Patent US3563228A successfully refreshed from Google Patents.
US3563228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming adherent films on animal tissue
Assignee: Individual
•
Filing: 1969-02-28
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Granted: 1971-02-16
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Expires: 1989-02-28
Abstract
Abstract Animal tissue, such as bruised skin, skin graft removal sites, corneas, and the like are coated with a protective layer of undenatured collagen by electrophoretic migration of collagen particles from a suspension thereof in contact with the tissue. The layer thus formed is adherent, and in general becomes a part of the animal treated.
Inventors
- 👤 Maurice Seiderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:57
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/20; A61N1/30; A61B; A61B17/00; A61B17/32; A61B90/00; A61F; A61F2/00; A61F2/02; A61F2/10; A61F2/105; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
12 words
The process in accordance with claim 1 wherein said collagen is mammalian.
Claim 2
Dependent Claim
14 words
The process in accordance with claim 1 wherein said collagen is beef tendon collagen.
Claim 3
Dependent Claim
27 words
The process in accordance with claim 1 wherein said collagen is present in the form of fibrils having a length of not to exceed about 0.6 mm.
Claim 4
Dependent Claim
13 words
The process in accordance with claim 1 wherein said tissue is dermal tissue.
Claim 5
Dependent Claim
13 words
The process in accordance with claim 1 wherein said tissue is corneal tissue.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |