US3818074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated esters
Assignee: 3M Co
•
Filing: 1973-04-20
•
Granted: 1974-06-18
•
Expires: 1993-04-20
Abstract
Abstract Unsaturated aliphatic acid esters of omega-perfluoroalkyl substituted alkanols having non-flammability, hydro- and oleophobic properties.
Inventors
- 👤 A Ahlbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:06
CPC Classifications
C; C07; C07C; C07C53/00; C07C53/15; C07C53/19; C07C53/21; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
2 words
3-(Perfluorooctyl)-propyl acrylate.
Claim 2
Dependent Claim
2 words
11-(Perfluorooctyl)-undecyl acrylate.
Claim 3
Dependent Claim
2 words
11(Perfluorooctyl)-undecyl methacrylate.
Claim 4
Dependent Claim
2 words
3-(Perfluoropropyl)-propyl methacrylate.
Claim 5
Dependent Claim
2 words
5-(Perfluorooctyl)-pentyl methacrylate.
References Cited (Backward Citations)
US3282905A
Cited
US3248260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |