US3770389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic converter with electrically resistive catalyst support
Assignee: Ford Motor Co
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Filing: 1971-11-11
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Granted: 1973-11-06
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Expires: 1991-11-11
Abstract
Abstract A corrugated stainless steel sheet and a flat stainless steel sheet are sandwiched together and wound spirally so the corrugations form a plurality of small gas flow passages connecting the converter inlet with the converter outlet. Alumina coatings on the sheets electrically insulate the sheets from each other and a finely divided catalyst is distributed on the alumina coatings. Electrical energy flows through the sheets to heat the catalyst to operating temperature.
Inventors
- 👤 E Kitzner
- 👤 A Rhodes
- 👤 M Shachter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:17
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/2006; F01N3/2013; F01N3/2026; F01N13/00; F01N13/011; F01N13/017; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2825; F01N3/2828; F01N2330/00; F01N2330/02; F01N2330/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
39 words
The catalytic converter as defined in claim 1 in which the corrugated metal sheet and the flat metal sheet are formed of stainless steel and the thin coating of electrical insulating material on said sheets is formed of aluminum.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |