US3474143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side chain alkylation of aromatic tertiary amines
Assignee: Sunoco Inc
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Filing: 1966-07-01
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Granted: 1969-10-21
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Expires: 1986-07-01
Abstract
No abstract record available.
Inventors
- 👤 Walter A Butte Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:05
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0237; B01J31/12; B01J31/122; C; C10; C10M; C10M1/00; C10M1/08; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26
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) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |