Patent US3646153A successfully refreshed from Google Patents.
US3646153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibers having improved soil and stain repellency
Assignee: Honeywell International Inc
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Filing: 1969-10-17
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Granted: 1972-02-29
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Expires: 1989-10-17
Abstract
Abstract THE SOIL AND STAIN REPELLENCY OF EXTRUDED FILAMENTS OF A SYNTHETIC RESIN CAN BE IMPROVED BY INCORPORATING IN THE RESIN A SMALL AMOUNT, ABOUT 1%, OF AN AMPHIPHATIC COMPOUND HAVING FROM ONE TO FOUR FLUOROALKYL GROUPS PENDENT FROM AN ORGAINC RADICAL. THE REPELLENCY IS PROVIDED BY THE FLUOROALKYL GROUPS, WHICH TEND TO BE CONCENTRATED AT THE SURFACE OF THE FIBER.
Inventors
- 👤 Bryce C Oxenrider
- 👤 Cyril Woolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/712; C08K; C08K5/00; C08K5/16; C08K5/20; C08K5/21; C08K5/34; C08K5/3467; C08K5/3477; C08L; C08L77/00; C08L77/02; C08L77/06
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |