US2786280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of contacting solid particles with fluids
Assignee: National Research Council Canada
•
Filing: 1954-03-12
•
Granted: 1957-03-26
•
Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Gishler Paul Ernest
- 👤 Kishan B Mathur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:14
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/90; A23B2/95; A23B9/00; A23B9/08; F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B3/092; F26B3/0926; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US83255A
Cited
US1094452A
Cited
US1648005A
Cited
US1869949A
Cited
US1766030A
Cited
US1703654A
Cited
US2435927A
Cited
US2437694A
Cited
US2478912A
Cited
US2513370A
Cited
US2550722A
Cited
US2689973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |