US2583268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing cold-swelling starch products
Assignee: Scholtens Chemische Fabrieken NV
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Filing: 1948-03-19
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Granted: 1952-01-22
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Expires: 1968-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lolkema Jan
- 👤 Meer Willem Albertus Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:07
CPC Classifications
C; C08; C08L; C08L3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS OF MANUFACTURING STARCH PREPARATIONS SOLUBLE IN COLD WATER TO SOLUTIONS WHICH AFTER THE ADDITION OF A CATALYST FOR THE CONDENSATION WHEN DRIED ON THE SURFACE OF A MATERIAL WILL PRODUCE INSOLUBLE FILMS WHICH COMPRISES HEATING A MIXTURE HAVING A PH OF AT LEAST 5 OF A STARCH MATERIAL CONTAINING FREE HYDROXYL GROUPS, WATER, A MATERIAL CONTAINING FREE HYDROXYL GROUPS, WATER, TURE OF A PHENOL AND FORMALDEHYDE, A MIXTURE OF A PHENOL, MELAMINE AND FORMALDEHYDE, A PRECONDENSATE OF A PHENOL AND FORMALDHYDE, A PRECONCONDENSATE OF A PHENOL, MELAMINE AND FORMALDEHYDE ON A ROTARY DRUM TO A TEMPERATURE ADAPTED TO REMOVE THE WATER AND TO GELATINIZE THE STARCH MATERIAL, WHILE PRESSING OUT THE SAID MIXTURE UNDER MECHANICAL PRESSURE TO A THIN LAYER WHICH IS SIMULTANEOUSLY DRIED AND COMMINUTING THE DRY FILM.
Claim 2
Dependent Claim
131 words
A PROCESS OF MANUFACTURING STARCH PREPARATIONS SOLUBLE IN COLD WATER TO SOLUTIONS WHICH AFTER THE ADDITION OF A CATALYST FOR THE CONDENSATION WHEN DRIED ON THE SURFACE OF A MATERIAL WILL PRODUCE INSOLUBLE FILMS WHICH COMPRISES HEATING A MIXTURE HAVING A PH OF AT LEAST 5 OF A STARCH MATERIAL CONTAINING FREE HYDROXYL GROUPS, WATER, A MATERIAL CONTAINING FREE HYDROXYL GROUPS, WATER, TURE OF A PHENOL AND FORMALDEHYDE, A MIXTURE OF A PHENOL, MELAMINE AND FORMALDEHYDE, A PRECONDENSATE OF A PHENOL AND FORMALDHYDE, A PRECONCONDENSATE OF A PHENOL, MELAMINE AND FORMALDEHYDE ON A ROTARY DRUM TO A TEMPERATURE ADAPTED TO REMOVE THE WATER AND TO GELATINIZE THE STARCH MATERIAL, WHILE PRESSING OUT THE SAID MIXTURE UNDER MECHANICAL PRESSURE TO A THIN LAYER WHICH IS SIMULTANEOUSLY DRIED AND COMMINUTING THE DRY FILM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |