US2518191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for granulating ddt
Assignee: EIDP Inc
•
Filing: 1946-02-07
•
Granted: 1950-08-08
•
Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 Norman E Searle
- 👤 Albert L Flenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:53
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B01J2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR GRANULATING DDT WHICH COMPRISES DISPERSING FUSED DDT IN WATER AT A TEMPERATURE ABOVE THE FUSION POINT OF THE DDT WITH THE AID OF AN EMULSIFYING AGENT, COOLING THE DISPERSION THUS FORMED WITH AGITATION TO A TEMPERATURE OF AT MOST ABOUT 55*C., AND REGULATING THE COOLING RATE OF THE DISPERSION SO THAT AT LEAST TEN MINUTES ARE REQUIRED TO COOL THRU THE RANGE OF 85*C. TO 70*C.
Claim 2
Dependent Claim
69 words
A PROCESS FOR GRANULATING DDT WHICH COMPRISES DISPERSING FUSED DDT IN WATER AT A TEMPERATURE ABOVE THE FUSION POINT OF THE DDT WITH THE AID OF AN EMULSIFYING AGENT, COOLING THE DISPERSION THUS FORMED WITH AGITATION TO A TEMPERATURE OF AT MOST ABOUT 55*C., AND REGULATING THE COOLING RATE OF THE DISPERSION SO THAT AT LEAST TEN MINUTES ARE REQUIRED TO COOL THRU THE RANGE OF 85*C. TO 70*C.
References Cited (Backward Citations)
GB196012A
Cited
GB200702A
Cited
US2190922A
Cited
GB547871A
Cited
US2429839A
Cited
US2423457A
Cited
US2420295A
Cited
US2442760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |