US3271430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nu-perfluoroacyl polyalkylenimines
Assignee: Dow Chemical Co
•
Filing: 1963-02-07
•
Granted: 1966-09-06
•
Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 Fred N Teumac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:02
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
AN N-PERFLUOROACYL POLYALKYLENIMINE WHEREIN PERFLUOROACYL IS THE RESIDUE OF A PERFLUORINATED ALKANOIC ACID OF 2 TO ABOUT 12 CARBON ATOMS AND THERE ARE PRESENT IN THE PERFLUOROACYL POLYALKYLENIMINE MOLECULE FROM ABOUT 10 TO ABOUT 100 ALKYLENIMINE UNITS FOR EACH PERFLUOROACYL GROUP, EACH ALKENYLENIMINE UNIT CONTAINING FROM 2-4 CARBON ATOMS.
Claim 2
Dependent Claim
49 words
AN N-PERFLUOROACYL POLYALKYLENIMINE WHEREIN PERFLUOROACYL IS THE RESIDUE OF A PERFLUORINATED ALKANOIC ACID OF 2 TO ABOUT 12 CARBON ATOMS AND THERE ARE PRESENT IN THE PERFLUOROACYL POLYALKYLENIMINE MOLECULE FROM ABOUT 10 TO ABOUT 100 ALKYLENIMINE UNITS FOR EACH PERFLUOROACYL GROUP, EACH ALKENYLENIMINE UNIT CONTAINING FROM 2-4 CARBON ATOMS.
References Cited (Backward Citations)
US2382185A
Cited
US2764603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |