US3687729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning materials
Assignee: Individual
•
Filing: 1969-04-17
•
Granted: 1972-08-29
•
Expires: 1989-04-17
Abstract
Abstract THE METHOD OF CLEANING THE SURFACE OF AN ARTICLE COMPRISES THE STEPS OF FORCING MOLECULAR SIZED CLEANING SOVENT AGAINST THE SURFACE AT A HIGH VELOCITY AND SUCKING OFF THE SOLVENT UPON PENETRATION OR STRIKING OF THE MATTER TO BE REMOVED FROM THE SURFACE BY THE SOLVENT MOLECULES. THE SOLVENT MAY INCLUDE A RARE EARTH ELEMENT, SUCH AS LANTHANUM, FOR IMPROVED CLEANING OF CERTAIN MATERIALS. THE METHOD AND APPARATUS HAVE PARTICULAR APPLICATION IN THE CLEANING OF FABRICS AND IN PARTICULAR THE CLEANING OF FABRICS OR COVERING OF ARTICLES HAVING DIFFICULT TO CLEAN CONFIGURATIONS SUCH AS THE CONFIGURATIONS OF LAMP SHADES.
Inventors
- 👤 Lloyd Earl Winburn
- 👤 Jack B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/34; D; D06; D06F; D06F43/00; D06F43/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |