US3093439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing tanned collagenous material with dialdehyde starch
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
2026-10-22 23:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/062; A61L; A61L27/00; A61L27/14; A61L27/22; A61L27/24; A61F2310/00; A61F2310/00005; A61F2310/00365; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR PREPARING TANNED COLLAGENOUS MATERIAL OF MAMMALIAN ORIGIN USEFUL FOR IMPLANTING IN A MAMMAL WHICH COMPRISES IMMERSING COLLAGENOUS MATERIAL OF MAMMALIAN ORIGIN WHICH CONTAINS AT LEAST 80% BY WEIGHT COLLAGENOUS SOLIDS IN AN AQUEOUS SOLUTION OF PERIODATE OXIDIZED STARCH CONTAINING ABOUT 50 TO ABOUT 100% DIALDEHYDE STARCH CALCULATED ON AN ANHYDROUS BASIS HAVING A CONCENTRATION FROM ABOUT 0.5 TO ABOUT 10% (WEIGHT/ VOLUME) AND A PH WITHIN THE RANGE OF ABOUT 7.5 TO ABOUT 12 FOR SUFFICIENT TIME TO BRING THE SHRINKAGE TEMPERATURE OF THE TANNED COLLAGEN TO FROM AOUT 84*C. TO ABOUT 90*C.; REMOVING THE TANNED COLLAGEN FROM THE TANNING SOLUTION AND WASHING THE TANNED COLLAGEN WITH DISTILLED WATER UNTIL EXCESS TANNING AGENT IS REMOVED THEREFROM.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PREPARING TANNED COLLAGENOUS MATERIAL OF MAMMALIAN ORIGIN USEFUL FOR IMPLANTING IN A MAMMAL WHICH COMPRISES IMMERSING COLLAGENOUS MATERIAL OF MAMMALIAN ORIGIN WHICH CONTAINS AT LEAST 80% BY WEIGHT COLLAGENOUS SOLIDS IN AN AQUEOUS SOLUTION OF PERIODATE OXIDIZED STARCH CONTAINING ABOUT 50 TO ABOUT 100% DIALDEHYDE STARCH CALCULATED ON AN ANHYDROUS BASIS HAVING A CONCENTRATION FROM ABOUT 0.5 TO ABOUT 10% (WEIGHT/ VOLUME) AND A PH WITHIN THE RANGE OF ABOUT 7.5 TO ABOUT 12 FOR SUFFICIENT TIME TO BRING THE SHRINKAGE TEMPERATURE OF THE TANNED COLLAGEN TO FROM AOUT 84*C. TO ABOUT 90*C.; REMOVING THE TANNED COLLAGEN FROM THE TANNING SOLUTION AND WASHING THE TANNED COLLAGEN WITH DISTILLED WATER UNTIL EXCESS TANNING AGENT IS REMOVED THEREFROM.
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) | 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 |