Patent US4533358A successfully refreshed from Google Patents.
US4533358A
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US
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Process for producing a shaped product of collagen by syneresis
Assignee: Nitta Gelatin Inc
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Filing: 1984-07-20
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Granted: 1985-08-06
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Expires: 2004-07-20
Abstract
Abstract A process for producing a shaped product of collagen by a wet or electrochemical method from a pasty composition comprising a collagenous substance or a mixture thereof with another high molecular substance. The composition or a product shaped therefrom is treated with a crosslinking agent, and the shaped product is frozen, and thawed.
Inventors
- 👤 Yoshimasa Yoden
- 👤 Tsuneo Okuda
- 👤 Eiji Fuchigami
- 👤 Toshihiro Kuwabara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; C08H; C08H1/00; C08H1/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
In a process for producing a shaped product of collagen by a wet or electrochemical method from a pasty composition comprising a collagenous substance or a mixture thereof with another high molecular substance, the improvement which comprises treating said composition with a crosslinking agent when said composition is shaped, freezing a shaped product and thawing it.
Claim 2
Dependent Claim
56 words
In a process for producing a shaped product of collagen by a wet or electrochemical method from a pasty composition comprising a collagenous substance or a mixture thereof with another high molecular substance, the improvement which comprises treating said composition with a crosslinking agent when said composition is shaped, freezing a shaped product and thawing it.
Claim 3
Dependent Claim
55 words
In a process for producing a shaped product of collagen by a wet or electrochemical method from a pasty composition comprising a collagenous substance or a mixture thereof with another high molecular substance, the improvement which comprises treating with a crosslinking agent a product shaped from said composition, freezing said shaped product and thawing it.
Claim 4
Dependent Claim
55 words
In a process for producing a shaped product of collagen by a wet or electrochemical method from a pasty composition comprising a collagenous substance or a mixture thereof with another high molecular substance, the improvement which comprises treating with a crosslinking agent a product shaped from said composition, freezing said shaped product and thawing it.
Claim 5
Dependent Claim
22 words
A process as set forth in claim 1, wherein said composition comprises collagen fibers obtained by dividing finely connective tissue containing collagen.
Claim 6
Dependent Claim
15 words
A process as set forth in claim 3, wherein said composition further contains solubilized collagen.
Claim 7
Dependent Claim
37 words
A process as set forth in claim 3, wherein said composition further contains at least one substance selected from the group consisting of natural and synthetic fibers, proteins, seaweeds extracts, polysaccharides and synthetic water-soluble high molecular substances.
Claim 8
Dependent Claim
22 words
A process as set forth in claim 2, wherein said composition comprises collagen fibers obtained by dividing finely connective tissue containing collagen.
Claim 9
Dependent Claim
37 words
A process as set forth in claim 4, wherein said composition further contains at least one substance selected from the group consisting of natural and synthetic fibers, proteins, seaweed extracts, polysaccharides and synthetic water-soluble high molecular substances.
Claim 10
Dependent Claim
32 words
A process as set forth in claim 1 or claim 2 wherein said composition is shaped and frozen at a temperature in the range of -5° C. to -40° C. and thawed.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |