US3314861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for solubilizing insoluble collagen fibers
Assignee: Individual
•
Filing: 1965-11-18
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Granted: 1967-04-18
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Expires: 1985-11-18
Abstract
No abstract record available.
Inventors
- 👤 Fujii Tadahiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
C; C09; C09H; C09H5/00; C09H1/00; C09H1/04; D; D01; D01C; D01C3/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839; Y10S435/886; Y10S435/897; Y10S435/911; Y10S435/913; Y10S435/917; Y10S435/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD FOR CONVERTING INSOLUBLE COLLAGEN INTO A FIBER RECONSTITUTABLE FORM IN AN AQUEOUS SOLUTION WHICH COMPRISES TREATING INSOLUBLE COLLAGEN WITH A PROTEOLYTIC ENZYME OTHER THAN COLLAGENASE WHICH WILL HYDROLYZE THE TELOPEPTIDE GROUP OF COLLAGEN AND WHICH IS ACTIVE IN A PH RANGE OF ABOUT 2 TO 10 IN THE JPRESENCE OF AN AQUEOUS SOLUTION OF AT LEAST ONE WATER-SOLUBLE CATIONIC SURFACTANT SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Independent Claim
68 words
A METHOD FOR CONVERTING INSOLUBLE COLLAGEN INTO A FIBER RECONSTITUTABLE FORM IN AN AQUEOUS SOLUTION WHICH COMPRISES TREATING INSOLUBLE COLLAGEN WITH A PROTEOLYTIC ENZYME OTHER THAN COLLAGENASE WHICH WILL HYDROLYZE THE TELOPEPTIDE GROUP OF COLLAGEN AND WHICH IS ACTIVE IN A PH RANGE OF ABOUT 2 TO 10 IN THE JPRESENCE OF AN AQUEOUS SOLUTION OF AT LEAST ONE WATER-SOLUBLE CATIONIC SURFACTANT SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US3121049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |