US2783237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-dialkylaminoalkylene bis-polycyclic ammonium salts
Assignee: Irwin Neisler and Co
•
Filing: 1953-10-12
•
Granted: 1957-02-26
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Cavallito Chester John
- 👤 Gray Allan Poe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:01
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; F; F16; F16H; F16H37/00; F16H37/12; F16H37/122; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
2 words
HEXAMETHYLENE BIS-(9-FLUORENYLPIPERIDINIUM)DIBROMIDE.
Claim 4
Dependent Claim
2 words
HEXAMETHYLENE BIS-(9-FLUORENYLPIPERIDINIUM)DIBROMIDE.
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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |