Patent US3902606B1 successfully refreshed from Google Patents.
US2973243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing threads, foils, tubes and the like from amylose and/or starch carbohydrates containing amylose
Assignee: Individual
•
Filing: 1958-08-26
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Granted: 1961-02-28
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Expires: 1978-08-26
Abstract
No abstract record available.
Inventors
- 👤 Kudera Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:43
CPC Classifications
D; D01; D01F; D01F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR THE PRODUCTION OF THREADS, FOILS, TUBES AND THE LIKE FROM AT LEAST ONE OF THE SUBSTANCES SELECTED FROM THE GROUP CONSISTING OF AMYLOSE AND STARCH CARBOHYDRATES CONTAINING AMYLOSE, WHICH COMPRISES DISSOLVING SAID SUBSTANCE IN A MIXTURE OF WATER WITH FORMALDEHYDE, IN QUANTITIES TWICE TO SIX TIMES THE VOLUME OF SAID SUBSTANCE, AT A TEMPERATURE OF APPROXIMATELY 120* C., ALLOWING THE VISCOSITY OF THE SOLUTION TO REACH 50-100 POISES BY STORING THE SAME AT ROOM TEMPERATURE UNTIL SAID VISCOSITY HAS BEEN ATTAINED, AND ADJUSTING THE PH TO 2.5-3.5, SHAPING THE PRODUCT THUS OBTAINED TO THE DESIRED STRUCTURE, INTRODUCING THE SHAPED STRUCTURE INTO A SPINNING BATH, THEREIN COAGULATING AND SOLIDIFYING THE PRODUCT, AND WASHING, PLASTICIZING AND DRYING THE SAME.
Claim 2
Dependent Claim
120 words
A PROCESS FOR THE PRODUCTION OF THREADS, FOILS, TUBES AND THE LIKE FROM AT LEAST ONE OF THE SUBSTANCES SELECTED FROM THE GROUP CONSISTING OF AMYLOSE AND STARCH CARBOHYDRATES CONTAINING AMYLOSE, WHICH COMPRISES DISSOLVING SAID SUBSTANCE IN A MIXTURE OF WATER WITH FORMALDEHYDE, IN QUANTITIES TWICE TO SIX TIMES THE VOLUME OF SAID SUBSTANCE, AT A TEMPERATURE OF APPROXIMATELY 120* C., ALLOWING THE VISCOSITY OF THE SOLUTION TO REACH 50-100 POISES BY STORING THE SAME AT ROOM TEMPERATURE UNTIL SAID VISCOSITY HAS BEEN ATTAINED, AND ADJUSTING THE PH TO 2.5-3.5, SHAPING THE PRODUCT THUS OBTAINED TO THE DESIRED STRUCTURE, INTRODUCING THE SHAPED STRUCTURE INTO A SPINNING BATH, THEREIN COAGULATING AND SOLIDIFYING THE PRODUCT, AND WASHING, PLASTICIZING AND DRYING THE SAME.
References Cited (Backward Citations)
US2417611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |