US3819693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9-hydroxyfluorene-2-alkanoic acids and esters thereof
Assignee: ER Squibb and Sons LLC
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Filing: 1971-06-18
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Granted: 1974-06-25
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Expires: 1991-06-18
Abstract
Abstract 9-OXYGENATED FLUORENE-2-ACETIC ACID DERIVATIVES AND CORRESPONDING 9-HALOGENATED DERIVATAIVES AND METHODS FOR PREPARING THESE DERIVATIVES ARE PROVIDED. THESE COMPOUNDS ARE USEFUL AS ANTI-INFLAMMATORY AGENTS. IN ADDITION, A METHOD FOR TREATING INFLAMMATORY CONDITIONS BY ADMINISTERING THESE 9-SUBSTITUTED FLUORENE-2-ACETIC ACID DERIVATIVES ARE PROVIDED.
Inventors
- 👤 S Levine
- 👤 P Principe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/13; C07C205/19; C07C205/49; C07C205/56; C07C57/00; C07C57/52; C07C57/62; C07C59/00; C07C59/40; C07C59/42; C07C59/54; C07C59/56; C07C59/58; C07C59/72; C07C59/76; C07C59/86; C07C59/88; C07C59/90; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |