Patent US3026166A successfully refreshed from Google Patents.
US3026166A
Expired / Lapsed
US
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Peroxide-dipersulfate bleaching of cotton fibers
Assignee: FMC Corp
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Filing: 1959-10-09
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Granted: 1962-03-20
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Expires: 1979-10-09
Abstract
No abstract record available.
Inventors
- 👤 Gallagher Gerald Thomas
- 👤 Weinberg Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:39
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/10; D06L4/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN THE METHOF OF COLD BLEACHING COTTON FIBERS BY DAMPENING THE FIBERS WITH A BLEACH COMPRISING AN AQUEOUS ALKALINE HYDROGEN PEROXIDE SOLUTION AND PERMITTING THEM TO STAND IN A DAMPENED CONDITION AT TEMPERATURES OF ABOUT 50*F. TO ABOUT 120*F., AND WHEREIN THE ABSORBENCY OF SAID COTTON FIBERS IS ORDINARILY DIMINISHED BY THIS TREATMENT, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE BLEACHING BATH AS AQUEOUS ALKALINE HYDROGEN PEROXIDE SOLUTION CONTAINING AS AN ESSENTAIL INGREDIENT, A DIPERSULFATE FROM THE GROUP CONSISTING OF THE ALKALI METAL DIPERSULFATES AND AMMONIUM DIPERSULFATE, WHEREBY THE ABSORBENCY OF SAID COTTON FIBERS IS NOT MATERIALLY DIMINISHED.
Claim 2
Dependent Claim
98 words
IN THE METHOF OF COLD BLEACHING COTTON FIBERS BY DAMPENING THE FIBERS WITH A BLEACH COMPRISING AN AQUEOUS ALKALINE HYDROGEN PEROXIDE SOLUTION AND PERMITTING THEM TO STAND IN A DAMPENED CONDITION AT TEMPERATURES OF ABOUT 50*F. TO ABOUT 120*F., AND WHEREIN THE ABSORBENCY OF SAID COTTON FIBERS IS ORDINARILY DIMINISHED BY THIS TREATMENT, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE BLEACHING BATH AS AQUEOUS ALKALINE HYDROGEN PEROXIDE SOLUTION CONTAINING AS AN ESSENTAIL INGREDIENT, A DIPERSULFATE FROM THE GROUP CONSISTING OF THE ALKALI METAL DIPERSULFATES AND AMMONIUM DIPERSULFATE, WHEREBY THE ABSORBENCY OF SAID COTTON FIBERS IS NOT MATERIALLY DIMINISHED.
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |