Patent US1757769A successfully refreshed from Google Patents.
Patent US3093440A successfully refreshed from Google Patents.
US3093440A
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Process for preparing collagenous material tanned with polyacrolein
Assignee: Johnson and Johnson
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Filing: 1961-07-05
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Granted: 1963-06-11
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Expires: 1981-07-05
Abstract
No abstract record available.
Inventors
- 👤 James W Bothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:49
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/22; A61L27/24; A61L17/00; A61L17/06; A61L17/08; C; C07; C07K; C07K14/00; C07K14/435; C07K14/78; A61F; A61F2310/00; A61F2310/00005; A61F2310/00365; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
COLLAGENOUS MATERIAL OF MAMMALIAN ORIGIN USEFUL FOR IMPLANTING IN A MAMMAL, HAVING ITS COLLAGEN FIBRILS PRESENT SUBSTANTIALLY IN THEIR NATURALLY PRODUCING RELATIONSHIP AND CONTAINING AT LEAST 80% COLLAGENOUS SOLIDS AND NOT OVER ABOUT 20% OF OTHER PROTEIN BASED ON THE WEIGHT OF SOLIDS THEREIN AND TANNED WITH POLYACROLEIN HAVING AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 20,000 TO ABOUT 500,000 SO THAT IT HAS INCREASED RESISTANCE TO BREAKDOWN BY NORMAL BODY PROCESSES.
References Cited (Backward Citations)
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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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |