US3097048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for dye-stripping
Assignee: Dow Chemical Co
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Filing: 1960-08-24
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Granted: 1963-07-09
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Expires: 1980-08-24
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm E Walles
- 👤 William F Tousignant
- 👤 Robert J Axelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:53
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/13; D06P5/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A DYE-STRIPPING COMPOSITION FOR STRIPPING VAT, SULFUR, AND DIRECT DYESTUFFS FROM A CELLULOSIC SUBSTRATE WHICH COMPOSITION COMPRISES POLY-N-VINYL-5-METHYL-2OXAZOLIDINONE DISSOLVED IN AN AQUEOUS SOLVENT VEHICLE, SAID SOLENT VEHICLE CONSISTING ESSSENTIALLY OF WATER AND A MINOR PROPORTION OF AN AGENT CHARACTERIZED BY BEING CAPABLE OF SOLUBLIZING SAID DYESTUFFS.
Claim 2
Dependent Claim
46 words
A DYE-STRIPPING COMPOSITION FOR STRIPPING VAT, SULFUR, AND DIRECT DYESTUFFS FROM A CELLULOSIC SUBSTRATE WHICH COMPOSITION COMPRISES POLY-N-VINYL-5-METHYL-2OXAZOLIDINONE DISSOLVED IN AN AQUEOUS SOLVENT VEHICLE, SAID SOLENT VEHICLE CONSISTING ESSSENTIALLY OF WATER AND A MINOR PROPORTION OF AN AGENT CHARACTERIZED BY BEING CAPABLE OF SOLUBLIZING SAID DYESTUFFS.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |