US2447367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction product of rosin-polyhydric alcohol esters and process of making same
Assignee: Ellis Foster Co
•
Filing: 1944-10-07
•
Granted: 1948-08-17
•
Expires: 1964-10-07
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 William B Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |