US3296000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped regenerated cellulose products having bacteriostatic properties
Assignee: FMC Corp
•
Filing: 1966-04-06
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Granted: 1967-01-03
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Expires: 1986-04-06
Abstract
No abstract record available.
Inventors
- 👤 Gregory C Bockno
- 👤 Joseph W Schappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
D; D06; D06M; D06M16/00; A; A01; A01N; A01N37/00; A01N37/18; A01N37/22; A61; A61L; A61L15/00; A61L15/16; A61L15/20; A61L15/42; A61L15/46; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE WHICH HAVE BACTERIOSTATIC PROPERTIES WHICH INCLUDES THE STEPS OF EXTRUDING THROUGH A SHAPING ORIFICE AND INTO AN AQUEOUS ACIDIC COAGULATING SOLUTION A VISCOSE SOLUTION CONTAINING FROM ABOUT 4% TO 10%, BY WEIGHT, OF CELLULOSE HAVING INCORPORATED THEREIN NOT LESS THAN 0.25%, BY WEIGHT BASED ON SAID CELLULOSE, OF 3,4,4''-TRICHLOROCARBANILIDE IN PARTICULATE FORM TO IMPART BACTERIOSTATIC PROPERTIES TO A DRY-SHAPED PRODUCT OF REGENERATED CELLULOSE PREPARED FROM SAID SOLUTION, SUBJECTING THE THUS EXTRUDED SOLUTION TO THE ACTION OF THE AQUEOUS ACID SOLUTION UNTIL THE EXTRUDED SOLUTION IS COAGULATED, CONVERTING THE COAGULATED SOLUTION TO REGENERATED CELLULOSE AND SUBSEQUENTLY DRYING THE SHAPED PRODUCTS OF REGENERATED CELLULOSE.
Claim 2
Dependent Claim
111 words
A PROCESS FOR PRODUCING SHAPED BODIES OF REGENERATED CELLULOSE WHICH HAVE BACTERIOSTATIC PROPERTIES WHICH INCLUDES THE STEPS OF EXTRUDING THROUGH A SHAPING ORIFICE AND INTO AN AQUEOUS ACIDIC COAGULATING SOLUTION A VISCOSE SOLUTION CONTAINING FROM ABOUT 4% TO 10%, BY WEIGHT, OF CELLULOSE HAVING INCORPORATED THEREIN NOT LESS THAN 0.25%, BY WEIGHT BASED ON SAID CELLULOSE, OF 3,4,4''-TRICHLOROCARBANILIDE IN PARTICULATE FORM TO IMPART BACTERIOSTATIC PROPERTIES TO A DRY-SHAPED PRODUCT OF REGENERATED CELLULOSE PREPARED FROM SAID SOLUTION, SUBJECTING THE THUS EXTRUDED SOLUTION TO THE ACTION OF THE AQUEOUS ACID SOLUTION UNTIL THE EXTRUDED SOLUTION IS COAGULATED, CONVERTING THE COAGULATED SOLUTION TO REGENERATED CELLULOSE AND SUBSEQUENTLY DRYING THE SHAPED PRODUCTS OF REGENERATED CELLULOSE.
References Cited (Backward Citations)
US3034957A
Cited
US3161622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |