US3539424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane film and laminate thereof
Assignee: Wharton Industries Inc
•
Filing: 1969-04-10
•
Granted: 1970-11-10
•
Expires: 1989-04-10
Abstract
No abstract record available.
Inventors
- 👤 Irving Tashlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:00
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; B; B32; B32B; B32B27/00; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/12; C08G18/28; C08G18/65; C08G18/66; C08G18/6603; C08G18/6607; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8012; C08G18/8019; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA469474A
Cited
US2593553A
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US3255061A
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US3328225A
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US3428609A
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US3410817A
Cited
US3483073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |