US2983720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of butene-1 with catalyst of titanium tetrachloride, aluminum triethyl, and diethyl aluminum chloride
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-04-09
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Granted: 1961-05-09
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert F Leary
- 👤 Lewis W Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
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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US2593417A
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US2838477A
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BE538782A
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US2839518A
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US2827446A
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US2904542A
Cited
US2906742A
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US2889314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |