Patent US4339463A successfully refreshed from Google Patents.
US4339463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enterosoluble hard-capsulated medicaments
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1980-07-16
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Granted: 1982-07-13
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Expires: 2000-07-16
Abstract
Abstract The invention provides a novel means for overcoming the problem of undue and irregular delay in the exhibition of the effect of medicine when a patient is administrated with an enterosoluble hard-capsulated medicament. The unexpected discovery that the key parameter ruling the smooth transfer of an enterosoluble capsule from the stomach to the intestinal canals is the overall specific gravity of the capsule has led to the establishment of the invention which proposes an enterosoluble hard-capsulated medicament having an overall specific gravity of at least 1.05 or, preferably, at least 1.10.
Inventors
- 👤 Yasushi Takagishi
- 👤 Yoshio Doi
- 👤 Noboru Hoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:47
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/4841; A61K9/4858; A61K9/4816; A61K9/485
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A weighted, enterosoluble, mixed acidic succinyl and aliphatic monoacyl ester of an alkyl and hydroxylalkyl substituted cellulose ether coated and sealed hard gelatin coated two-piece capsule shell-encapsulated medicament suspended in a material selected from the group consisting of sesame oil, olive oil, soybean oil, rapeseed oil, cottonseed oil, linseed oil, castor oil, rice-bran oil, camellia oil, coconut oil, peanut oil, corn oil, poppy oil, cacao butter, cinnamon butter, laurin, beef tallow, hog fat, wool fat, products obtained from said oils and fats by hydrogenation, carboxylic acidic exchange or acetylation splitting and esters of glycerine with a carboxylic acid having from 6 to 30 carbon atoms in a molecule; said capsule having the usual semi-spherical cap ends of the capsule shells flattened so that the effective volume of the capsule is reduced and being weighted with a material selected from the group consisting of barium sulfate, calcium dihydrogenphosphate, iron oxide, titanium dioxide, calcium sulfate, and platinum, either in the capsule shell or in the capsule fill and having an overall specific gravity of at least 1.05.
Claim 2
Dependent Claim
175 words
A weighted, enterosoluble, mixed acidic succinyl and aliphatic monoacyl ester of an alkyl and hydroxylalkyl substituted cellulose ether coated and sealed hard gelatin coated two-piece capsule shell-encapsulated medicament suspended in a material selected from the group consisting of sesame oil, olive oil, soybean oil, rapeseed oil, cottonseed oil, linseed oil, castor oil, rice-bran oil, camellia oil, coconut oil, peanut oil, corn oil, poppy oil, cacao butter, cinnamon butter, laurin, beef tallow, hog fat, wool fat, products obtained from said oils and fats by hydrogenation, carboxylic acidic exchange or acetylation splitting and esters of glycerine with a carboxylic acid having from 6 to 30 carbon atoms in a molecule; said capsule having the usual semi-spherical cap ends of the capsule shells flattened so that the effective volume of the capsule is reduced and being weighted with a material selected from the group consisting of barium sulfate, calcium dihydrogenphosphate, iron oxide, titanium dioxide, calcium sulfate, and platinum, either in the capsule shell or in the capsule fill and having an overall specific gravity of at least 1.05.
Claim 3
Dependent Claim
82 words
A barium sulfate weighted enterosoluble mixed acidic succinyl and aliphatic monoacyl ester of an alkyl and hydroxyalkyl substituted cellulose ether coated and sealed hard gelatin telescoping two-piece capsule shell-encapsulated medicament suspended in sesame oil and having the usual semispherical cap ends of the capsule shells flattened so that the effective volume of the capsule is reduced, and being weighted with barium sulfate either in the capsule shell or in the capsule fill and having an overall specific gravity of at least 1.05.
Claim 4
Dependent Claim
82 words
A barium sulfate weighted enterosoluble mixed acidic succinyl and aliphatic monoacyl ester of an alkyl and hydroxyalkyl substituted cellulose ether coated and sealed hard gelatin telescoping two-piece capsule shell-encapsulated medicament suspended in sesame oil and having the usual semispherical cap ends of the capsule shells flattened so that the effective volume of the capsule is reduced, and being weighted with barium sulfate either in the capsule shell or in the capsule fill and having an overall specific gravity of at least 1.05.
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |