US2993743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
i i ttts
Assignee: —
•
Filing: —
•
Granted: 1961-07-25
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Expires: 1978-07-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:00
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22; D06P1/221; D06P1/38; D06P1/44; D06P1/62; D06P1/673; D06P1/67333; D06P1/6735; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P5/00; D06P5/001; D06P5/30; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A TWO-PHASE PRINTING PROCESS FOR PRINTING TEXTILE MATERIALS WITH A DYESTUFF SELECTED FROM THE CLASS CONSISTING OF VAT DYESTUFFS AND SULFUR DYESTUFFS WHEREIN SAID TEXTILE MATERIAL IS TREATED IN A FIRST STAGE BY PRINTING THEREON A COMPOSITION CONTAINING SAID DYESTUFF AND A THICKENING AGENT AND THEN DRYING SAID TEXTILE MATERIAL AND IN A SECOND STAGE BY APPLYING A REDUCING AGENT TO SAID TEXTILE MATERIAL AND THEN HEATING FOR A SHORT PERIOD OF TIME SUFFICIENT TO FIX SAID DYESTUFF ON SAID TEXTILE MATERIAL, AN ALKALINE AGENT ALSO BEING APPLIED TO SAID TEXTILE MATERIAL IN AT LEAST ONE OF SAID TWO STAGES, THE IMPROVEMENT WHICH COMPRISES: USING AS THE REDUCING AGENT IN SAID SECOND STAGE AN ALKALI SALT OF A HYDROXYALKYL SULFINIC ACID WITH FROM 2 TO 4 CARBON ATOMS, AND HEATING SAID TEXTILE MATERIAL IN SAID SECOND STAGE FOR A PERIOD OF TIME OF ABOUT 10 TO 60 SECONDS AT A TEMPERATURE BETWEEN 80* C. AND 200*C. WHEREBY SAID DYESTUFF IS FIXED ON SAID TEXTILE MATERIAL.
Claim 2
Dependent Claim
166 words
IN A TWO-PHASE PRINTING PROCESS FOR PRINTING TEXTILE MATERIALS WITH A DYESTUFF SELECTED FROM THE CLASS CONSISTING OF VAT DYESTUFFS AND SULFUR DYESTUFFS WHEREIN SAID TEXTILE MATERIAL IS TREATED IN A FIRST STAGE BY PRINTING THEREON A COMPOSITION CONTAINING SAID DYESTUFF AND A THICKENING AGENT AND THEN DRYING SAID TEXTILE MATERIAL AND IN A SECOND STAGE BY APPLYING A REDUCING AGENT TO SAID TEXTILE MATERIAL AND THEN HEATING FOR A SHORT PERIOD OF TIME SUFFICIENT TO FIX SAID DYESTUFF ON SAID TEXTILE MATERIAL, AN ALKALINE AGENT ALSO BEING APPLIED TO SAID TEXTILE MATERIAL IN AT LEAST ONE OF SAID TWO STAGES, THE IMPROVEMENT WHICH COMPRISES: USING AS THE REDUCING AGENT IN SAID SECOND STAGE AN ALKALI SALT OF A HYDROXYALKYL SULFINIC ACID WITH FROM 2 TO 4 CARBON ATOMS, AND HEATING SAID TEXTILE MATERIAL IN SAID SECOND STAGE FOR A PERIOD OF TIME OF ABOUT 10 TO 60 SECONDS AT A TEMPERATURE BETWEEN 80* C. AND 200*C. WHEREBY SAID DYESTUFF IS FIXED ON SAID TEXTILE MATERIAL.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |