US5091171B2
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Amphoteric compositions and polymeric forms of alpha hydroxyacids and their therapeutic use
Assignee: Fleet Capital Corp
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Filing: 1989-08-15
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Granted: 1997-07-15
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Expires: 2009-08-15
Abstract
Abstract A therapeutic composition for topical treatment of cosmetic conditions or dermatological disorders comprising dimeric or polymeric forms of hydroxyacids which may be present as a free acid, ester or in a salt form with an organic base or inorganic alkali. The hydroxyacids may be incorporated in an amphoteric or pseudoamphoteric system.
Inventors
- 👤 Ruey J Yu
- 👤 Van Eugene J Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:09
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/008; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/191; A61K31/192; A61K31/194; A61K31/195; A61K31/20; A61K31/202; A61K31/33; A61K31/335; A61K31/365; A61K31/366; A61K31/395; A61K31/40; A61K31/403; A61K31/404; A61K31/405; A61K31/41; A61K31/415; A61K31/435; A61K31/44; A61K31/445; A61K31/66; A61K31/70; A61K31/7042; A61K31/7048; A61K31/715; A61K31/74; A61K31/765; A61K45/00; A61K45/06; A61K47/00; A61K47/06; A61K47/08; A61K47/12; A61K47/14; A61K47/16; A61K47/18; A61K47/183; A61K47/20; A61K47/24; A61K47/26; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61K8/27; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/36; A61K8/362; A61K8/365; A61K8/37; A61K8/375; A61K8/40; A61K8/41; A61K8/416; A61K8/42; A61K8/43; A61K8/44; A61K8/49; A61K8/4906; A61K8/4913; A61K8/494; A61K8/4953; A61K8/4973; A61K8/55; A61K8/553; A61K8/58; A61K8/585; A61K8/60; A61K8/63; A61K8/64; A61K8/67; A61K8/671; A61K8/673; A61K8/675; A61K8/678; A61K8/68; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61K8/84; A61K8/85; A61K9/00; A61K9/0012; A61K9/0014; A61P; A61P17/00; A61Q15/00; A61Q17/00; A61Q17/04; A61Q19/007; A61Q19/02; A61Q19/08; A61Q19/10; A61Q5/00; A61Q5/006; A61Q5/02; A61Q7/00; B; B24; B24D; B24D11/00; B24D11/02; B24D18/00; A61Q17/005
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-14 | 2001-01-13 | 2001-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-14 | 2005-01-13 | 2005-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-14 | 2009-01-13 | 2009-07-15 | $7700.00 | Window Closed / Lapsed |