US2422688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising colloidal silver salt of sulfa drug
Assignee: ER Squibb and Sons LLC
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Filing: 1942-10-16
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Granted: 1947-06-24
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Expires: 1962-10-16
Abstract
No abstract record available.
Inventors
- 👤 William A Lott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:10
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/69; A; A61; A61K; A61K31/00; A61K31/28; A61K31/33; A61K31/38; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190319168A
Cited
AT101131B
Cited
US1922006A
Cited
US1955211A
Cited
US2133787A
Cited
FR849504A
Cited
US2238973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |