US3268538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
8-sulfonamidoquinolines
Assignee: Indiana University Foundation Inc
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Filing: 1963-02-26
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Granted: 1966-08-23
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 John H Billman
- 👤 Chernin Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:13
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D215/40; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/36; C22B3/362; C22B3/364; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
AN 8-(SULFONAMIDO) QUINOLINE 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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |