Patent US2858183A successfully refreshed from Google Patents.
US2858183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide bleaching of cotton fabric
Assignee: EIDP Inc
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Filing: 1955-06-28
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Granted: 1958-10-28
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Howard L Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:40
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE PROCESS OF BLEACHING WOVEN COTTOM FABRIC WHICH COMPRISES WETTING-OUT SAID FABRIC IN AN AQUEOUS SOLUTION CONTAINING 0.1% TO 1% OF A SURFACE ACTIVE WETTING AGENT AND 0.1% TO 1% OF MOLECULARLY DEHYDRATED SALT OF A PHOSPHORIC ACID OFR A MINIMUM PERIOD OF ABOUT ONE MINUTE, RINSING THE FABRIC WITH WATER UNTIL SAID WETTING-OUT SOLUTION IS SUBSTANTIALLY REMOVED FROM SAID FABRIC, INCORPORATING IN SAID FABRIC BETWEEN 50% AND 150% BY WEIGHT OF AN ALKALINE PEROXIDE BLEACHING SOLUTION, HEATING SAID FABRIC TO A TEMPERATURE OF 160*F. TO 212*F., MAINTAINING SAID FABRIC AT SUCH TEMPERATURE FOR A PERIOD OF 30 MINUTES TO 90 MINUTES, AND RINSING SAID FABRIC IN WATER TO REMOVE THE BLEACHING SOLUTION THEREFROM.
Claim 2
Dependent Claim
114 words
THE PROCESS OF BLEACHING WOVEN COTTOM FABRIC WHICH COMPRISES WETTING-OUT SAID FABRIC IN AN AQUEOUS SOLUTION CONTAINING 0.1% TO 1% OF A SURFACE ACTIVE WETTING AGENT AND 0.1% TO 1% OF MOLECULARLY DEHYDRATED SALT OF A PHOSPHORIC ACID OFR A MINIMUM PERIOD OF ABOUT ONE MINUTE, RINSING THE FABRIC WITH WATER UNTIL SAID WETTING-OUT SOLUTION IS SUBSTANTIALLY REMOVED FROM SAID FABRIC, INCORPORATING IN SAID FABRIC BETWEEN 50% AND 150% BY WEIGHT OF AN ALKALINE PEROXIDE BLEACHING SOLUTION, HEATING SAID FABRIC TO A TEMPERATURE OF 160*F. TO 212*F., MAINTAINING SAID FABRIC AT SUCH TEMPERATURE FOR A PERIOD OF 30 MINUTES TO 90 MINUTES, AND RINSING SAID FABRIC IN WATER TO REMOVE THE BLEACHING SOLUTION THEREFROM.
References Cited (Backward Citations)
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US2107297A
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US2231426A
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US2257716A
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |