US4916138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid dispersion composition of FR-900506 substance
Assignee: Astellas Pharma Inc
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Filing: 1988-07-25
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Granted: 1990-04-10
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Expires: 2008-07-25
Abstract
Abstract This invention relates to a solid dispersion composition comprising FR-900506 substance and water-soluble hydroxypropyl methylcellulose which is capable of dispersing the FR-900506 substance, the FR-900506 substance and hydroxypropyl methylcellulose being in the ratio of 1:0:1 to 1:20 by weight.
Inventors
- 👤 Yoshio Ueda
- 👤 Fumio Shimojo
- 👤 Yasuo Shimazaki
- 👤 Kazutake Kado
- 👤 Toshiyasu Honbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:31
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; C; C07; C07D; C07D498/00; C07D498/12; C07D498/18; A61K31/44; A61K31/445; A61K9/00; A61K9/14; A61K9/141; A61K9/146; A61P; A61P37/00; A61P37/02; A61P37/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
35 words
A solid dispersion composition comprising FR-900506 substance and water-soluble hydroxypropyl methylcellulose which is capable of dispersing the FR-900506 substance, the FR-900506 substance and hydroxypropyl methylcellulose being in the ratio of 1:0.1 to 1:20 by weight.
Claim 2
Dependent Claim
35 words
A solid dispersion composition comprising FR-900506 substance and water-soluble hydroxypropyl methylcellulose which is capable of dispersing the FR-900506 substance, the FR-900506 substance and hydroxypropyl methylcellulose being in the ratio of 1:0.1 to 1:20 by weight.
Claim 3
Dependent Claim
25 words
The solid dispersion composition of claim 1, in which the FR-900506 substance and hydroxypropyl methylcellulose are in the ratio of 1:0.5 to 1:5 by weight.
Claim 4
Dependent Claim
23 words
The solid dispersion composition of claim 2, in which the FR-900506 substance and hydroxypropyl methylcellulose are in the ratio of 1:1 by weight.
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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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |