US3081265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing cotton fabrics
Assignee: Metal Hydrides Inc
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Filing: 1959-07-15
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Granted: 1963-03-12
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Francis K Burr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:45
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN THE WASHING OF COTTON AND RAYON FABRICS WHEREIN THE FABRIC IS SUBJECTED TO A WASHING OPERATION IN AN AQUEOUS SOLUTION OF A DETERGENT WHEREBY REPEATED WASHINGS RESULT IN LOSS OF STRENGTH OF SAID FABRIC, THE IMPROVEMENT WHEREBY SAID LOSS OF STRENGTH IS DECREASED BY DISSOLVING IN SAID AQUEOUS SOLUTION IN PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID SOLUTION ABOUT 3.5 TO 17.5 PARTS OF A BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE AND FROM ABOUT 7 TO 35 PARTS OF AN ALKALINE MATERIAL FOR STABILIZING THE BOROHYDRIDE.
Claim 2
Dependent Claim
96 words
IN THE WASHING OF COTTON AND RAYON FABRICS WHEREIN THE FABRIC IS SUBJECTED TO A WASHING OPERATION IN AN AQUEOUS SOLUTION OF A DETERGENT WHEREBY REPEATED WASHINGS RESULT IN LOSS OF STRENGTH OF SAID FABRIC, THE IMPROVEMENT WHEREBY SAID LOSS OF STRENGTH IS DECREASED BY DISSOLVING IN SAID AQUEOUS SOLUTION IN PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF SAID SOLUTION ABOUT 3.5 TO 17.5 PARTS OF A BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE AND FROM ABOUT 7 TO 35 PARTS OF AN ALKALINE MATERIAL FOR STABILIZING THE BOROHYDRIDE.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |