Patent US2541773A successfully refreshed from Google Patents.
US2541773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming insoluble layers from carbohydrates
Assignee: Scholtens Chemische Fabrieken NV
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Filing: 1946-02-15
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Granted: 1951-02-13
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Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 Lolkema Jan
- 👤 Cornelis M H Kool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
C; C09; C09D; C09D103/00; C09D103/04; C09J; C09J103/00; C09J103/04; C09J103/08; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/11; D21; D21H; D21H19/00; D21H19/10; D21H19/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
A PROCESS OF PRODUCING A FILM INSOLUBLE IN WATER AND ORGANIC SOLVENTS ON THE SURFACE OF A MATEERIAL, COMPRISING APPLYING TO SAID SURFACE A SOLUTION OF A POLYSACCHARIDE CONTAINING AT LEAST ONE FREE HYDROXYL GROUP AND CAPABLE OF BEING DISSOLVED IN WATER TO A COLLOIDAL SOLUTION, TO WHICH SOLUTION HAVE BEEN ADDED AN AGENT OF THE GROUP CONSISTING OF ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE HALOGEN ATOMS, ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE EPOXY GROUPS, ETHERIFYING AGENTS CONTAINING AT LEAST ONE REACTIVE HALOGEN ATOM AND ONE REACTIVE EPOXY GROUP, ESTERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE ACID GROUPS, THE ANHYDRIDES DERIVED THEREFROM AND THE ACID HALIDES DERIVED THEREFROM, AND THE PROPORTION OF ALKALINE SUBSTANCE NECESSARY FOR EFFECTING THE REACTION OF SAID AGENT WITH SAID POLYSACCHARIDE AND DRYING THE MATERIAL TOGETHER WITH THE SOLUTION.
Claim 2
Dependent Claim
135 words
A PROCESS OF PRODUCING A FILM INSOLUBLE IN WATER AND ORGANIC SOLVENTS ON THE SURFACE OF A MATEERIAL, COMPRISING APPLYING TO SAID SURFACE A SOLUTION OF A POLYSACCHARIDE CONTAINING AT LEAST ONE FREE HYDROXYL GROUP AND CAPABLE OF BEING DISSOLVED IN WATER TO A COLLOIDAL SOLUTION, TO WHICH SOLUTION HAVE BEEN ADDED AN AGENT OF THE GROUP CONSISTING OF ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE HALOGEN ATOMS, ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE EPOXY GROUPS, ETHERIFYING AGENTS CONTAINING AT LEAST ONE REACTIVE HALOGEN ATOM AND ONE REACTIVE EPOXY GROUP, ESTERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE ACID GROUPS, THE ANHYDRIDES DERIVED THEREFROM AND THE ACID HALIDES DERIVED THEREFROM, AND THE PROPORTION OF ALKALINE SUBSTANCE NECESSARY FOR EFFECTING THE REACTION OF SAID AGENT WITH SAID POLYSACCHARIDE AND DRYING THE MATERIAL TOGETHER WITH THE SOLUTION.
Claim 3
Dependent Claim
122 words
A DRY PRODUCT CONSISTING OF A MIXTURE OF A POLYSACCHARIDE CONTAINING AT LEAST ONE FREE HYDROXYL GROUP AND CAPABLE OF BEING DISSOLVED IN WATER TO A COLLOIDAL SOLUTION AND AN AGENT OF THE GROUP CONSISTING OF ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE HALOGEN ATOMS, ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE EPOXY GROUPS, ETHERIFYING AGENTS CONTAINING AT LEAST ONE REACTIVE HALOGEN ATOM AND ONE REACTIVE EPOXY GROUP, ESTERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE ACID GROUPS, THE ANHYDRIDES DERIVED THEREFROM AND THE ACID HALIDES DERIVED THEREFROM, THE PROPORTION OF SAID AGENT BEING SUCH, THAT A SOLUTION OF SAID DRY PRODUCT WHEN ADMIXED WITH AN ALKALINE SUBSTANCE WILL PRODUCT A FILM INSULUBLE IN WATER AND ORGANIC SOLVENTS WHEN DRIED ON SAID MATERIAL.
Claim 4
Dependent Claim
122 words
A DRY PRODUCT CONSISTING OF A MIXTURE OF A POLYSACCHARIDE CONTAINING AT LEAST ONE FREE HYDROXYL GROUP AND CAPABLE OF BEING DISSOLVED IN WATER TO A COLLOIDAL SOLUTION AND AN AGENT OF THE GROUP CONSISTING OF ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE HALOGEN ATOMS, ETHERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE EPOXY GROUPS, ETHERIFYING AGENTS CONTAINING AT LEAST ONE REACTIVE HALOGEN ATOM AND ONE REACTIVE EPOXY GROUP, ESTERIFYING AGENTS CONTAINING AT LEAST TWO REACTIVE ACID GROUPS, THE ANHYDRIDES DERIVED THEREFROM AND THE ACID HALIDES DERIVED THEREFROM, THE PROPORTION OF SAID AGENT BEING SUCH, THAT A SOLUTION OF SAID DRY PRODUCT WHEN ADMIXED WITH AN ALKALINE SUBSTANCE WILL PRODUCT A FILM INSULUBLE IN WATER AND ORGANIC SOLVENTS WHEN DRIED ON SAID MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |