US3101239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cleaning
Assignee: RR Street and Co Inc
•
Filing: 1953-10-07
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Granted: 1963-08-20
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Expires: 1973-10-07
Abstract
No abstract record available.
Inventors
- 👤 Paul V Warren
- 👤 Martin B Mathews
- 👤 Hirschhorn Ernestine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:53
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; D06F; D06F43/00; D06F43/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN THE DRY CLEANING OF SOLID FABRICS, THE STEPS WHICH COMPRISE CLEANING SUCCESSIVE BATCHES OF SAID FABRICS WITH A CONTINUOUSLY CIRCULATING FILTERED WATER-IMMISCIBLE DRY CLEANING LIQUID ORGANIC SOLVENT CONTAINING (A) FROM ABOUT 1.5% TO ABOUT 3% OF AN OIL-SOLUBLE DRY CLEANING WATEREMULSIFYING DETERGENT SELECTED FROM THE GROUP CONSISTING OF SULFATE AND SULFONATE DETERGENTS CONTAINING AN ALKYL GROUP OF AT LEAST 8 CARBON ATOMS, AND (B) FROM ABOUT 0.2% TO ABOUT 0.4% OF WATER SO FINELY EMULSIFIED IN SAID ORGANIC SOLVENT AS TO FORM A SUBSTANTIALLY CLEAR HOMOGENEOUS EMULSION, AND EMULSION HAVING AN ELECTRICAL CON-
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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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |