US3558690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted derivatives of 2-anilinophenylacetic acids and a process of preparation
Assignee: GELGY CHEMICAL CORP
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Filing: 1969-09-29
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Granted: 1971-01-26
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Expires: 1989-09-29
Abstract
Abstract SUBSTITUTED 2-ANILINOPHENYLACETIC ACIDS, THEIR ESTERS AND SALTS HAVE DESIRABLE ABSORPTION PATTERNS FOR PROTECTING THE SKIN AGAINST THE IRRITATING EFFECT OF ULTRAVIOLET LIGHT. THE COMPOUNDS ARE ALSO ANTINFLAMMATORY AGENTS. TYPICAL EMBODIMENTS ARE 2-(2,6-DICHLOROANILINO)-PHENYLACETIC ACID, THE SODIUM SALT THEREOF AND THE METHYL ESTER THEREOF.
Inventors
- 👤 Alfred Sallmann
- 👤 Rudolf Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:24
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/30; C07D209/32; C07D209/34; C07D209/38
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |