US2853484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing cold swelling starch ethers and/or esters
Assignee: Scholtens Chemische Fabrieken NV
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Filing: 1955-11-14
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Granted: 1958-09-23
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jan Dr Lolkema
- 👤 Moes Geert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:15
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/02; A; A23; A23L; A23L29/00; A23L29/20; A23L29/206; A23L29/212; A23L29/219; C08B30/00; C08B30/12; C08B30/14; C08B31/003; C08B31/006; C08B31/08; C08B31/18; C08B31/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR THE MANUFACTURE OF DRY COLD WATER SOLUBLE GELATINIZED STARCH PRODUCTS WHICH COMPRISES TREATING A GRANULAR STARCH MATERIAL WITH A POLYFUNCTIONAL AGENT REACTING WITH AT LEAST TWO HYDROXYL GROUPS OF THE STARCH MOLECULES, WHILE MAINTAINING SAID STARCH MATERIAL IN UNGELATINIZED CONDITION, GELATINIZING THE STARCH MATERIAL SO TREATED AND REACTING THE SAME WITH A REAGENT SELECTED FROM THE CLASS CONSISTING OF MONOFUNCTIONAL ETHERIFYING AGENTS AND MONOFUNCTIONAL ESTERIFYING AGENTS, HEATING AND SIMULTANEOUSLY DRYING THE REACTION MASS IN A THIN LAYER AT A TEMPERATURE OF BETWEEN ABOUT 70*C. AND 180*C., THEREBY PRODUCING A STARCH PRODUCT IN WHICH SUBSTANTIALLY ALL OF THE STARCH GRANULES ARE AT LEAST PARTIALLY REPTURED, AND COMMINUTING THE FILM THUS OBTAINED TO SMALL FLAKES.
Claim 2
Dependent Claim
116 words
A PROCESS FOR THE MANUFACTURE OF DRY COLD WATER SOLUBLE GELATINIZED STARCH PRODUCTS WHICH COMPRISES TREATING A GRANULAR STARCH MATERIAL WITH A POLYFUNCTIONAL AGENT REACTING WITH AT LEAST TWO HYDROXYL GROUPS OF THE STARCH MOLECULES, WHILE MAINTAINING SAID STARCH MATERIAL IN UNGELATINIZED CONDITION, GELATINIZING THE STARCH MATERIAL SO TREATED AND REACTING THE SAME WITH A REAGENT SELECTED FROM THE CLASS CONSISTING OF MONOFUNCTIONAL ETHERIFYING AGENTS AND MONOFUNCTIONAL ESTERIFYING AGENTS, HEATING AND SIMULTANEOUSLY DRYING THE REACTION MASS IN A THIN LAYER AT A TEMPERATURE OF BETWEEN ABOUT 70*C. AND 180*C., THEREBY PRODUCING A STARCH PRODUCT IN WHICH SUBSTANTIALLY ALL OF THE STARCH GRANULES ARE AT LEAST PARTIALLY REPTURED, AND COMMINUTING THE FILM THUS OBTAINED TO SMALL FLAKES.
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) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |