US3149104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-hydroxy-7-styryl-1, 8-naphthyridine-3-carboxylic acids and esters
Assignee: STWB Inc
•
Filing: 1961-01-03
•
Granted: 1964-09-15
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Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 George Y Lesher
- 👤 Monte D Gruett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:55
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/35; A61K31/395; A61K31/435; C07D471/00; C07D471/02; C07D471/04; F; F16; F16D; F16D65/00; F16D65/02; F16D65/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |