US2598608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of collagenous materials
Assignee: Research Corp
•
Filing: 1946-06-11
•
Granted: 1952-05-27
•
Expires: 1966-06-11
Abstract
No abstract record available.
Inventors
- 👤 Torsti P Salo
- 👤 David F Waugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:29
CPC Classifications
D; D01; D01F; D01F4/00; A; A61; A61L; A61L15/00; A61L15/16; A61L15/40; A61L17/00; A61L17/06; A61L17/08; C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; D01D; D01D5/00; D01D5/06; D01D5/18; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN THE PROCESS OF CONVERTING A SWOLLEN MASS OF TENDON PIECES TO A GEL OF SOLVATED FIBRILS OF SUBSTANTIALLY PURE COLLAGEN FROM WHICH FILAMENTS MAY BE SPUN, THE STEP WHICH FILAMENTS ING THE SWOLLEN MASS WITH A WATER TO FORM A DILUTE SOL AND CENTRIFUGING THE DILUTE SOL PRIOR TO CONVERSION TO A GEL FOR SPINING.
Claim 2
Dependent Claim
56 words
IN THE PROCESS OF CONVERTING A SWOLLEN MASS OF TENDON PIECES TO A GEL OF SOLVATED FIBRILS OF SUBSTANTIALLY PURE COLLAGEN FROM WHICH FILAMENTS MAY BE SPUN, THE STEP WHICH FILAMENTS ING THE SWOLLEN MASS WITH A WATER TO FORM A DILUTE SOL AND CENTRIFUGING THE DILUTE SOL PRIOR TO CONVERSION TO A GEL FOR SPINING.
References Cited (Backward Citations)
US1712077A
Cited
US1999641A
Cited
US2114220A
Cited
US2056595A
Cited
US2039262A
Cited
US2058835A
Cited
GB422990A
Cited
US2046670A
Cited
GB464406A
Cited
GB471954A
Cited
US2267488A
Cited
US2167251A
Cited
US2337775A
Cited
US2461602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |