US3075961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reconstitution of native collagen fiber from acid precursor gelatin
Assignee: Armour and Co
•
Filing: 1960-04-05
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Granted: 1963-01-29
•
Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 Veis Arthur
- 👤 Cohen Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
D; D01; D01F; D01F4/00; A; A61; A61L; A61L17/00; A61L17/06; A61L17/08; C; C09; C09H; C09H1/00; C09H1/04; C09H7/00; Y; Y10; Y10S; Y10S128/00; Y10S128/08; Y10S530/00; Y10S530/827; Y10S530/842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS OF PREPARING RECONSTITUTED COLLAGEN FIBERS, CHARACTERIZED BY EXTRACTING NATIVE COLLAGEN IN WATER AT A TEMPERATURE WITHIN THE RANGE FROM 50 TO 80*C. AND AT AN ACIDIC PH TO OBTAIN HIGH MOLECULAR WEIGHT CROSSLINKED ACID-PRECURSOR GELATIN, AND PRECIPITATING A SUBSTANTIAL PORTION OF SAID ACID-PRECURSOR GEELATINE FROM AN ACIDIC AQUEOUS SOLUTION THEREOF TO OBTAIN COLLAGEN FIBERS HAVING THE TYPICAL 640 A. BANDING OF NATIVE COLLAGEN.
Claim 2
Dependent Claim
65 words
THE PROCESS OF PREPARING RECONSTITUTED COLLAGEN FIBERS, CHARACTERIZED BY EXTRACTING NATIVE COLLAGEN IN WATER AT A TEMPERATURE WITHIN THE RANGE FROM 50 TO 80*C. AND AT AN ACIDIC PH TO OBTAIN HIGH MOLECULAR WEIGHT CROSSLINKED ACID-PRECURSOR GELATIN, AND PRECIPITATING A SUBSTANTIAL PORTION OF SAID ACID-PRECURSOR GEELATINE FROM AN ACIDIC AQUEOUS SOLUTION THEREOF TO OBTAIN COLLAGEN FIBERS HAVING THE TYPICAL 640 A. BANDING OF NATIVE COLLAGEN.
References Cited (Backward Citations)
US2935413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |