US4096282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collagen compositions
Assignee: Union Carbide Corp
•
Filing: 1977-01-03
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Granted: 1978-06-20
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Expires: 1997-01-03
Abstract
Abstract Improved collagen compositions having incorporated therein relatively small amounts of propylene glycol alginate.
Inventors
- 👤 Thomas Engel Higgins
- 👤 Camilla Brems Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:21
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
33 words
A homogeneous formable acidic collagen composition having uniformly incorporated therein from about 0.2% by weight up to about 5% by weight based on the dry solids content thereof of a propylene glycol alginate.
Claim 2
Dependent Claim
33 words
A homogeneous formable acidic collagen composition having uniformly incorporated therein from about 0.2% by weight up to about 5% by weight based on the dry solids content thereof of a propylene glycol alginate.
Claim 3
Dependent Claim
26 words
The collagen composition of claim 1 wherein said collagen composition contains about 3% by weight of the dry solids content thereof of a propylene glycol alginate.
Claim 4
Dependent Claim
18 words
The collagen composition of claim 1 wherein said composition contains at least about 6% by weight collagen solids.
Claim 5
Dependent Claim
22 words
The collagen composition of claim 1 wherein said composition contains about 5% to 30% non-collagenous fibers by weight of dry solids content.
Claim 6
Dependent Claim
28 words
A collagenous tubular food casing having uniformly incorporated therein at least about 0.1% by weight to about 3.0% by weight of said casing of a propylene glycol alginate.
Claim 7
Dependent Claim
28 words
A collagenous tubular food casing having uniformly incorporated therein at least about 0.1% by weight to about 3.0% by weight of said casing of a propylene glycol alginate.
Claim 8
Dependent Claim
25 words
The tubular casing of claim 5 having additionally uniformly incorporated therein from about 3.0 to about 19% by weight of said casing of non-collagenous fibers.
Claim 9
Dependent Claim
23 words
The tubular casing of claim 5 having uniformly incorporated therein between about 0.6 and about 1.9% by weight of a propylene glycol alginate.
Claim 10
Independent Claim
55 words
A method of preparing a formable acidic collagen composition suitable for use in preparing a shaped collagen structure including the step of uniformly incorporating into a composition of swollen collagen a propylene glycol alginate in an amount of from about 0.2 to 5% by weight based on the dry solids content of said collagen composition.
Claim 11
Independent Claim
55 words
A method of preparing a formable acidic collagen composition suitable for use in preparing a shaped collagen structure including the step of uniformly incorporating into a composition of swollen collagen a propylene glycol alginate in an amount of from about 0.2 to 5% by weight based on the dry solids content of said collagen composition.
Claim 12
Dependent Claim
21 words
A method as claimed in claim 8 wherein said collagen composition comprises at least about 6% by weight of collagen solids.
Claim 13
Dependent Claim
25 words
A method as claimed in claim 8 wherein about 3% by weight of dry solids of propylene glycol alginate is incorporated in said collagen composition.
Claim 14
Independent Claim
94 words
A method of preparing a formable collagen composition suitable for use in preparing a shaped collagen structure including the steps of: (a) preparing a viscous aqueous dispersion of non-collagenous fibers; (b) preparing a comminuted acid-swollen collagen mass; and then (c) admixing said aqueous fiber-dispersion and a propylene glycol alginate with said acid-swollen collagen mass so that from about 0.2% to about 5% by weight of the propylene glycol alginate based on the solids content of said collagen admixture is incorporated in the collagen composition and then thoroughly mixing until a uniform admixture is obtained.
Claim 15
Independent Claim
94 words
A method of preparing a formable collagen composition suitable for use in preparing a shaped collagen structure including the steps of: (a) preparing a viscous aqueous dispersion of non-collagenous fibers; (b) preparing a comminuted acid-swollen collagen mass; and then (c) admixing said aqueous fiber-dispersion and a propylene glycol alginate with said acid-swollen collagen mass so that from about 0.2% to about 5% by weight of the propylene glycol alginate based on the solids content of said collagen admixture is incorporated in the collagen composition and then thoroughly mixing until a uniform admixture is obtained.
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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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |