US2962484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of fluorodienes and styrene
Assignee: 3M Co
•
Filing: 1959-12-07
•
Granted: 1960-11-29
•
Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Francis J Honn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:41
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS WHICH COMPRISES COPOLYMERIZING AT A TEMPERATURE BETWEEN ABOUT 0*C. AND ABOUT 100*C. A MIXTURE OF BETWEEN ABOUT 5 AND 95 MOL PERCENT OF STYRENE AND BETWEEN ABOUT 95 AND 5 MOL PERCENT OF A FLUORINATED BUTADIENE SELECTED FROM THE GROUP CONSISTING OF 1,1,2,4,4PENTAFLUOROBUTADIENE AND 1,1,2,4,4-PENTAFLUORO-3-METHYL BUTADIENE, SAID MIXTURE BEING IN CONTACT WITH A FREE RADICAL FORMING POLYMERIZATION PROMOTER.
Claim 2
Dependent Claim
60 words
A PROCESS WHICH COMPRISES COPOLYMERIZING AT A TEMPERATURE BETWEEN ABOUT 0*C. AND ABOUT 100*C. A MIXTURE OF BETWEEN ABOUT 5 AND 95 MOL PERCENT OF STYRENE AND BETWEEN ABOUT 95 AND 5 MOL PERCENT OF A FLUORINATED BUTADIENE SELECTED FROM THE GROUP CONSISTING OF 1,1,2,4,4PENTAFLUOROBUTADIENE AND 1,1,2,4,4-PENTAFLUORO-3-METHYL BUTADIENE, SAID MIXTURE BEING IN CONTACT WITH A FREE RADICAL FORMING POLYMERIZATION PROMOTER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |