US2596241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of the spent cooking liquor of an ammonia base sulfite pulping process
Assignee: Price Brothers and Co Ltd
•
Filing: 1948-12-20
•
Granted: 1952-05-13
•
Expires: 1968-12-20
Abstract
No abstract record available.
Inventors
- 👤 Helleur Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:58
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/02; D21C11/0085; D21C11/0092; Y; Y10; Y10S; Y10S423/00; Y10S423/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US932130A
Cited
US1100519A
Cited
US1904170A
Cited
US1795754A
Cited
US1780842A
Cited
US1891337A
Cited
US1943345A
Cited
US1926002A
Cited
US1885764A
Cited
US2014374A
Cited
US2032437A
Cited
US2320294A
Cited
US2385955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |