US2995413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for coloring fibrous materials
Assignee: Wyeth Holdings LLC
•
Filing: 1956-07-30
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Granted: 1961-08-08
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Klein
- 👤 Voorhees Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:23
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0077; D06P1/22; D06P1/228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A NEUTRAL, VAT DYE, PRINTING GUM COMPOSITION ADAPTED FOR USE IN THE FLASH-AGING METHOD OF PRINTING, SAID COMPOSITION COMPRISING THE GUM AND THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE CONSISTING ESSENTIALLY OF THE VAT DYE, WATER, SODIUM FORMALDEHYDE SULFOXALATE AND THIODIETHYLENE GLYCOL.
Claim 2
Dependent Claim
43 words
A NEUTRAL, VAT DYE, PRINTING GUM COMPOSITION ADAPTED FOR USE IN THE FLASH-AGING METHOD OF PRINTING, SAID COMPOSITION COMPRISING THE GUM AND THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE CONSISTING ESSENTIALLY OF THE VAT DYE, WATER, SODIUM FORMALDEHYDE SULFOXALATE AND THIODIETHYLENE GLYCOL.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |