US2540131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersible phenothiazine powders
Assignee: EIDP Inc
•
Filing: 1945-02-21
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Granted: 1951-02-06
•
Expires: 1965-02-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Littler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:23
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K47/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COMPOSITION IN THE FORM OF A POWDERED, INTIMATE MIXTURE WHICH IS READILY DISPERSIBLE IN WATER TO GIVE A NON-FOAMING PHENOTHIAZINE DRENCH, THE COMPOSITION COMPRISING PHENOTHIAZINE AND A MINOR PROPORTION OF A NON-IONIC WETTING PROMOTER HAVING THE FORMULA
Claim 2
Dependent Claim
38 words
A COMPOSITION IN THE FORM OF A POWDERED, INTIMATE MIXTURE WHICH IS READILY DISPERSIBLE IN WATER TO GIVE A NON-FOAMING PHENOTHIAZINE DRENCH, THE COMPOSITION COMPRISING PHENOTHIAZINE AND A MINOR PROPORTION OF A NON-IONIC WETTING PROMOTER HAVING THE FORMULA
References Cited (Backward Citations)
US2042359A
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US2217566A
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US2098836A
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US2161462A
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US2236545A
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US2262454A
Cited
US2294888A
Cited
US2407486A
Cited
US2495270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |