US3123653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a tubular collagen casing
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/006; F26B21/008; A; A22; A22C; A22C13/00; A22C13/0003; A22C13/0006; A22C13/0013; A22C13/0016; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/88; B29C48/919; D; D01; D01F; D01F4/00; F26B15/00; F26B15/10; F26B15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN THE METHOD OF PRODUCING A TUBULAR COLLAGEN CASING THE STEPS OF: EXTRUDING A CONTINUOUS, FRAGILE TUBULAR BODY FROM A FLUID MASS OF SWOLLEN COLLAGEN FIBRILS MADE BY ACID SWELLING OF UNLIMITED, DEHAIRED ANIMAL HIDE HAVING A COLLAGEN SOLIDS, CONTENT IN THE RANGE OF MORE THAN 2.5% AND LESS THAN 6% BY WEIGHT; APPLYING A COAGULANT TO SAID TUBULAR BODY; HARDENING THE COAGULATED BODY; WASHING COAGULANT FROM THE HARDENED BODY; MAINTAINING SUBSTANTIALLY THE SAME WALL THICKNESS IN SAID TUBULAR BODY THROUGHOUT THE AFORESAID STEPS OF
Claim 2
Dependent Claim
85 words
IN THE METHOD OF PRODUCING A TUBULAR COLLAGEN CASING THE STEPS OF: EXTRUDING A CONTINUOUS, FRAGILE TUBULAR BODY FROM A FLUID MASS OF SWOLLEN COLLAGEN FIBRILS MADE BY ACID SWELLING OF UNLIMITED, DEHAIRED ANIMAL HIDE HAVING A COLLAGEN SOLIDS, CONTENT IN THE RANGE OF MORE THAN 2.5% AND LESS THAN 6% BY WEIGHT; APPLYING A COAGULANT TO SAID TUBULAR BODY; HARDENING THE COAGULATED BODY; WASHING COAGULANT FROM THE HARDENED BODY; MAINTAINING SUBSTANTIALLY THE SAME WALL THICKNESS IN SAID TUBULAR BODY THROUGHOUT THE AFORESAID STEPS OF
References Cited (Backward Citations)
US1612508A
Cited
US1871100A
Cited
US2043172A
Cited
US2195930A
Cited
US2307614A
Cited
US2254203A
Cited
US2275348A
Cited
US2351208A
Cited
US2271932A
Cited
US2979767A
Cited
US3071477A
Cited
US2999756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |