US2674515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of dyeing nitrogenous mate
Assignee: —
•
Filing: —
•
Granted: 1954-04-06
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B62/513; D; D06; D06P; D06P1/00; D06P1/36; D06P1/38; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P3/24; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR DYEING MATERIALS, WHICH OWING TO THEIR NITROGEN CONTENT ARE CAPABLE OF BEING DYED WITH ACID DYESTUFFS, WHICH PROCESS COMPRISES DYEING WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND COBALT COMPOUNDS IN WHICH EACH ATOM OF SAID METALS IS BOUND IN COMPLEX UNION TO ONE MOLECULE OF TWO DIFFERENT DYESTUFFS ONE OF WHICH IS AN ORTHO:ORTHO''-DIHYDROXYMONOAZO-DYESTUFF AND THE OTHER OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF ORTHO:ORTHO''DIHYDROXY-MONOAZO-DYESTUFFS AND ORTHO-HYDROXY-ORTHO''-AMINO-MONOAZO-DYESTUFFS, ONE OF WHICH DYESTUFFS IS FREE FROM GROUPS IMPARTING SOLUBILITY AND THE OTHER OF WHICH CONTAINS AS THE SOLE GROUP IMPARTING SOLUBILITY A SULFONIC ACID AMIDE GROUP, WHICH PROCESS COMPRISES FURTHERMORE DYEING IN AN ACID DYEBATH OF WHICH THE PH VALUE IS AT LEAST HIGH ENOUGH TO ENSURE THAT NO DEMETALLIZATION OCCURS AT THE DYEING TEMPERATURE.
Claim 2
Dependent Claim
132 words
A PROCESS FOR DYEING MATERIALS, WHICH OWING TO THEIR NITROGEN CONTENT ARE CAPABLE OF BEING DYED WITH ACID DYESTUFFS, WHICH PROCESS COMPRISES DYEING WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND COBALT COMPOUNDS IN WHICH EACH ATOM OF SAID METALS IS BOUND IN COMPLEX UNION TO ONE MOLECULE OF TWO DIFFERENT DYESTUFFS ONE OF WHICH IS AN ORTHO:ORTHO''-DIHYDROXYMONOAZO-DYESTUFF AND THE OTHER OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF ORTHO:ORTHO''DIHYDROXY-MONOAZO-DYESTUFFS AND ORTHO-HYDROXY-ORTHO''-AMINO-MONOAZO-DYESTUFFS, ONE OF WHICH DYESTUFFS IS FREE FROM GROUPS IMPARTING SOLUBILITY AND THE OTHER OF WHICH CONTAINS AS THE SOLE GROUP IMPARTING SOLUBILITY A SULFONIC ACID AMIDE GROUP, WHICH PROCESS COMPRISES FURTHERMORE DYEING IN AN ACID DYEBATH OF WHICH THE PH VALUE IS AT LEAST HIGH ENOUGH TO ENSURE THAT NO DEMETALLIZATION OCCURS AT THE DYEING TEMPERATURE.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |