US4066787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized prostaglandin composition and the process for the preparation thereof
Assignee: Astellas Pharma Inc
•
Filing: 1977-05-18
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Granted: 1978-01-03
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Expires: 1997-05-18
Abstract
Abstract A dried and stabilized prostaglandin composition containing a prostaglandin E group compound with calcium lactate and/or amylopectin, and a stabilized pharmaceutical preparation for practical administration prepared from the said composition.
Inventors
- 👤 Kiyoshi Okazaki
- 👤 Hiroitsu Kawada
- 👤 Hidemi Shimizu
- 👤 Tadayoshi Ohmura
- 👤 Jun Sekino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:38
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/557; A61K47/00; A61K47/06; A61K47/08; A61K47/12; A61K47/30; A61K47/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
24 words
A stabilized prostaglandin composition comprising an active prostaglandin E group compound with an effective amount of calcium lactate and/or an effective amount of amylopectin.
Claim 2
Dependent Claim
24 words
A stabilized prostaglandin composition comprising an active prostaglandin E group compound with an effective amount of calcium lactate and/or an effective amount of amylopectin.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the prostaglandin E group compound is 16(S)-methyl-20-methoxy prostaglandin E 2 .
Claim 4
Dependent Claim
17 words
The composition of claim 1 wherein the prostaglandin E group compound is 4(R),16(R)-dimethyl prostaglandin E 2 .
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein the prostaglandin E group compound is 4(S),16(R)-dimethyl prostaglandin E 2 .
Claim 6
Dependent Claim
17 words
The composition of claim 1 wherein the prostaglandin E group compound is 4(R),16(S)-dimethyl prostaglandin E 2 .
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein the prostaglandin E group compound is 4(S),16(S)-dimethyl prostaglandin E 2 .
Claim 8
Dependent Claim
30 words
The composition of claim 1 wherein calcium lactate is 2-2000 parts by weight and/or amylopectin is 2-2000 parts by weight to one part by weight of prostaglandin E group compound.
Claim 9
Dependent Claim
23 words
A pharmaceutically acceptable preparation comprising the stabilized prostaglandin composition as claimed in claim 1 and pharmaceutically acceptable ingredients or additives for practical administration.
Claim 10
Dependent Claim
40 words
Process for the preparation of a stabilized prostaglandin composition which comprises dissolving a prostaglandin E group compound in water, organic solvent or a mixture thereof together with calcium lactate and/or amylopectin, and drying the solution to form a dry powder.
Claim 11
Dependent Claim
40 words
Process for the preparation of a stabilized prostaglandin composition which comprises dissolving a prostaglandin E group compound in water, organic solvent or a mixture thereof together with calcium lactate and/or amylopectin, and drying the solution to form a dry powder.
References Cited (Backward Citations)
US3954787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |