US4756910A
Expired / Lapsed
US
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Adriamycin-entrapping liposome preparation
Assignee: VITAMIN KENKYUSYO KK
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Filing: 1986-11-25
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Granted: 1988-07-12
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Expires: 2006-11-25
Abstract
Abstract A liposome preparation entrapping adriamycin as the effective component, whose constitutional lipids are phosphatidylcholine, cholesterol, and sulfatide in a specific molar ratio.
Inventors
- 👤 Kunio Yagi
- 👤 Nakao Kojma
- 👤 Makoto Takano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:30
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K9/00; A61K9/10; A61K9/127; A61K9/1271; A61P; A61P31/00; A61P31/04; A61P35/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
An adriamycin-entrapping liposome preparation, comprising lipidic multi-lamellar vesicles containing egg yolk-derived phosphatidylcholine, cholesterol and sulfatide in a molar ratio of 5:4:1.
Claim 2
Dependent Claim
21 words
An adriamycin-entrapping liposome preparation, comprising lipidic multi-lamellar vesicles containing egg yolk-derived phosphatidylcholine, cholesterol and sulfatide in a molar ratio of 5:4:1.
References Cited (Backward Citations)
WO1985000968A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |