Patent US2665188A successfully refreshed from Google Patents.
US2665188A
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Stabilization of the viscosities of vat dye pastes
Assignee: GAF Chemicals Corp
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Filing: 1951-01-03
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Granted: 1954-01-05
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Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Chris C Schulze
- 👤 Orenyo Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0077
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A VAT DYE IN PASTE FORM ESSENTIALLY COMPRISING A DISPERSION OF SAID DYE IN WATER BY MEANS OF A DISPERSING AGENT SELECTED FROM A GROUP CONSISTING OF WATER SOLUBLE LIGNOSULFONATES AND REACTION PRODUCTS OF FORMALDEHYDE WITH A NAPHTHALENE SULFONATE, SAID DISPERSION BEING STABILIZED AT LOW VISCOSITY WITH A TRIALKYLOLAMINE TRIESTER OF AN UNSUBSTITUTED ALIPHATIC CARBOXYLIC ACID CONTAINING AT LEAST 4 CARBON ATOMS.
Claim 2
Dependent Claim
62 words
A VAT DYE IN PASTE FORM ESSENTIALLY COMPRISING A DISPERSION OF SAID DYE IN WATER BY MEANS OF A DISPERSING AGENT SELECTED FROM A GROUP CONSISTING OF WATER SOLUBLE LIGNOSULFONATES AND REACTION PRODUCTS OF FORMALDEHYDE WITH A NAPHTHALENE SULFONATE, SAID DISPERSION BEING STABILIZED AT LOW VISCOSITY WITH A TRIALKYLOLAMINE TRIESTER OF AN UNSUBSTITUTED ALIPHATIC CARBOXYLIC ACID CONTAINING AT LEAST 4 CARBON ATOMS.
References Cited (Backward Citations)
USRE21530E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |