Patent US2421312A successfully refreshed from Google Patents.
US2584056A
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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
2026-10-23 17:22
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0047; C11D17/0052; C11D1/00; C11D1/38; C11D1/62; C11D11/00; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D3/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF COMPOUNDING STABLE, SOLID, WATER-SOLUBLE, SURFACE-ACTIVE COMPOSITIONS WHICH COMPRISES FUSING TOGETHER UREA IN MAJOR PROPORTION BUT NOT MORE THAN 80% BY WEIGHT ON THE TOTAL COMPOSITION OF UREA, AND 12%-22% BY WEIGHT ON THE UREA OF A WATER-SOLUBLE, SURFACEACTIVE 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 4%-6.5% BY WEIGHT ON THE TOTAL OF UREA AND QUATERNARY AMMONIUM COMPOUND OF SODIUM ACETATE AT A TEMPERATURE ABOVE NORMAL ATMOSPHERIC TEMPERATURE AND NOT EXCEEDING 110* C. AND COOLING AND SOLIFYING THE FUSION.
Claim 2
Independent Claim
106 words
A METHOD OF COMPOUNDING STABLE, SOLID, WATER-SOLUBLE, SURFACE-ACTIVE COMPOSITIONS WHICH COMPRISES FUSING TOGETHER UREA IN MAJOR PROPORTION BUT NOT MORE THAN 80% BY WEIGHT ON THE TOTAL COMPOSITION OF UREA, AND 12%-22% BY WEIGHT ON THE UREA OF A WATER-SOLUBLE, SURFACEACTIVE 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 4%-6.5% BY WEIGHT ON THE TOTAL OF UREA AND QUATERNARY AMMONIUM COMPOUND OF SODIUM ACETATE AT A TEMPERATURE ABOVE NORMAL ATMOSPHERIC TEMPERATURE AND NOT EXCEEDING 110* C. AND COOLING AND SOLIFYING THE FUSION.
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 |