US3058671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractured clay
Assignee: Thiele Kaolin Co
•
Filing: 1959-05-18
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Granted: 1962-10-16
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Expires: 1979-05-18
Abstract
No abstract record available.
Inventors
- 👤 Robert F Billue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:16
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/025; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF TREATING COARSE KAOLILNITIC CLAY COMPRISING: FRACTURING BY MILLING COARSE KAOLINITIC CLAY HAVING NOT MORE THAN 35% BY WEIGHT PARTICLES BELOW 2 MICRONS, WHICH INCLUDES BREAKING DISCRETE VERMICULES THEREOF, TO OBTAIN CLAY PARTICLES HAVING AT LEAST ABOUT A 15% BY WEIGHT INCREASE OF CLAY PARTICLES FINER THAN 2 MICRONS, CLASSIFYING SAID FRACTURED CLAY TO RECOVER A FRACTION HAVING AN INCREASED PROPORTION OF CLAY PARTICLES FINER THAN 2 MICRONS, SAID FRACTION HAVING AT LEAST ABOUT 40% BY WEIGHT PARTICLES FINER THAN 2 MICRONS AND HAVING FRACTURE-INDUCED BRIGHTNESS THAT IS REMARKEDLY GREATER ON THE BRIGHTNESS SCALE THAN THE BRIGHTNESS OF UNFRACTURED KAOLINITIC CLAY OF SUBSTANTIALLY THE SAME PARTICLE SIZE AND FROM THE SAME SOURCE.
Claim 2
Independent Claim
114 words
THE METHOD OF TREATING COARSE KAOLILNITIC CLAY COMPRISING: FRACTURING BY MILLING COARSE KAOLINITIC CLAY HAVING NOT MORE THAN 35% BY WEIGHT PARTICLES BELOW 2 MICRONS, WHICH INCLUDES BREAKING DISCRETE VERMICULES THEREOF, TO OBTAIN CLAY PARTICLES HAVING AT LEAST ABOUT A 15% BY WEIGHT INCREASE OF CLAY PARTICLES FINER THAN 2 MICRONS, CLASSIFYING SAID FRACTURED CLAY TO RECOVER A FRACTION HAVING AN INCREASED PROPORTION OF CLAY PARTICLES FINER THAN 2 MICRONS, SAID FRACTION HAVING AT LEAST ABOUT 40% BY WEIGHT PARTICLES FINER THAN 2 MICRONS AND HAVING FRACTURE-INDUCED BRIGHTNESS THAT IS REMARKEDLY GREATER ON THE BRIGHTNESS SCALE THAN THE BRIGHTNESS OF UNFRACTURED KAOLINITIC CLAY OF SUBSTANTIALLY THE SAME PARTICLE SIZE AND FROM THE SAME SOURCE.
References Cited (Backward Citations)
US1999773A
Cited
US2158987A
Cited
US2305404A
Cited
US2710244A
Cited
GB736094A
Cited
US2920832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |