US2944292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for pre-expanding expandable granules of a synthetic thermoplastic material
Assignee: Isoleringsaktiebolaget Wmb
•
Filing: 1956-04-04
•
Granted: 1960-07-12
•
Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Norrhede Lars Sten Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:47
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3461; Y; Y10; Y10S; Y10S264/00; Y10S264/09; Y10S425/00; Y10S425/101; 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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |