US3446609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification with water-containing feed
Assignee: Shell USA Inc
•
Filing: 1965-05-13
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Granted: 1969-05-27
•
Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Ernst F Reinmuth
- 👤 Leonard W Ter Haar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:08
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/322; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C10K; C10K1/00; C10K1/04; B; B01; B01J; B01J19/00; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097082A
Cited
US1644146A
Cited
US2665980A
Cited
US2999741A
Cited
US3232727A
Cited
US3147093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |