Patent US3100140A successfully refreshed from Google Patents.
US3100140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic automotive exhaust converter
Assignee: Calumet and Hecla Inc
•
Filing: 1960-05-31
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Granted: 1963-08-06
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Paul R Ashley
- 👤 David D Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2846; F01N2330/00; F01N2330/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A CATALYTIC EXHAUST GAS CONVERTER COMPRISING A CASING HAVING A CHAMBER THEREIN EXTENDING LONGITUDINALLY A SUBSTANTIAL DISTANCE IN A DIRECTION FROM AN INLET END TO AN
Claim 2
Dependent Claim
26 words
A CATALYTIC EXHAUST GAS CONVERTER COMPRISING A CASING HAVING A CHAMBER THEREIN EXTENDING LONGITUDINALLY A SUBSTANTIAL DISTANCE IN A DIRECTION FROM AN INLET END TO AN
References Cited (Backward Citations)
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US2361691A
Cited
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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) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |