Patent US3402213A successfully refreshed from Google Patents.
US3402213A
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Alkylation process
Assignee: Universal Oil Products Co
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Filing: 1966-08-30
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Granted: 1968-09-17
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Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 Rosset Armand J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:30
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J37/26; C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/12; C07C2527/00; C07C2527/06; C07C2527/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2965686A
Cited
US3318821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |