYST PELLETS BY THE SAID SOLUTION BY PASSING A REDUCING GAS AT A TEMPERATURE OF FROM ABOUT 400*F. TO JABOUT 100*F. THROUGH THE CATALYST BED IN THE PURIFIER.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |