US3733281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning carpets and fabrics
Assignee: Individual
•
Filing: 1971-04-06
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Granted: 1973-05-15
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Expires: 1991-04-06
Abstract
Abstract DISCLOSED IS A METHOD OF CLEANING CARPETS AND FABRICA COMPRISING COMBINING AT ROOM TEMPERATURE A FLUOROCARBON SUCH AS, FOR EXAMPLE, A FLUOROMETHANE, WITH AN AQUEOUS MEDIUM, THEN ADDING TO AND MIXING WITH SAID COMBINATION A FATTY ACID SUCH AS, FOR EXAMPLE, LAURIC OR STEARIC ACID, AND AN AMINE SUCH AS TRIETHANOLAMINE OR TRIETHYLAMINE, WHICH CORMS AN AMINE SOAP, AND IMMEDIATELY THEREAFTER CONTACTING THE FABRIC MATERIAL WITH THE CLEANING COMPOSITION SO PREPARED.
Inventors
- 👤 L Durfey
- 👤 W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:05
CPC Classifications
C; C11; C11D; C11D9/00; C11D9/04; C11D9/22; C11D9/28; C11D3/00; C11D3/0005; C11D3/0031; C11D9/002
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |