US3592802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of tetrafluoroethylene
Assignee: Phillips Petroleum Co
•
Filing: 1968-11-25
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Granted: 1971-07-13
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Expires: 1988-11-25
Abstract
Abstract TETRAFLUOROETHYLENE IS POLYMERIZED IN THE PRESENCE OF AT LEAST ONE DI(SATURATED HYDROCARBYL) PEROZYDICARBONATE WHEREIN THE SATURATED HYDROCARBYL RADICALS HAVE FROM 1 TO 4 CARBON ATOMS.
Inventors
- 👤 Lacey E Scoggins
- 👤 John E Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:27
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/26; Y; Y10; Y10S; Y10S526/00; Y10S526/908
Claims Analysis
Total Claims: 0
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |