US3098710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali and sulfite recovery
Assignee: Stora Enso Oyj
•
Filing: 1959-07-16
•
Granted: 1963-07-23
•
Expires: 1979-07-16
Abstract
No abstract record available.
Inventors
- 👤 Nils Knut G Ahlborg
- 👤 Karl N Cederquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:02
CPC Classifications
C; C01; C01D; C01D5/00; C01D5/14; Y; Y10; Y10S; Y10S423/00; Y10S423/03
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |