US3597165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic exhaust purifier
Assignee: Engelhard Minerals and Chemicals Corp
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Filing: 1969-06-18
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Granted: 1971-08-03
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Expires: 1989-06-18
Abstract
Abstract A CATALYTIC PURIFIER FOR THE TREATMENT OF INTERNAL COMBUSTION ENGINE EXHAUSTS, DESIGNED TO ELIMINATE EXTERNAL MANIFOLDING TO SEPARATELY HOUSED CATALYST BODIES, HAS A CATALYST SUPPORT EQUIPPED FOR HOUSING A PLURALITY OF CERAMIC CATALYST BLOCKS. IT IS PARTICULARLY USEFUL FOR PURIFY- ING EXHAUSTS OF LARGE DISPLACEMENT ENGINES, E.G., THOSE EXCEEDING 400 IN.3/CYCLE.
Inventors
- 👤 Carl D Keith
- 👤 John J Mooney
- 👤 Kenneth W Blamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:32
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F01N13/00; F01N13/011; F01N3/02; F01N3/021; F01N3/023; F01N3/2803; F01N3/2825; F01N3/2828; F01N2330/00; F01N2330/06; F01N2350/00; F01N2350/02; F01N2350/06; F01N2390/00; F01N2390/06; F01N2450/00; F01N2450/30; Y; Y10; Y10S; Y10S55/00; Y10S55/30; Y10S55/31; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |