Patent US3514418A successfully refreshed from Google Patents.
US3514418A
Expired / Lapsed
US
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Epoxy ethers,their preparation and cured products obtained therefrom
Assignee: Shell USA Inc
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Filing: 1968-07-05
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Granted: 1970-05-26
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Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 Carl G Schwarzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:24
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3218; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G59/22; C08G59/24; C08G59/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2844553A
Cited
US2765288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |