Patent US3343973A successfully refreshed from Google Patents.
US3343973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractured clay
Assignee: Thiele Kaolin Co
•
Filing: 1966-06-30
•
Granted: 1967-09-26
•
Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Robert F Billue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:33
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/025; C04B33/04; C04B33/13; C04B33/14; C04B35/00; C04B35/622; C04B35/626; C04B35/62605; C04B35/6261; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/5463; C04B2235/5472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
KAOLINITIC CLAY OF FRACTURE-INDUCED BRIGHTNESS CONSISTING ESSENTIALLY OF CLASSIFIED MILL-FRACTURED REMNANTS OF NATURALLY OCCURRING LARGER CLAY PARTICLES FROM KAOLINITIC CLAY HAVING NOT MORE THAN 35% BY WEIGHT PARTICLES BELOW 2 MICRONS (EQUIVALENT SPHERICAL DIAMETER), AND HAVING AT LEAST ABOUT 40% BY WEIGHT CLAY PARTICLES FINER THAN 2 MICRONS (EQUIVALENT SPHERICAL DIAMETER), HIGHER GLOSS AND AT LEAST ABOUT 0.5 INCREASED BRIGHTNESS ON THE BRIGHTNESS SCALE, AND WHITER COLOR, AS COMPARED TO UNFRACTURED PARTICLES OF KAOLINITIC CLAY OF SUBSTANTIALLY THE SAME PARTICLE SIZE AND FROM THE SAME SOURCE.
Claim 2
Dependent Claim
86 words
KAOLINITIC CLAY OF FRACTURE-INDUCED BRIGHTNESS CONSISTING ESSENTIALLY OF CLASSIFIED MILL-FRACTURED REMNANTS OF NATURALLY OCCURRING LARGER CLAY PARTICLES FROM KAOLINITIC CLAY HAVING NOT MORE THAN 35% BY WEIGHT PARTICLES BELOW 2 MICRONS (EQUIVALENT SPHERICAL DIAMETER), AND HAVING AT LEAST ABOUT 40% BY WEIGHT CLAY PARTICLES FINER THAN 2 MICRONS (EQUIVALENT SPHERICAL DIAMETER), HIGHER GLOSS AND AT LEAST ABOUT 0.5 INCREASED BRIGHTNESS ON THE BRIGHTNESS SCALE, AND WHITER COLOR, AS COMPARED TO UNFRACTURED PARTICLES OF KAOLINITIC CLAY OF SUBSTANTIALLY THE SAME PARTICLE SIZE AND FROM THE SAME SOURCE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |