US2956310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting of thin cellular resin sheets
Assignee: BB Chemical Co
•
Filing: 1957-06-05
•
Granted: 1960-10-18
•
Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Cyril W Roop
- 👤 Stephen E Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; C04B35/18; B; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29C44/32; B32; B32B; B32B27/00; C04B35/19; C04B35/622; C04B35/653; C04B35/657; C08; C08J; C08J9/00; C08J9/04; C08J9/06; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10S; Y10S264/00; Y10S264/14; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |