US3535198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural laminate having a foamed core and two rigid faces
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-11-14
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Granted: 1970-10-20
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Expires: 1987-11-14
Abstract
No abstract record available.
Inventors
- 👤 Martin S Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; E04C2/26; E04C2/284; E04C2/296; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1026; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999; Y10T428/249991; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |