US2933767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved method of post compressing a carbamide resin foam
Assignee: COGEPA COMMERCIAL Ets
•
Filing: 1954-09-21
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Granted: 1960-04-26
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Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 Otto A Vieli
- 👤 Klenk Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:54
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117179A
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US1904268A
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US1978041A
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US2161308A
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US2336944A
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US2327001A
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FR905731A
Cited
US2384387A
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US2659935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |