US3787571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trichloroethanol and trifluoroethanol topical and percutaneous steroid adsorption promoters
Assignee: Alza Corp
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Filing: 1971-11-11
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Granted: 1974-01-22
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Expires: 1991-11-11
Abstract
Abstract DERMAL COMPOSITIONS ARE DISCLOSED WHICH COMPRISE TRICHLOROETHANOL OR TRIFLUOROETHANOL AS ONE COMPONENT OF A VEHICLE HAVING SOLUBILIZED THEREIN A DRUG OR OTHER BENEFICIAL CHEMICAL COMPOUND. ALSO DISCLOSED IS A METHOD FOR ADMINISTERING A DRUG OR OTHER BENEFICIAL CHEMICAL COMPOUND TO THE BODY WHICH COMPRISES CONTACTING THE SKIN WITH THE DRUG OR COMPOUND IN THE PRESENCE OF TRICHLOROETHANOL OR TRIFLUOROETHANOL WHIC ACTS AS AN ABSORPTION PROMOTER TO ENHANCE THE TOPICAL OR PERCUTANEOUS ABSORPTION OF THE ACTIVE DRUG OR COMPOUND.
Inventors
- 👤 T Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:53
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0014; A61K47/00; A61K47/06; A61K47/08; A61K47/10
Claims Analysis
Total Claims: 0
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |