US3477982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flame proofing polyepoxide and resulting products
Assignee: Shell USA Inc
•
Filing: 1967-04-14
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Granted: 1969-11-11
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Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Tette J Dijkstra
- 👤 Edward J W Vogelzang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/68; C; C08; C08K; C08K3/00; C08K3/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1173641B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |