US3758447A
Expired / Lapsed
US
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Transfer agents free radical polymerization using perfluoroalkyl mercaptans as chain
Assignee: Novartis Corp
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Filing: 1971-11-17
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Granted: 1973-09-11
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Expires: 1991-11-17
Abstract
Abstract POLYMERS HAVING LOW FREE SURFACE ENERGIES ARE DERIVED FROM MONOMERS WHICH ARE CAPABLE OF FREE RADICAL POLYMERIZATION AND NOVEL PERFLUOROALKYL MERCAPTANS WHICH ACT AS CHAIN TRANSFER AGENTS.
Inventors
- 👤 R Falk
- 👤 E Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:01
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252; C; C07; C07C; C07C323/00; C08; C08F; C08F2/00; C08F2/38; C08F4/00; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172; Y10T442/2279; Y10T442/2287
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |