US3577215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cleaning process
Assignee: F W MEANS AND CO
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Filing: 1969-02-03
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Granted: 1971-05-04
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Expires: 1989-02-03
Abstract
Abstract OIL IMPREGNATED TEXTILE CLEANING UTENSILS CAN BE CLEANED AND PREPARED FOR REUSE IN A SINGLE BRIEF OPERATION BY USING A PETROLEUM MINERAL OIL AS THE CLEANING MEDIUM. THE UTENSILS ARE CLEANED BY PLACING THEM INTO THE WHEEL OF A COMMERCIAL DRY CLENAING APPARATUS THEN ADDING AN EXCESS OF OIL BEYOND THAT NECESSARY TO SATURATE THE UTENSILS AT A TEMPERATURE BETWEEN 60-250*F. AND AGITATING THE WHEEL FOR ABOUT 15 MINUTES. THE OIL IS DRAINED OFF AND THE UTENSILS ARE SPUN TO REMOVE EXCESS OIL BUT LEAVE ABOUT 20 TO 40 WT. PERCENT OIL IN THE UTENSIL BASED ON THE WEIGHT OF THE CLEAN, DRY UTENSIL OR IMPLEMENT.
Inventors
- 👤 Ector P Impullitti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/08; D06F; D06F43/00; D06F43/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |