Patent US2132481A successfully refreshed from Google Patents.
US2803615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon acrylate and methacrylate esters and polymers
Assignee: 3M Co
•
Filing: 1956-01-23
•
Granted: 1957-08-20
•
Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Ahlbrecht
- 👤 Harvey A Brown
- 👤 Smith Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:33
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C; C08; C08F; C08F28/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2189
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
31 words
FLUOROCARBON COMPOUNDS OF THE CLASS CONSISTING OF THE ACRYLATE ESTERS AND METHACRYLATE ESTERS OF N-ALKYL, N-ALKANOL PERFLIOROALKANESULFONAMIDES WHICH HAVE IN THE MOLECULE A PERFLUOROALKANESULFONAMIDES WHICH HAVE IN ESTERS HAVING THE FORMULA:
Claim 2
Dependent Claim
31 words
FLUOROCARBON COMPOUNDS OF THE CLASS CONSISTING OF THE ACRYLATE ESTERS AND METHACRYLATE ESTERS OF N-ALKYL, N-ALKANOL PERFLIOROALKANESULFONAMIDES WHICH HAVE IN THE MOLECULE A PERFLUOROALKANESULFONAMIDES WHICH HAVE IN ESTERS HAVING THE FORMULA:
Claim 3
Dependent Claim
14 words
STABLE AQUEOUS LATEX DISPERSIONS OF POLYMERS OF THE FLUOROCARBON ESTERS SPECIFIED IN CLAIM 1.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |