US3497416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealable polyether-urethane foam laminates
Assignee: Union Carbide Corp
•
Filing: 1965-09-16
•
Granted: 1970-02-24
•
Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Frank E Critchfield
- 👤 Robert D Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:30
CPC Classifications
B; B32; B32B; B32B27/00; C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8012; C08G18/8019; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T442/00; Y10T442/30; Y10T442/3325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2929800A
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US2843568A
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US3072582A
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US3049516A
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US3164572A
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US3131105A
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US3205120A
Cited
US3318744A
Cited
US3368932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |