US2672849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis gas generator
Assignee: Hydrocarbon Research Inc
•
Filing: 1949-12-16
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Granted: 1954-03-23
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Allen J Fruit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/32; C01B3/34; C01B3/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US443122A
Cited
US447916A
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US333691A
Cited
US721310A
Cited
US1757232A
Cited
US1781764A
Cited
US1802413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |