US3453084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cracking and burning hydrocarbons
Assignee: Air Liquide SA
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Filing: 1966-04-18
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Granted: 1969-07-01
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Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Alix Ivernel
- 👤 Marcel Just
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:58
CPC Classifications
F; F23; F23C; F23C6/00; F23C6/04; F23C6/045; F23C6/047; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C07; C07C; C07C4/00; C07C4/02; C07C4/025; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38; F23C2201/00; F23C2201/20; F23C2201/30; F23C2201/301; F23D; F23D2900/00; F23D2900/00004
Claims Analysis
Total Claims: 0
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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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |