US2912126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressurizing hot pulverized coal
Assignee: Union Carbide Corp
•
Filing: 1953-11-16
•
Granted: 1959-11-10
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Paul L Alspaugh
- 👤 Robert G Keister
- 👤 Richard C Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/50; C10J3/005; C10J3/72; C10J3/78; C10J2200/00; C10J2200/15; C10J2200/154; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0953; C10J2300/0956; C10J2300/0973; C10J2300/0976
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US512958A
Cited
US960857A
Cited
US1971716A
Cited
US2517042A
Cited
US2613832A
Cited
US2683657A
Cited
US2529583A
Cited
US2571277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |