US3454555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-soluble halogen-containing polyamines and polyethyleneimines
Assignee: Shell USA Inc
•
Filing: 1965-12-06
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Granted: 1969-07-08
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Henricus G P Van Der Voort
- 👤 Willem P De Jong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:24
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/54; C07; C07C; C07C209/00; C07C209/04; C07C209/06; C07C209/08; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08G; C08G69/00; C08G69/46; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C10M2207/00; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |