Patent US3701627A successfully refreshed from Google Patents.
US3701627A
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US
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Process for the chemical cleaning of textiles
Assignee: Henkel AG and Co KGaA
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Filing: 1971-01-27
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Granted: 1972-10-31
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Expires: 1991-01-27
Abstract
Abstract A PROCESS FOR THE CHEMICAL CLEANING OF TEXTILES WHICH COMPRISES TREATING SOILED TEXTILES WITH A CLEAR WATER-CONTAINING ORGANIC SOLVENT MIXTURE CONSISTING ESSENTIALLY OF (A) FROM 20% TO 40% BY VOLUME OF A HALOGENATED HYDROCARBON HAVING FROM 1 TO 2 CARBON ATOMS, (B) FROM 55% TO 70% BY VOLUME OF A MONOHYDRIC ALCOHOL HAVING FROM 2 TO 5 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKANOLS AND ETHYLENE GLYCOL MONOALKYL ESTERS, AND (C) FROM 5% TO 12% BY VOLUME OF EATER AND RECOVERING CLEANED TEXTILES.
Inventors
- 👤 Werner Grunewalder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:34
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |