US3351419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permonosulfuric acid-hydrogen peroxide wool shrinkproofing combined with dyeing
Assignee: Precision Processes Textiles Ltd
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Filing: 1964-02-20
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Granted: 1967-11-07
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Fell Eric Tom
- 👤 Fox Scott Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22; A61K8/23; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61Q5/10; D; D06; D06M; D06M11/00; D06M11/07; D06M11/30; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/432; A61K2800/4322; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A PROCESS FOR REDUCING THE TENDENCY TO FELT OF ANIMAL HAIR AND MATERIALS COMPRISING THE SAME WHICH COMPRISES (A) FRIST TREATING SAID ANIMAL HAIR WITH AN AQUEOUS SOLUTION OF A PERMONOSULPHURIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERMONOSULPHURIC ACID AND WATERSOLUBLE SALTS THEREOF, SAID AQUEOUS SOLUTION HAVING A PH VALUE OF LESS THAN 8 AND (B) AS THE NEXT ESSENTIAL STEP, TREATING SAID HAIR WITH A DILUTE AQUEOUS SOLUTION OF HYDROGEN PEROXIDE HAVING A PH VALUE WITHIN THE RANGE OF 6.5 TO 10.5
Claim 2
Dependent Claim
84 words
A PROCESS FOR REDUCING THE TENDENCY TO FELT OF ANIMAL HAIR AND MATERIALS COMPRISING THE SAME WHICH COMPRISES (A) FRIST TREATING SAID ANIMAL HAIR WITH AN AQUEOUS SOLUTION OF A PERMONOSULPHURIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERMONOSULPHURIC ACID AND WATERSOLUBLE SALTS THEREOF, SAID AQUEOUS SOLUTION HAVING A PH VALUE OF LESS THAN 8 AND (B) AS THE NEXT ESSENTIAL STEP, TREATING SAID HAIR WITH A DILUTE AQUEOUS SOLUTION OF HYDROGEN PEROXIDE HAVING A PH VALUE WITHIN THE RANGE OF 6.5 TO 10.5
Claim 3
Dependent Claim
157 words
A PROCESS FOR THE PRODUCTION OF COLOURED SHRINKRESISTANT ANIMAL HAIR AND MATERIALS COMPRISING THE SAME WHICH COMPRISES (A) FIRST TREATING SAID ANIMAL HAIR AT A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 70*C. WITH AN AQUEOUS SOLUTION OF A PERMONOSULPHURIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERMONOSULPHURIC ACID AND WATER-SOLUBLE SALTS THEREOF, SAID AQUEOUS SOLUTION HAVING A PH VALUE WITHIN THE RANGE OF 0.1 AND 8.0 (B) AS THE NEXT ESSENTIAL STEP, TREATING SAID HAIR WITH A DILUTE AQUEOUS SOLUTION OF HYDROGEN PERIOXIDE HAVING A PH VALUE WITHIN THE RANGE OF 6.5 TO 10.5 AND A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 60*C. AND (C) THEN APPLYING TO AT LEAST SELECTED AREAS OF THE THUS TREATED ANIMAL HAIR A COMPOSITION COMPRISING WATER, A WATER-SOLUBLE FORM OF A REACTIVE DYESTUFF AND AN ACID ACCEPTOR, SAID COMPOSITION BEING MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 60*C. DURING CONTACT WITH SAID HAIR.
Claim 4
Dependent Claim
157 words
A PROCESS FOR THE PRODUCTION OF COLOURED SHRINKRESISTANT ANIMAL HAIR AND MATERIALS COMPRISING THE SAME WHICH COMPRISES (A) FIRST TREATING SAID ANIMAL HAIR AT A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 70*C. WITH AN AQUEOUS SOLUTION OF A PERMONOSULPHURIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERMONOSULPHURIC ACID AND WATER-SOLUBLE SALTS THEREOF, SAID AQUEOUS SOLUTION HAVING A PH VALUE WITHIN THE RANGE OF 0.1 AND 8.0 (B) AS THE NEXT ESSENTIAL STEP, TREATING SAID HAIR WITH A DILUTE AQUEOUS SOLUTION OF HYDROGEN PERIOXIDE HAVING A PH VALUE WITHIN THE RANGE OF 6.5 TO 10.5 AND A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 60*C. AND (C) THEN APPLYING TO AT LEAST SELECTED AREAS OF THE THUS TREATED ANIMAL HAIR A COMPOSITION COMPRISING WATER, A WATER-SOLUBLE FORM OF A REACTIVE DYESTUFF AND AN ACID ACCEPTOR, SAID COMPOSITION BEING MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF ROOM TEMPERATURE TO 60*C. DURING CONTACT WITH SAID HAIR.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |