US3518220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered heat-curable epoxy resin compositions of (1) an adduct of a polyepoxide and an aromatic amine and (2) 3-aminopyridine
Assignee: Shell USA Inc
•
Filing: 1966-12-27
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Granted: 1970-06-30
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Alton J Landua
- 👤 William L Lantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:14
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/10; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/506; Y; Y10; Y10S; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3362922A
Cited
US3409590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |