US3535196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the formation of composite structures based on expanded polyurethane material welded to a covering layer
Assignee: Pirelli and C SpA
•
Filing: 1967-03-13
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Granted: 1970-10-20
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Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Cesare Laberinti
- 👤 Guido Paganelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; B; B32; B32B; B32B27/00; C08J2375/00; C08J2375/04; C08J2457/00; Y; Y10; Y10S; Y10S264/00; Y10S264/17; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3170832A
Cited
US3093525A
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US3205120A
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US3244571A
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US3354020A
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US3393119A
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US3411981A
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US3467607A
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US3486968A
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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) | 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 |