US3715277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fibers containing fibers
Assignee: Anic SpA
•
Filing: 1969-06-26
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Granted: 1973-02-06
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Expires: 1989-06-26
Abstract
Abstract FILAMENTS OF POLYMERIC MATERIAL ARE DISCLOSED WHICH CONTAIN DESCRETE CELLS WHEREIN DROPLETS OF ENZYMATIC MAATERRIAL ARE CONTAINED SO THAT THE ENZYMATIC MATERIAL IS PROTECTED AGAINST LOSS OF ENZYMATIC ACTIVITY AND IS PREVENTED FROM ESCAPING FROM THE FILAMENTS BUT IS PREMITTED TO EXERT A HIGH DEGREE OF ENZYMATIC ACTIVITY IN THE PRESENCE OF A SUBSTRATE. A PROCESS FOR PRODUCING SUCH FILAMENTS IS ALSO DESCRIBED WHICH COMPRISES MIXING AN ENZYMATIC PREPARATION WITH A LIQUID PHASE COMPRISING A SOLUTION OF A SYNTHETIC POLYMER, EXTRUDING THE LIQUID PHASE THROUGH THE ORIFICES OF A SPINNERET AND THEN SOLIDIFYING THE POLYMER BY REMOVING THE SOLVENT THEREFROM.
Inventors
- 👤 F Cognigni
- 👤 D Dinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:17
CPC Classifications
C; C12; C12N; C12N11/00; C12N11/02; C12N11/04; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |