Patent US2516477A successfully refreshed from Google Patents.
US2516477A
Expired / Lapsed
US
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Lecithin stabilizer for ddt petroleum solutions
Assignee: Phillips Petroleum Co
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Filing: 1947-03-07
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Granted: 1950-07-25
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Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 Charles W Moberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:48
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; A01N25/02; A01N57/00; A01N57/10; A01N57/12; A01N2300/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A SOLUTION OF DDT IN A PETROLEUM SOLVENT CONTAINING FROM 0.5 TO 2.0 WEIGHT PER CENT OF LECITHIN WHEREIN THE AMOUNT OF DISSOLVED DDT IS SUFFICIENT THAT, ON COOLING, THE SOLUTION WILL BECOME SUPERSATURATED WITH DDT BEFORE REACHING THE TEMPERATURE AT WHICH THE SOLVENT BEGINS TO CRYSTALLIZE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |