US2470130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caustic resistant etherified phenolformaldehyde resins
Assignee: Bakelite Corp
•
Filing: 1945-02-07
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Granted: 1949-05-17
•
Expires: 1965-02-07
Abstract
No abstract record available.
Inventors
- 👤 Howard L Bender
- 👤 Alford G Farnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:46
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US965823A
Cited
GB409397A
Cited
US2003291A
Cited
US2267842A
Cited
GB511511A
Cited
US2341062A
Cited
US2390198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |