US3252948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of the m-fluoroanilide of methacrylic acid
Assignee: Individual
•
Filing: 1960-08-19
•
Granted: 1966-05-24
•
Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Manecke Georg
- 👤 Singer Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:12
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; C08F8/00; C08F8/30; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/082; C12N11/087; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S530/00; Y10S530/81; Y10S530/812; Y10S530/815; Y10S530/816
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE POLYMER FORMED BY COPOLYMERIZING THE M-FLUOROANILIDE OF METHACRYLIC ACID AT A TEMPERATURE OF 20*C. TO 100*C. WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACYRLIC ACID AND DIVINYL BENZENE, AND NITRATING THE RESULTING COPOLYMER WITH A MIXTURE OF SULFURIC AND NITRIC ACIDS AT A TEMPERATURE BELOW 0*C. TO PRODUCE A POLYMER HAVING 2,4-DINITRO5-FLUORO-PHENYL GROUPS.
Claim 2
Dependent Claim
60 words
THE POLYMER FORMED BY COPOLYMERIZING THE M-FLUOROANILIDE OF METHACRYLIC ACID AT A TEMPERATURE OF 20*C. TO 100*C. WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACYRLIC ACID AND DIVINYL BENZENE, AND NITRATING THE RESULTING COPOLYMER WITH A MIXTURE OF SULFURIC AND NITRIC ACIDS AT A TEMPERATURE BELOW 0*C. TO PRODUCE A POLYMER HAVING 2,4-DINITRO5-FLUORO-PHENYL GROUPS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |