US3575899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Launderably removeable,soil and stain resistant fabric treatment
Assignee: 3M Co
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Filing: 1969-07-28
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Granted: 1971-04-20
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Expires: 1989-07-28
Abstract
Abstract A NON-DURABLE TREATING COMPOSITION FOR FREQUENTLY LAUNDERED FABRICS WHICH RENDERS THE SURFACE OF FABRICS TREATED THEREWITH SOIL AND STAIN RESISTANT. THE TREATING COMPOSITION IS REMOVED FROM THE FABRIC SURFACE BY LAUNDERING. THE TREATING COMPOSITION COMPRISES AN AQUEOUS SUSPENSION OF A WATER INSOLUBLE FLUOROCARBON COMPOUND CONTAINING A HYDROPHOBIC AND OLEOPHOBIC PERFLUOROALKYL GROUP OF AT LEAST 3 CARBON ATOMS ADSORBED ON A WATER SOLUBLE ORGANIC FILM-FORMING FABRIC SIZING AGENT, SAID SUSPENSION HAVING A MAXIMUM SOLIDS CONTENT OF ABOUT 25 WEIGHT PERCENT. A METHOD OF TREATING FABRICS AND TREATED FABRICS ARE ALSO DISCLOSED.
Inventors
- 👤 Donald M Pryor
- 👤 Edward C Mccue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
D; D06; D06M; D06M23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |