US3545735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyance of dusty material in multistage fluidized-bed plant
Assignee: BASF SE
•
Filing: 1968-09-12
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Granted: 1970-12-08
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Expires: 1988-09-12
Abstract
No abstract record available.
Inventors
- 👤 Herbert Wolf
- 👤 Wilhelm Goesele
- 👤 Siegfried Schreiner
- 👤 Friedrich Hettler
- 👤 Hans Stumpfi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:12
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0035; B04; B04C; B04C5/00; B04C5/14; B04C5/15; B04C5/18; C; C22; C22B; C22B1/00; C22B1/02; C22B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |