US3324632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for concentrating residual pulp liquor by direct contact with flue gases
Assignee: Combustion Engineering Inc
•
Filing: 1965-12-07
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Granted: 1967-06-13
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Expires: 1985-12-07
Abstract
No abstract record available.
Inventors
- 👤 Richard H Berneike
- 👤 Arthur C Firl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:08
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/0094; B01D1/14; B01D1/22
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |