US3485593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust treating device
Assignee: Ethyl Corp
•
Filing: 1967-06-09
•
Granted: 1969-12-23
•
Expires: 1987-06-09
Abstract
No abstract record available.
Inventors
- 👤 Denis L Lenane
- 👤 Raymond G Lyben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/033; F01N3/0335; F01N3/037; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2832; F01N3/2839; F01N3/2846; F01N3/2882; F01N2230/00; F01N2230/02; F01N2230/04; F01N2250/00; F01N2250/02; F01N2250/08; F01N2330/00; F01N2330/08; F01N2330/12; F01N2470/00; F01N2470/18; F01N2510/00; F01N2510/06; F01N2570/00; F01N2570/02; F01N3/30; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/25; Y10S55/30
Claims Analysis
Total Claims: 0
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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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |