US3414247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis gas quencher
Assignee: Chemical Construction Corp
•
Filing: 1966-06-07
•
Granted: 1968-12-03
•
Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 Saverio A Sama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/06; F28D; F28D21/00; F28D2021/0019; F28D2021/0075; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |