US2544076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of di-and tri-(dialkylaminoalkoxy)-benzenes
Assignee: Rhone Poulenc SA
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Filing: 1948-06-21
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Granted: 1951-03-06
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Expires: 1968-06-21
Abstract
No abstract record available.
Inventors
- 👤 Fourneau Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A QUATERNARY LOWER ALKYL IODIDE OF A COMPOUND CONTAINING A BENZENE NUCLEUS SUBSTITUTED SOLELY BY A NUMBER GREATER THAN ONE AND LESS THAN FOUR OF SUBSTITUENTS GROUPS EACH OF WHICH IS A DI-LOWER-ALKYL AMINOALKOXY GROUP.
Claim 2
Dependent Claim
35 words
A QUATERNARY LOWER ALKYL IODIDE OF A COMPOUND CONTAINING A BENZENE NUCLEUS SUBSTITUTED SOLELY BY A NUMBER GREATER THAN ONE AND LESS THAN FOUR OF SUBSTITUENTS GROUPS EACH OF WHICH IS A DI-LOWER-ALKYL AMINOALKOXY GROUP.
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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |