US2449180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of phenol-rubber and resorcinol-formaldehyde
Assignee: EIDP Inc
•
Filing: 1945-06-21
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Granted: 1948-09-14
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Expires: 1965-06-21
Abstract
No abstract record available.
Inventors
- 👤 Herman E Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:04
CPC Classifications
C; C08; C08L; C08L15/00; C08C; C08C19/00; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C09J161/12; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08; C08L29/00; C08L29/02; C08L29/04; C08L61/00; C08L61/04; C08L61/06; C08L61/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970835A
Cited
US2072508A
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US2128635A
Cited
US2343551A
Cited
US2296427A
Cited
US2345597A
Cited
US2300367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |