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US3758660A
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Method of forming structures from microcrystalline collagen
Assignee: Avicon Inc
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Filing: 1971-10-15
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Granted: 1973-09-11
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Expires: 1991-10-15
Abstract
Abstract Shaped structures of planar, tubular and molded threedimensional forms are formed from concentrated dispersions of a water-insoluble, ionizable, partial salt of collagen and a small amount of water.
Inventors
- 👤 O Battista
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:21
CPC Classifications
D; D01; D01F; D01F4/00; A; A61; A61L; A61L17/00; A61L17/06; A61L17/08; C; C08; C08L; C08L89/00; C08L89/04; C08L89/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
12 words
The method as defined in claim 1 wherein the plasticizer is glycerol.
Claim 2
Dependent Claim
60 words
The method as defined in claim 1 wherein the composition includes fibers in an amount up to about 25 percent based on the weight of the partial salt of collagen, the fibers being selected from the group consisting of cellulose esters, cellulose ethers, polyesters, nylon, polytetrafluoroethylene, polyphenylene ethers, polyolefins, polycarbonates, cellulose, regenerated cellulose, asbestos, collagen fbers, amylose fibers and chitin.
Claim 3
Dependent Claim
13 words
The method as defined in claim 1 wherein the fibers are collagen fibers.
Claim 4
Dependent Claim
32 words
The method as defined in claim 1 wherein the composition includes colloidal microcrystalline nylon in an amount up to about 25 percent based on the weight of the partial salt of collagen.
Claim 5
Dependent Claim
46 words
The method as defined in claim 1 wherein the composition includes a cross-linking agent selected from the group consisting of urea-formaldehyde precondensate, melamine-formaldehyde precondensate, formaldehyde, glyoxal, acetaldehyde, glutaraldehyde, potassium alum, chrome alum, iron alum, basic aluminum acetate, cadmium acetate, copper nitrate, barium hydroxide and water-soluble diisocyanates.
Claim 6
Dependent Claim
31 words
The method as defined in claim 1 wherein the heated composition is placed in a mold cavity and is pressed in heated state in the mold cavity into the structural configuration.
Claim 7
Dependent Claim
25 words
The method as defined in claim 1 wherein the heated composition is pressed in heated state through a shaped orifice into the ambient room atmosphere.
Claim 8
Dependent Claim
14 words
The method as defined in claim 8 wherein the structure is a continuous filament.
Claim 9
Dependent Claim
14 words
The method as defined in claim 8 wherein the structure is a continuous sheet.
Claim 10
Dependent Claim
47 words
The method as defined in claim 1 wherein the composition contains at least 45 percent of the partial salt of collagen, the composition is placed in a mold cavity, is heated to a temperature of about 125*C. and is pressed in heated state in the mold cavity.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |