Patent US3049837A successfully refreshed from Google Patents.
Patent US2919998A successfully refreshed from Google Patents.
US2919998A
Expired / Lapsed
US
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Collagen article and the manufacture thereof
Assignee: Ethicon Inc
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Filing: 1957-11-07
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Granted: 1960-01-05
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Expires: 1977-11-07
Abstract
No abstract record available.
Inventors
- 👤 Howard B Klevens
- 👤 Nichols Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/32; A61L15/325; C08J2389/00; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/84
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
IN A PROCESS FOR THE EXTRUSION OF A COLLAGEN DISPERSION TO FORM A SHAPED ARTICLE, THE IMPROVEMENT WHICH COMPRISES SWELLING AND DISPERSING COLLAGEN FIBERS DERIVED FROM ANIMAL TENDONS IN AN AQUEOUS SOLUTION OF A PERFLUORO ACID HAVING THE FORMULA CF3(CF2)NCOOH, IN WHICH N IS A WHOLE INTEGER SMALLER THAN 5.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |