US2723178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the migration of metallized dyes between dye bath and fabric
Assignee: Wyeth Holdings LLC
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Filing: 1951-02-10
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Granted: 1955-11-08
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Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Mooradian Shannon
- 👤 Millson Henry Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/046; D06P1/00; D06P1/44; D06P1/655; D06P1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF DYEING BASIC NITROGENOUS FIBERS WITH METALLIZED AZO DYES SOLUBLE IN ACID BATHS, WHICH COMPRISES SUBJECTING THE MATERIAL TO BE DYED TO A DYE BATH CONTAINING A METALLIZED AZO DYE, A WATER SOLUBLE ACID AND AN AMOUNT SUFFICIENT TO BE EFFECTIVE BUT INSUFFICIENT TO CAUSE SCUM FORMATION AND EXCESSIVE PRECIPITATION IN THE BATH OF GAMMA-ALKYL AMIDO PROPYL QUATERNARY AMMONIUM SALT HAVING THE FORMULA:
Claim 2
Independent Claim
65 words
A METHOD OF DYEING BASIC NITROGENOUS FIBERS WITH METALLIZED AZO DYES SOLUBLE IN ACID BATHS, WHICH COMPRISES SUBJECTING THE MATERIAL TO BE DYED TO A DYE BATH CONTAINING A METALLIZED AZO DYE, A WATER SOLUBLE ACID AND AN AMOUNT SUFFICIENT TO BE EFFECTIVE BUT INSUFFICIENT TO CAUSE SCUM FORMATION AND EXCESSIVE PRECIPITATION IN THE BATH OF GAMMA-ALKYL AMIDO PROPYL QUATERNARY AMMONIUM SALT HAVING THE FORMULA:
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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |