US4764604B1
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US
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US4764604B1 - - Google Patents
Assignee: Janssen Pharmaceutica NV
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Filing: 1986-02-27
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Granted: 1990-06-12
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Expires: 2006-02-27
Abstract
Abstract Novel gamma -cyclodextrin derivatives which are gamma -cyclodextrin substituted with C1-C6 alkyl, hydroxy C1-C6 alkyl, carboxy C1-C6 alkyl or C1-C6 alkyloxycarbonylC1-C6 alkyl or mixed ethers thereof and their preparation. Compositions comprising such cyclodextrin derivatives and an active ingredient which is preferably a drug and the preparation of such compositions.
Inventors
- 👤 W W Mueller Bernd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:29
CPC Classifications
C; C07; C07H; C07H3/00; C07H3/06; B; B82; B82Y; B82Y5/00; A; A61; A61K; A61K47/00; A61K47/50; A61K47/69; A61K47/6949; A61K47/6951; C08; C08B; C08B37/00; C08B37/0006; C08B37/0009; C08B37/0012
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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |