US2723262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agent for dyeing animal fibres and method of making same
Assignee: Individual
•
Filing: 1952-09-23
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Granted: 1955-11-08
•
Expires: 1972-09-23
Abstract
No abstract record available.
Inventors
- 👤 Guasco Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/06; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/623; D06P1/64; D06P1/651; D06P3/14; D06P3/16; D06P3/20; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF PREPARING AN ACCELERATING AGENT FOR THE ACID AND CHROME DYEING OF ANIMAL FIBRES, WHICH COMPRISES TREATING WOOL UNDER REFLUX FOR ABOUT 45 MINUTES WITH METHYL SULPHONIC ACID AND WATER, IN THE PROPORTIONS OF ABOUT 1 KG. WOOL, 10 LITRES OF WATER AND 96 G. OF METHYL SULPHONIC ACID, COOLING THE REACTION MIXTURE TO ROOM TEMPERATURE, ADDING METHYL BORIC ESTER IN THE PROPORTION OF ABOUT 205 G., NEUTRALIZING THE RESULTING SOLUTION WITH ALKALI, AND CONCENTRATING THE NEUTRAL SOLUTION UNDER VACUUM.
Claim 2
Independent Claim
82 words
THE METHOD OF PREPARING AN ACCELERATING AGENT FOR THE ACID AND CHROME DYEING OF ANIMAL FIBRES, WHICH COMPRISES TREATING WOOL UNDER REFLUX FOR ABOUT 45 MINUTES WITH METHYL SULPHONIC ACID AND WATER, IN THE PROPORTIONS OF ABOUT 1 KG. WOOL, 10 LITRES OF WATER AND 96 G. OF METHYL SULPHONIC ACID, COOLING THE REACTION MIXTURE TO ROOM TEMPERATURE, ADDING METHYL BORIC ESTER IN THE PROPORTION OF ABOUT 205 G., NEUTRALIZING THE RESULTING SOLUTION WITH ALKALI, AND CONCENTRATING THE NEUTRAL SOLUTION UNDER VACUUM.
References Cited (Backward Citations)
No citation records indexed.
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 |