Patent US2439377A successfully refreshed from Google Patents.
US2439377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilization of tall oil
Assignee: —
•
Filing: —
•
Granted: 1948-04-13
•
Expires: 1965-04-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:40
CPC Classifications
C; C08; C08L; C08L91/00; C08L91/005; C08L21/00; C08L93/00; C08L93/04; Y; Y10; Y10S; Y10S524/00; Y10S524/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1716623A
Cited
US1938532A
Cited
US2072151A
Cited
US1985200A
Cited
US1927540A
Cited
DE563547C
Cited
US2111992A
Cited
US2298078A
Cited
US2271804A
Cited
US2306352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |