US4623394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gradually disintegrable molded article
Assignee: Hayashibara Seibutsu Kagaku Kenkyujo KK
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Filing: 1985-04-03
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Granted: 1986-11-18
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Expires: 2005-04-03
Abstract
Abstract A novel molded article exhibiting a gradual disintegration effect is prepared with pullulan. The effect is imparted by incorporating heteromannan into a pullulan molded article in an amount not exceeding the weight of the pullulan used. Galactomannans (e.g. guar gum, tara gum, and locust bean gum) and glucomannans (e.g. konjak mannan) are feasible as the heteromannan. The molded article is advantageously usable for industrial materials, pharmaceuticals, consumers' products, etc.
Inventors
- 👤 Satoshi Nakamura
- 👤 Hiromi Hijiya
- 👤 Toshio Miyake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:02
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; C; C08; C08L; C08L5/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
In a molded article, the composition of which comprises pullulan, the improvement whereby the gradual disintegration properties of the article are improved, wherein the composition of the article consists essentially of a combination of pullulan and at least one heteromannan, the amount of heteromannan being, based on the dry solids, 1 to 100% of the pullulan.
Claim 2
Dependent Claim
56 words
In a molded article, the composition of which comprises pullulan, the improvement whereby the gradual disintegration properties of the article are improved, wherein the composition of the article consists essentially of a combination of pullulan and at least one heteromannan, the amount of heteromannan being, based on the dry solids, 1 to 100% of the pullulan.
Claim 3
Dependent Claim
14 words
The molded article in accordance with claim 1, wherein the heteromannan is a galactomannan.
Claim 4
Dependent Claim
14 words
The molded article in accordance with claim 1, wherein the heteromannan is a glucomannan.
Claim 5
Dependent Claim
32 words
The molded article in accordance with claim 1, wherein the heteromannan is a member selected from the group consisting of guar gum, tara gum, locust bean gum, konjak mannan, and mixtures thereof.
Claim 6
Dependent Claim
23 words
The molded article in accordance with claim 1, wherein the weight of the heteromannan solid is less than that of the pullulan solid.
Claim 7
Dependent Claim
34 words
The molded article in accordance with claim 1, which is a member selected from the group consisting of granule, fiber, filament, rod, gauze, cloth, film, sheet, paper, coating membrane, tube, capsule, tablet, and sponge.
Claim 8
Dependent Claim
27 words
The molded article in accordance with claim 5 wherein the heteromannan is, based on the dry solids basis, present in the range of 1-80% of the pullulan.
References Cited (Backward Citations)
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US3784390A
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GB1374199A
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US3873333A
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US3932192A
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US4257816A
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |