US3743534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for softening fabrics in a dryer
Assignee: Procter and Gamble Co
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Filing: 1971-09-07
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Granted: 1973-07-03
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Expires: 1991-09-07
Abstract
Abstract A PROCESS FOR SOFTENING FABRICS IN A CLOTHES DRYER COMPRISING LOADING FABRICS INTO A DRYER, ADDING A LENGTH OR SHEET OF FABRIC SOFTENING COMPOSITION AND OPERATING THE DRYER AT FROM ABOUT 75*F. TO ABOUT 170*F. TO EFFECT SOFTENING OF THE FABRICS, THE FABRIC SOFTENING COMPOSITION CONSISTING ESSENTIALLY OF A SUBSTRATE HAVING A SUBSTRATE COATING, WHICH CONSISTS ESSENTIALLY OF A SUBSTANTIALLY SOLID, WAXY, CATIONIC OR NONIONIC MATERIAL, AND HAVING A SUBSTANTIALLY SOLID OUTER COATING COMPRISING FROM 30% TO 100% BY WEIGHT OF A FABRIC SOFTENER, WHEREIN AT LEAST ONE OF THE COATINGS HAS A MELTING POINT EQUAL TO OR LESS THAN ABOUT 170*F.
Inventors
- 👤 P Zamora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/041; C11D17/047; C11D3/00; C11D3/0005; C11D3/001; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M23/00; D06M23/02; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/27; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31971; Y10T428/31993; Y10T442/00; Y10T442/20; Y10T442/2352
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |