US4818291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silk-fibroin and human-fibrinogen adhesive composition
Assignee: Ajinomoto Co Inc
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Filing: 1987-12-10
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Granted: 1989-04-04
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Expires: 2007-12-10
Abstract
Abstract The present invention provides a novel adhesive which contains a mixture of human-fibrinogen and silk-fibroin and which is suitable especially for use in surgery. The mixing ratio of silk-fibroin to human-fibrinogen is 5 to 90, preferably 20 to 70% by weight.
Inventors
- 👤 Makoto Iwatsuki
- 👤 Toshio Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:37
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/10; A61L24/106; A61L24/043; C; C09; C09J; C09J189/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
9 words
An adhesive comprising a mixture of human-fibrinogen and silk-fibroin.
Claim 2
Dependent Claim
9 words
An adhesive comprising a mixture of human-fibrinogen and silk-fibroin.
Claim 3
Dependent Claim
21 words
An adhesive according to claim 1, wherein the content of said silk-fibroin in said mixture is 5 to 90% by weight.
Claim 4
Dependent Claim
21 words
An adhesive according to claim 1, wherein said silk-fibroin is obtained from domestic silk or wild silk, or a mixture thereof.
Claim 5
Dependent Claim
18 words
An adhesive according to claim 1, which is sterile, so that it is applicable as a surgical adhesive.
References Cited (Backward Citations)
US4414976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |