Patent EP0072055A1 successfully refreshed from Google Patents.
US2445733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resins from methylene dioxolanes
Assignee: Bridgestone Firestone Inc
•
Filing: 1945-07-21
•
Granted: 1948-07-20
•
Expires: 1965-07-21
Abstract
No abstract record available.
Inventors
- 👤 Milton R Radcliffe
- 👤 William G Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:26
CPC Classifications
C; C08; C08F; C08F24/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2394862A
Cited
US2382640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |