Patent US2493471A successfully refreshed from Google Patents.
US2493471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized organic compounds and methods of obtaining the same
Assignee: Parke Davis and Co LLC
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Filing: 1945-06-04
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Granted: 1950-01-03
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Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 Edward W Tillitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:40
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/06; A61K47/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A STABILIZED MIXTURE OF A SYMPATHOMIMETICALLY ACTIVE ORGANIC COMPOUND HAVING THE FORMULA,
Claim 2
Dependent Claim
12 words
A STABILIZED MIXTURE OF A SYMPATHOMIMETICALLY ACTIVE ORGANIC COMPOUND HAVING THE FORMULA,
References Cited (Backward Citations)
US2047144A
Cited
US2130322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |