US3450562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic materials coated with an organic polycarbodiimide
Assignee: EIDP Inc
•
Filing: 1965-06-18
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Granted: 1969-06-17
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Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Guenther Kurt Hoeschele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/30; C; C08; C08G; C08G18/00; C08G18/02; C08G18/025; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31721
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2941966A
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US2941983A
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US2955095A
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US2987494A
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US3226368A
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US3152131A
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US3157662A
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US3178310A
Cited
US3282897A
Cited
US3282898A
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US3345342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |