Patent US3578487A successfully refreshed from Google Patents.
US3578487A
Expired / Lapsed
US
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Method for rendering substrates soil repellent
Assignee: Novartis Corp
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Filing: 1968-07-01
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Granted: 1971-05-11
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Expires: 1988-07-01
Abstract
Abstract SUBSTRATES, PARTICULARLY TEXTILES, ARE RENDERED SOIL, OIL AND WATER REPELLENT BY THE APPLICATION THERETO OF COMPOSITIONS COMPRISING POLYMERS OF N-(PERFLUOROALKANOYL) AMINOETHYL ACRYLATE OR N-(PERFLUOROALKANOVL)-N-LOWER ALKYL-AMINOETHYL ACRYLATES.
Inventors
- 👤 Martin Knell
- 👤 Eduard Karl Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:44
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/20; Y10T442/2262; Y10T442/227
Claims Analysis
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |