US2614061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing ddt dispersions using carboxy methyl cellulose
Assignee: Sherwin Williams Co
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Filing: 1948-05-03
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Granted: 1952-10-14
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Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Conrad V Coash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/02; A01N25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS OF MANUFACTURE OF A FLUID WATER REDUCIBLE CONCENTRATED PEST CONTROL COMPOSITION WHICH COMPRISES INTERMIXING AT LEAST 35% BY WEIGHT OF 1,1-BIS(P-CHLOROPHENYL)2,2,2 TRICHLOROETHANE, MORE THAN 0.25% AND LESS THAN 2% BY WEIGHT OF A HIGH VISCOSITY TYPE WATER SOLUBLE ALKALI METAL SALT OF CARBOXY METHYL CELLULOSE IN NOT LESS THAN 45% OF WATER AND PASSING THE AQUEOUS SLURRY THUS FORMED THROUGH A CLEARANCE EXISTING BETWEEN TWO SURFACES OF AN ATTRITION MILL, ONE SURFACE OF WHICH IS ROTATED AT HIGH VELOCITIES AS COMPARED WITH THE OTHER, THEREBY INDUCING A HIGH SHEARING STRESS WITHIN THE SAID AQUEOUS SLURRY.
Claim 2
Dependent Claim
97 words
A PROCESS OF MANUFACTURE OF A FLUID WATER REDUCIBLE CONCENTRATED PEST CONTROL COMPOSITION WHICH COMPRISES INTERMIXING AT LEAST 35% BY WEIGHT OF 1,1-BIS(P-CHLOROPHENYL)2,2,2 TRICHLOROETHANE, MORE THAN 0.25% AND LESS THAN 2% BY WEIGHT OF A HIGH VISCOSITY TYPE WATER SOLUBLE ALKALI METAL SALT OF CARBOXY METHYL CELLULOSE IN NOT LESS THAN 45% OF WATER AND PASSING THE AQUEOUS SLURRY THUS FORMED THROUGH A CLEARANCE EXISTING BETWEEN TWO SURFACES OF AN ATTRITION MILL, ONE SURFACE OF WHICH IS ROTATED AT HIGH VELOCITIES AS COMPARED WITH THE OTHER, THEREBY INDUCING A HIGH SHEARING STRESS WITHIN THE SAID AQUEOUS SLURRY.
References Cited (Backward Citations)
US2416460A
Cited
US1616323A
Cited
US2236545A
Cited
US2329074A
Cited
US2449028A
Cited
US2556888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |