US3097049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for bleaching and shrinkproofing wool
Assignee: Individual
•
Filing: 1959-03-26
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Granted: 1963-07-09
•
Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Meybeck Jean
- 👤 Schirle Agnes Jeanne Ant Cazal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/30; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/24; D06L4/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR BLEACHING AND SHRINKPROOFING WOOL WITH MINIMUM ALTERATION OF THE WOOL, WHICH COMPRISES INTRODUCING THE WOOL IN WATER, INTRODUCING PROGRESSIVELY A DILUTE SOLUTION OF AN ACID WITH CONTINUOUS AGITATION UNTIL A PH OF 2-4.5 IS REACHED, CONTAINING AGITATION, INTRODUCING SLOWLY AN AQUEOUS CHLORITE SOLUTION OF PH 8-9 AT A TEMPERATURE BELOW ABOUT 50*C., UNTIL THE WOOL TURNS PINK, WHEREBY THE PH OF THE CHLORITE SOLUTION IS LOWERED WITHOUT EVOLUTION OF CIO2 AND THE BATH REMAINS SUBSTANTIALLY COLORLESS THROUGHOUT THE TREATMENT, AND TREATING THE PINK WOOL WITH A REDUCING SOLUTION, SAID INTRODUCTION OF THE WOOL IN WATER, SAID PROGRESSIVE INTRODUCTION OF DILUTE ACID, SAID CONTINUED AGITATION, SAID SLOW INTRODUCTION OF AQUEOUS CHLORITE SOLUTION OF PH 8-9, AND SAID TREATMENT WITH A REDUCING SOLUTION BEING CARRIED OUT SERIATIM.
Claim 2
Dependent Claim
128 words
A PROCESS FOR BLEACHING AND SHRINKPROOFING WOOL WITH MINIMUM ALTERATION OF THE WOOL, WHICH COMPRISES INTRODUCING THE WOOL IN WATER, INTRODUCING PROGRESSIVELY A DILUTE SOLUTION OF AN ACID WITH CONTINUOUS AGITATION UNTIL A PH OF 2-4.5 IS REACHED, CONTAINING AGITATION, INTRODUCING SLOWLY AN AQUEOUS CHLORITE SOLUTION OF PH 8-9 AT A TEMPERATURE BELOW ABOUT 50*C., UNTIL THE WOOL TURNS PINK, WHEREBY THE PH OF THE CHLORITE SOLUTION IS LOWERED WITHOUT EVOLUTION OF CIO2 AND THE BATH REMAINS SUBSTANTIALLY COLORLESS THROUGHOUT THE TREATMENT, AND TREATING THE PINK WOOL WITH A REDUCING SOLUTION, SAID INTRODUCTION OF THE WOOL IN WATER, SAID PROGRESSIVE INTRODUCTION OF DILUTE ACID, SAID CONTINUED AGITATION, SAID SLOW INTRODUCTION OF AQUEOUS CHLORITE SOLUTION OF PH 8-9, AND SAID TREATMENT WITH A REDUCING SOLUTION BEING CARRIED OUT SERIATIM.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |