US2400521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization
Assignee: ExxonMobil Oil Corp
•
Filing: 1944-04-24
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Granted: 1946-05-21
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Expires: 1964-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl S Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/74; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-05-20 | 1949-11-19 | 1950-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-05-20 | 1953-11-19 | 1954-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-05-20 | 1957-11-19 | 1958-05-21 | $7700.00 | Window Closed / Lapsed |