US2684949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing dispersions of immiscible liquids or solids in a liquid medium
Assignee: Shell Development Co
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Filing: 1952-04-12
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Granted: 1954-07-27
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Expires: 1972-04-12
Abstract
No abstract record available.
Inventors
- 👤 Frank M Mcmillan
- 👤 Robert D Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; C; C09; C09K; C09K23/00; Y; Y10; Y10S; Y10S516/00; Y10S516/924; Y10S516/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF PRODUCING A DISPERSION OF A FINELY DIVIDED MATERIAL IN A LIQUID MEDIUM IN WHICH IT IS INCOMPLETELY MISCIBLE, WHICH COMPRISES INJECTING A STREAM OF VAPORS OF SAID LIQUID INTO A MIXTURE OF THE MATERIAL TO BE DISPERSED TOGETHER WITH AN ACID CAPABLE OF FORMING A SURFACEACTIVE SALT SOLUBLE IN SAID LIQUID MEDIUM TO FORM AN ATOMIZED STREAM OF SAID MATERIAL CONTAINING SAID ACID TOGETHER WITH VAPORS OF SAID LIQUID, INTRODUCING THIS ATOMIZED STREAM DIRECTLY INTO AN OPPOSING STREAM OF A SOLUTION IN SAID LIQUID OF THE BASE CORRESPONDING TO SAID SALT, WHEREBY SAID ACID AND BASE REACT TO FORM SAID SALT IN THE PRESENCE OF THE MATERIAL TO BE DISPERSED IN FINELY DIVIDED FORM AS A RESULT OF THE COMBINED EFFECT OF THE SHEARING ACTION OF SAID INJECTED VAPORS, THE IMPACT OF SAID OPPOSING STREAMS AND THE CONDENSATION OF SAID VAPORS ON CONTACT WITH SAID SOLUTION OF THE BASE, AND WITHDRAWING FROM THE REACTION ZONE A STABLE DISPERSION OF SAID MATERIAL IN SAID LIQUID AT A RATE CORRESPONDING TO THE RATE OF FORMATION OF SAID SURFACE-ACTIVE SALT.
Claim 2
Independent Claim
180 words
A METHOD OF PRODUCING A DISPERSION OF A FINELY DIVIDED MATERIAL IN A LIQUID MEDIUM IN WHICH IT IS INCOMPLETELY MISCIBLE, WHICH COMPRISES INJECTING A STREAM OF VAPORS OF SAID LIQUID INTO A MIXTURE OF THE MATERIAL TO BE DISPERSED TOGETHER WITH AN ACID CAPABLE OF FORMING A SURFACEACTIVE SALT SOLUBLE IN SAID LIQUID MEDIUM TO FORM AN ATOMIZED STREAM OF SAID MATERIAL CONTAINING SAID ACID TOGETHER WITH VAPORS OF SAID LIQUID, INTRODUCING THIS ATOMIZED STREAM DIRECTLY INTO AN OPPOSING STREAM OF A SOLUTION IN SAID LIQUID OF THE BASE CORRESPONDING TO SAID SALT, WHEREBY SAID ACID AND BASE REACT TO FORM SAID SALT IN THE PRESENCE OF THE MATERIAL TO BE DISPERSED IN FINELY DIVIDED FORM AS A RESULT OF THE COMBINED EFFECT OF THE SHEARING ACTION OF SAID INJECTED VAPORS, THE IMPACT OF SAID OPPOSING STREAMS AND THE CONDENSATION OF SAID VAPORS ON CONTACT WITH SAID SOLUTION OF THE BASE, AND WITHDRAWING FROM THE REACTION ZONE A STABLE DISPERSION OF SAID MATERIAL IN SAID LIQUID AT A RATE CORRESPONDING TO THE RATE OF FORMATION OF SAID SURFACE-ACTIVE SALT.
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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |