Patent US3178253A successfully refreshed from Google Patents.
US3178253A
Expired / Lapsed
US
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Method of dyeing synthetic fibers wherein the dyestuff is developed on the fiber
Assignee: Monsanto Co
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Filing: 1961-05-22
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Granted: 1965-04-13
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Julian J Hirshfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:22
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/28; C; C09; C09B; C09B39/00; C09B45/00; C09B45/01; D06P1/00; D06P1/02; D06P1/12; D06P1/122; D06P1/32; D06P3/34; D06P3/52; D06P3/56; D06P3/70; D06P3/78; Y; Y10; Y10S; Y10S8/00; Y10S8/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF DYEING SYNTHETIC FIBERS COMPRISING TREATING THE FIBERS IN A HEATED ACIDIC AQUEOUS BATH WITH A SUBSTITUTED, SULFONATED NAPHTHALENE COMPOUND SUITABLE FOR USE AS AN INTERMEDIATE FOR AZO DYESTUFFS, THEN ADDING A SOLUBLE NITRITE AND A WATER SOLUBLE METALLIC SALT, REMOVING THE FIBERS FROM THE BATH, RINSING, SCOURING AND DRYING SAID FIBERS.
Claim 2
Independent Claim
54 words
A METHOD OF DYEING SYNTHETIC FIBERS COMPRISING TREATING THE FIBERS IN A HEATED ACIDIC AQUEOUS BATH WITH A SUBSTITUTED, SULFONATED NAPHTHALENE COMPOUND SUITABLE FOR USE AS AN INTERMEDIATE FOR AZO DYESTUFFS, THEN ADDING A SOLUBLE NITRITE AND A WATER SOLUBLE METALLIC SALT, REMOVING THE FIBERS FROM THE BATH, RINSING, SCOURING AND DRYING SAID FIBERS.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |