Patent US3456034A successfully refreshed from Google Patents.
US3456034A
Expired / Lapsed
US
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Ethylene alkylation with aluminum fluoride supported on silica-alumina gel
Assignee: Sinclair Research Inc
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Filing: 1965-10-29
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Granted: 1969-07-15
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Expires: 1985-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanford
- 👤 Frank J Chloupek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:06
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; C07C2521/00; C07C2521/12; C07C2527/00; C07C2527/06; C07C2527/125
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |