US3072458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catalytically purifying exhaust gases of internal combustion engines and cyclically regenerating the lead-contaminated catalyst
Assignee: Universal Oil Products Co
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Filing: 1960-05-31
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Granted: 1963-01-08
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Ii William H Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/36; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F01N13/00; F01N13/009; F01N13/011; F01N3/18; F01N3/20; F01N3/206; F01N3/22; F01N2610/00; F01N2610/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
IN A PROCESS FOR THE CATALYTIC PURIFICATION OF LEADCONTAMINATED EXHAUST GASES EMANATING FROM AN INTERNAL COMBUSTION ENGINE USING LEADED FUEL INCLUDING THE STEPS
Claim 2
Dependent Claim
23 words
IN A PROCESS FOR THE CATALYTIC PURIFICATION OF LEADCONTAMINATED EXHAUST GASES EMANATING FROM AN INTERNAL COMBUSTION ENGINE USING LEADED FUEL INCLUDING THE STEPS
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |