US2919198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product and process for the production of aqueous gels
Assignee: Henkel AG and Co KGaA
•
Filing: 1958-02-12
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Granted: 1959-12-29
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Kohler Rudolf
- 👤 Dierichs Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:55
CPC Classifications
A; A23; A23L; A23L29/00; A23L29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AS A COMPOSTION OF MATTER, A DRY MIXTURE CAPABLE OF FORMING AN AQUEOUS GEL WHEN ADMIXED WITH WATER, SAID GEL BEING THERMO-REVERSIBLE, COMPRISING AS GEL-FORMING INGREDIENTS A WATER-SOLUBLE POLYURONIC ACID AMIDE WHEREIN ABOUT 50% TO ABOUT 80% OF THE ACYL GROUPS ARE PRESENT AS CARBONAMIDE GROUPS AND THE REMAINDER OF THE ACYL GROUPS ARE PRESENT ESSENTIALLY AS NEUTRALIZED CARBOXY GROUPS ADMIXED WITH A SUFFICIENT AMOUNT OF A WATERSOLUBLE, NON-ACIDIC-REACTING ORGANIC COMPOUND WHICH FORMS FREE ACIDS GRADUALLY IN THE PRESENCE OF WATER TO IMPART A PH WITHIN THE RANGE OF 2 TO 6 TO THE GEL SOFORMED.
Claim 2
Dependent Claim
96 words
AS A COMPOSTION OF MATTER, A DRY MIXTURE CAPABLE OF FORMING AN AQUEOUS GEL WHEN ADMIXED WITH WATER, SAID GEL BEING THERMO-REVERSIBLE, COMPRISING AS GEL-FORMING INGREDIENTS A WATER-SOLUBLE POLYURONIC ACID AMIDE WHEREIN ABOUT 50% TO ABOUT 80% OF THE ACYL GROUPS ARE PRESENT AS CARBONAMIDE GROUPS AND THE REMAINDER OF THE ACYL GROUPS ARE PRESENT ESSENTIALLY AS NEUTRALIZED CARBOXY GROUPS ADMIXED WITH A SUFFICIENT AMOUNT OF A WATERSOLUBLE, NON-ACIDIC-REACTING ORGANIC COMPOUND WHICH FORMS FREE ACIDS GRADUALLY IN THE PRESENCE OF WATER TO IMPART A PH WITHIN THE RANGE OF 2 TO 6 TO THE GEL SOFORMED.
References Cited (Backward Citations)
US2380739A
Cited
US2494912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |