US2584057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of stable, solid, watersoluble, surface-active compositions containing urea and a quaternary ammonium compound
Assignee: Mathieson Chemical Corp
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Filing: 1948-03-04
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Granted: 1952-01-29
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Expires: 1968-03-04
Abstract
No abstract record available.
Inventors
- 👤 Edward C Soule
- 👤 William H Sheltmire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:28
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D3/323; C11D1/00; C11D1/38; C11D1/62; C11D11/00; C11D17/00; C11D17/0047; C11D17/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD OF COMPOUNDING STABLE, SOLID, WATER-SOLUBLE, SURFACE-ACTIVE COMPOSITIONS WHICH COMPRISES FUSING TOGETHER THE MATERIALS LISTED BELOW IN PROPORTIONS WITHIN THE INDICATED RANGES BY WEIGHT: A MAJOR PROPORTION OF UREA IN AN AMOUNT NOT EXCEEDING 95% OF THE TOTAL COMPOSITION, 3% TO 45% BASED ON THE WEIGHT OF THE UREA OF A WATER-SOLUBLE, SURFACE-ACTIVE QUATERNARY AMMONIUM SALT IN WHICH ALL FOUR HYDROGENS OF THE AMMONIUM RADICAL ARE SUBSTITUTED BY ORGANIC RADICALS AT LEAST ONE OF WHICH CONTAINS A CHAIN OF 8 TO 16 CARBON ATOMS AND 2%-12% BASED ON THE TOTAL WEIGHT OF THE UREA AND THE QUATERNARY AMMONIUM COMPOUND OF AN ACID SELECTED FROM THE GROUP CONSISTING OF GLACIAL ACETIC ACID, SYRUPY PHOSPHORIC ACID AND CONCENTRATED SULFURIC ACID, AT SUPERATMOSPHERIC TEMPERATURE OF ABOUT 110*-150* C. AND COOLING AND SOLIDIFYING THE RESULTING MELT.
Claim 2
Independent Claim
133 words
A METHOD OF COMPOUNDING STABLE, SOLID, WATER-SOLUBLE, SURFACE-ACTIVE COMPOSITIONS WHICH COMPRISES FUSING TOGETHER THE MATERIALS LISTED BELOW IN PROPORTIONS WITHIN THE INDICATED RANGES BY WEIGHT: A MAJOR PROPORTION OF UREA IN AN AMOUNT NOT EXCEEDING 95% OF THE TOTAL COMPOSITION, 3% TO 45% BASED ON THE WEIGHT OF THE UREA OF A WATER-SOLUBLE, SURFACE-ACTIVE QUATERNARY AMMONIUM SALT IN WHICH ALL FOUR HYDROGENS OF THE AMMONIUM RADICAL ARE SUBSTITUTED BY ORGANIC RADICALS AT LEAST ONE OF WHICH CONTAINS A CHAIN OF 8 TO 16 CARBON ATOMS AND 2%-12% BASED ON THE TOTAL WEIGHT OF THE UREA AND THE QUATERNARY AMMONIUM COMPOUND OF AN ACID SELECTED FROM THE GROUP CONSISTING OF GLACIAL ACETIC ACID, SYRUPY PHOSPHORIC ACID AND CONCENTRATED SULFURIC ACID, AT SUPERATMOSPHERIC TEMPERATURE OF ABOUT 110*-150* C. AND COOLING AND SOLIDIFYING THE RESULTING MELT.
References Cited (Backward Citations)
GB443795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |