Patent US3544590A successfully refreshed from Google Patents.
US3544590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic amines and the process for their formation
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1968-04-10
•
Granted: 1970-12-01
•
Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Allen R Kittleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:41
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; C07D207/00; C07D207/02; C07D207/04; C07D207/08; C07D207/09; C07D207/18; C07D207/20; C07D487/00; C07D487/02; C07D487/04; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10M; C10M133/00; C10M133/02; C10M133/38; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3246006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |