US2964510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butene-1 polymerization
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-04-09
•
Granted: 1960-12-13
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Charles W Seelbach
- 👤 Lawrence T Eby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:43
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2439528A
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BE540459A
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US2721189A
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US2885389A
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US2862917A
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US2824090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |