US3371050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Promoted catalyst for production of town gas at low temperatures
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-02-18
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Granted: 1968-02-27
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Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 William F Taylor
- 👤 John H Sinfelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:30
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |