US3075710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for wet grinding solids to extreme fineness
Assignee: Individual
•
Filing: 1960-07-18
•
Granted: 1963-01-29
•
Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Ignatz L Feld
- 👤 Ballard H Clemmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/04; C09C3/041; B; B02; B02C; B02C17/00; B02C17/16; C01; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD FOR GRINDING SOLIDS TO PARTICLE SIZE LESS THAN 37 MICRONS EQUIVALENT SPHERICAL DIAMETER COMPRISING AGITATING BY CONTINUOUSLY MOVING ABOUT AT A HIGH SPEED FOR A PREDETERMINED PERIOD OF TIME A SLURRY COMPRISED OF THE SOLIDS TO BE GROUND, A LIQUID, AND A DEFLOCCULATING REAGENT, THEREAFTER ADDING TO SAID AGITATED SLURRY A GRANULAR MEDIUM HARDER THAN THE SAID SOLIDS TO BE GROUND, AND INCLUDING PARTICLES HAVING SIZES WITHIN THE ENTIRETY OF THE RANGE FROM 705 TO 75 TIMES LARGER IN DIAMETER THAN THE DIAMETER DESIRED FOR THE UPPER LIMITING SIZE OF THE PARTICLES IN THE FINAL GROUND PRODUCT, AND AGITATING THE SLURRY COMPRISING THE GRANDULAR MEDIUM FOR A SECOND AND SUBSTANTIALLY LONGER PREDETERMINED TIME.
Claim 2
Independent Claim
115 words
A METHOD FOR GRINDING SOLIDS TO PARTICLE SIZE LESS THAN 37 MICRONS EQUIVALENT SPHERICAL DIAMETER COMPRISING AGITATING BY CONTINUOUSLY MOVING ABOUT AT A HIGH SPEED FOR A PREDETERMINED PERIOD OF TIME A SLURRY COMPRISED OF THE SOLIDS TO BE GROUND, A LIQUID, AND A DEFLOCCULATING REAGENT, THEREAFTER ADDING TO SAID AGITATED SLURRY A GRANULAR MEDIUM HARDER THAN THE SAID SOLIDS TO BE GROUND, AND INCLUDING PARTICLES HAVING SIZES WITHIN THE ENTIRETY OF THE RANGE FROM 705 TO 75 TIMES LARGER IN DIAMETER THAN THE DIAMETER DESIRED FOR THE UPPER LIMITING SIZE OF THE PARTICLES IN THE FINAL GROUND PRODUCT, AND AGITATING THE SLURRY COMPRISING THE GRANDULAR MEDIUM FOR A SECOND AND SUBSTANTIALLY LONGER PREDETERMINED TIME.
References Cited (Backward Citations)
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US2520320A
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US2581414A
Cited
US2789772A
Cited
US2855156A
Cited
US2956753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |