US2739986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-pentadecyl-n-methyl-n',n'-dimethyl-ethylene diamine
Assignee: Nepera Chemical Co Inc
•
Filing: 1955-04-07
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Granted: 1956-03-27
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Expires: 1975-04-07
Abstract
No abstract record available.
Inventors
- 👤 John V Scudi
- 👤 Leon E Tenenbaum
- 👤 Godfrey F Grail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:05
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |