US3223333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing liquid slurries and for dispersement thereof in polymeric substances
Assignee: Fluid Energy Processing and Equipment Co
•
Filing: 1963-09-24
•
Granted: 1965-12-14
•
Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Nicholas N Stephanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:46
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/061; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF PREPARING A LIQUID SUSPENSION OF FINELY SUBDIVIDED SOLID PARTICLES WHICH COMPRISES PASSING PARTICLES OF SOLID MATERIAL INTO A FIRST AREA COMPRISING A VORTEX OF GASEOUS FLUID AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE TEMPERATURE OF CONDENSATION OF SAID FLUID WHEREBY THE PARTICLES OF SAID SOLID MATERIAL IMPACT EACH OTHER AT VELOCITIES SUFFICIENT TO CAUSE PULVERIZATION THEREOF INTO FINES AND LARGER PARTICLES, PASSING THE RESULTING FINES AND ENTRAINING FLUID, WHILE IN A RADIALLY INWARDLY TENDING SPIRAL CIRCULATION MAINTAINING SAID VORTEX, THROUGH A PRECOOLING AREA WHILE MAINTAINING THE LARGER PARTICLES OF PULVERIZATION IN THE FIRST AREA SUBJECT TO FURTHER PULVERIZATION, SAID FINES AND ENTRAINING FLUID BEING PRE-COOLED TO A TEMPERATURE JUST ABOVE THE TEMPERATURE OF CONDENSATION OF SAID FLUID, THEN PASSING SAID FINES AND ENTRAINING FLUID, WHILE IN SAID INWARDLY TENDING SPIRAL CIRCULATION, INTO A CONDENSATION AREA AND CONTACTING THEM WITH A LIQUID AT A TEMPERATURE SUFFICIENT TO CONDENSE SAID ENTRAINING FLUID.
Claim 2
Independent Claim
153 words
A METHOD OF PREPARING A LIQUID SUSPENSION OF FINELY SUBDIVIDED SOLID PARTICLES WHICH COMPRISES PASSING PARTICLES OF SOLID MATERIAL INTO A FIRST AREA COMPRISING A VORTEX OF GASEOUS FLUID AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE TEMPERATURE OF CONDENSATION OF SAID FLUID WHEREBY THE PARTICLES OF SAID SOLID MATERIAL IMPACT EACH OTHER AT VELOCITIES SUFFICIENT TO CAUSE PULVERIZATION THEREOF INTO FINES AND LARGER PARTICLES, PASSING THE RESULTING FINES AND ENTRAINING FLUID, WHILE IN A RADIALLY INWARDLY TENDING SPIRAL CIRCULATION MAINTAINING SAID VORTEX, THROUGH A PRECOOLING AREA WHILE MAINTAINING THE LARGER PARTICLES OF PULVERIZATION IN THE FIRST AREA SUBJECT TO FURTHER PULVERIZATION, SAID FINES AND ENTRAINING FLUID BEING PRE-COOLED TO A TEMPERATURE JUST ABOVE THE TEMPERATURE OF CONDENSATION OF SAID FLUID, THEN PASSING SAID FINES AND ENTRAINING FLUID, WHILE IN SAID INWARDLY TENDING SPIRAL CIRCULATION, INTO A CONDENSATION AREA AND CONTACTING THEM WITH A LIQUID AT A TEMPERATURE SUFFICIENT TO CONDENSE SAID ENTRAINING FLUID.
References Cited (Backward Citations)
US2032827A
Cited
US2460546A
Cited
US2636688A
Cited
US2999649A
Cited
US2983453A
Cited
US3005594A
Cited
US3058673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |