US3156732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telomers from tetrafluoroethylene and secondary iodides
Assignee: Pennwalt Corp
•
Filing: 1961-01-16
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Granted: 1964-11-10
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Braid Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:55
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD FOR PREPARING TELOMERS OF TETRAFLUOROETHYLENE WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH A SECONDARY IODIDE OF THE FORMULA
Claim 2
Independent Claim
18 words
A METHOD FOR PREPARING TELOMERS OF TETRAFLUOROETHYLENE WHICH COMPRISES REACTING TETRAFLUOROETHYLENE WITH A SECONDARY IODIDE OF THE FORMULA
References Cited (Backward Citations)
GB774103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |