US3072583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable composition comprising a copolymer of tetrafluoroethylene and a perfluoro-alpha-olefin containing therein a fluoromethane and process for making same
Assignee: EIDP Inc
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Filing: 1959-12-18
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Granted: 1963-01-08
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Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Randa Stuart Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/147; C08J9/144; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10S; Y10S521/00; Y10S521/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A COMPOSITION OF MATTER SUITABLE FOR PREPARING FOAMED ARTICLES WHICH COMPRISES A MELT EXTRUDABLE COPOLYMER OF TETRAFLUOROETHYLENE AND A PERFLUORO-A-OLEFIN HAVING FROM 3 TO 9 CARBON ATOMS CONTAINING THEREIN A FLUOROMETHANE REPPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
35 words
A COMPOSITION OF MATTER SUITABLE FOR PREPARING FOAMED ARTICLES WHICH COMPRISES A MELT EXTRUDABLE COPOLYMER OF TETRAFLUOROETHYLENE AND A PERFLUORO-A-OLEFIN HAVING FROM 3 TO 9 CARBON ATOMS CONTAINING THEREIN A FLUOROMETHANE REPPRESENTED BY THE FORMULA:
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |