US3091508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cleaning composition and method of use
Assignee: Individual
•
Filing: 1959-07-27
•
Granted: 1963-05-28
•
Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Le Roy B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
IN A METHOD OF DRY CLEANING TEXTILE MATERIALS IN AN ORGANIC DRY CLEANING SOLVENT SYSTEM WHICH INCLUDES THE STEPS OF WASHING THE TEXTILE MATERIAL IN A DRY CLEANING SOLVENT SYSTEM BY CIRCULATING THE SOLVENT SYSTEM THROUGH A WASHER CONTAINING THE TEXTILE MATERIAL, FILTERING THE DRY CLEANING SOLVENT AFTER PASSAGE THROUGH THE WASHER, AND RETURNING THE FILTERED DRY CLEANING SOLVENT SYSTEM TO THE WASHER, WHEREIN THE DRY CLEANING SLOVENT SYSTEM CONSISTS ESSENTIALLY OF AN ORGANIC SOLVENT AS A BASSE, 0.25-10 PARTS BY WEIGHT OF DETERGENT PER 100 PARTS BY WEIGHT OF SOLVENT, 0.2-10 PARTS BY WEIGHT OF A POLYHYDRIC ALCOHOL POLYMER PER 100 PARTS BY WEIGHT OF SOLVENT, AND 0.5 PARTS BY WEIGHT OF WATER PER 100 PARTS BY WEIGHT OF THE DRY CLEANING COMPOSITION, THE IMPROVEMENT OF CONTINUOUSLY
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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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |