Patent US3527823A successfully refreshed from Google Patents.
US3527823A
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US
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Process for alkylation of aromatic compounds
Assignee: Universal Oil Products Co
•
Filing: 1969-07-16
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Granted: 1970-09-08
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Expires: 1989-07-16
Abstract
No abstract record available.
Inventors
- 👤 Edwin K Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:21
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/085; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3293315A
Cited
US3381049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |