US2409247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: ExxonMobil Oil Corp
•
Filing: 1943-12-30
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Granted: 1946-10-15
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Expires: 1963-12-30
Abstract
No abstract record available.
Inventors
- 👤 John W Brooks
- 👤 Arlie A O'kelly
- 👤 Robert H Work
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:31
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/14; C07C2527/16
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) | 1949-10-14 | 1950-04-15 | 1950-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-14 | 1954-04-15 | 1954-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-14 | 1958-04-15 | 1958-10-15 | $7700.00 | Window Closed / Lapsed |