US2916534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for carrying out endothermic reactions at high temperatures
Assignee: Knapsack AG
•
Filing: 1956-01-10
•
Granted: 1959-12-08
•
Expires: 1976-01-10
Abstract
No abstract record available.
Inventors
- 👤 Schallus Erich
- 👤 Gotz Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; B01J2219/00; B01J2219/08; B01J2219/0894; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/913; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2167471A
Cited
US2858261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |