US2543723A
Expired / Lapsed
US
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Stabilizers for ddt solutions
Assignee: Phillips Petroleum Co
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Filing: 1947-03-07
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Granted: 1951-02-27
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Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Charles W Moberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:07
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; A01N25/02; A01N25/04; A01N43/00; A01N43/90; A01N53/00; A01N2300/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A NONAQUEOUS SOLUTION COMPRISING A PETROLEUM SOLVENT, AN AMOUNT OF DDT SUCH THAT AT -10* F. SAID SOLUTION IS SUPERSATURATED WITH RESPECT TO DDT, AND A STABILIZING MATERIAL IN AN AMOUNT NOT GREATER THAN 1 PER CENT BY WEIGHT AND SUFFICIENT TO INHIBIT CRYSTALLIZATION OF DDT FROM SAID SOLUTION AT -10* F., SAID STABILIZING MATERAL BEING AT LEAST ONE SELECTED FROM THE GROUP CONSISTING OF SORBITAN MONOLAURATE, SORBITAN MONOPALMITATE, SORBITAN MONOSTEARATE, AND POLYOXYALKENE DERIVATIVES OF SAID SORBITAN ESTERS.
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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |