Patent US3551809A successfully refreshed from Google Patents.
Patent US3598633A successfully refreshed from Google Patents.
US3598633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for imparting soil release properties to fibrous substrates
Assignee: Individual
•
Filing: 1968-08-02
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Granted: 1971-08-10
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Expires: 1988-08-02
Abstract
Abstract SUBSTRATES, PARTICULARLY SYNTHETIC FABRICS, ARE TREATED TO IMPART SOIL RELEASE PROPERTIES THERETO. A URETHANE ELASTOMER IS APPLIED TO A SUBSTRATE AND DRIED. THE DRIED SUBSTRTAE IS THEN TREATED WITH A HIGH MOLECULAR WEIGHT SILICON POLYMER SYSTEM AND THE TREATED MATERIAL SUBSEQUENTLY CURED. THE URETHANE AND SILICON SYSTEMS MAY BE WATER OR ORGANIC SOLVENT BASED. THE SYSTEMS ARE APPLIED TO A SELECTED SUBSTRATE BY CONVENTIONAL MEANS SUCH AS PADDING, KNIFE OVER ROLL COATING, ETC.
Inventors
- 👤 Joseph T Rudman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6436; D06M15/564; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2221; Y10T442/2246; Y10T442/2279
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |