US2647130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-(nu-tetradecyl)-nu-(3, 4-methylenedioxybenzyl)-nu, nu-dimethylammonium chloride and preparation thereof
Assignee: Winthrop Stearns Inc
•
Filing: 1951-11-20
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Granted: 1953-07-28
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Kwartler Charles Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:09
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/56; C07D317/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
N - (N - TETRADECYL) - N - (3,4 - METHYLENEDIOXYBENZYL) -N.N-DIMETHYLAMMONIUM CHLORIDE.
Claim 2
Dependent Claim
13 words
N - (N - TETRADECYL) - N - (3,4 - METHYLENEDIOXYBENZYL) -N.N-DIMETHYLAMMONIUM CHLORIDE.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |