US2759019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoro amine compounds and quaternary derivatives
Assignee: 3M Co
•
Filing: 1954-08-09
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Granted: 1956-08-14
•
Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Harvey A Brown
- 👤 Arthur H Ahlbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/04; C10M2219/044; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/905; Y10S516/909; Y10S516/91; Y10S516/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE NEW AND USEFUL FLUOROCARBON COMPOUNDS OF THE CLASS CONSISTING OF THE PERFLUOROALKANE-SULFONAMIDOPOLYMETHYLENE-DIALKYLAMINE COMPOUNDS REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
18 words
THE NEW AND USEFUL FLUOROCARBON COMPOUNDS OF THE CLASS CONSISTING OF THE PERFLUOROALKANE-SULFONAMIDOPOLYMETHYLENE-DIALKYLAMINE COMPOUNDS REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2403207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |