Patent US2657970A successfully refreshed from Google Patents.
US2657970A
Expired / Lapsed
US
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Stabilized stains comprising dioxane
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-04-25
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Granted: 1953-11-03
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 Rudick Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:12
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; C; C09; C09B; C09B67/00; C09B67/0071; C09B67/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A SOLUTION COMPRISING DIOXANE, WATER, AT LEAST ONE OIL-SOLUBLE ORGANIC DYE AND FROM 0.5% TO 1.5% BY WEIGHT OF DIETHYL AMINOETHANOL.
Claim 2
Dependent Claim
21 words
A SOLUTION COMPRISING DIOXANE, WATER, AT LEAST ONE OIL-SOLUBLE ORGANIC DYE AND FROM 0.5% TO 1.5% BY WEIGHT OF DIETHYL AMINOETHANOL.
References Cited (Backward Citations)
US2251486A
Cited
US2524811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |