Patent US2992936A successfully refreshed from Google Patents.
US2992936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay products and methods of producing them
Assignee: Georgia Kaolin Co
•
Filing: 1958-11-21
•
Granted: 1961-07-18
•
Expires: 1978-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ben W Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:37
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/025; C04B33/13; C04B33/14; C04B35/00; C04B35/622; C04B35/626; C04B35/62605; C04B35/62625; C04B35/6263; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; C04B41/5037; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/44; C04B2235/447; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5445; C04B2235/5463; C04B2235/5481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A COATING CLAY OF IMPROVED COATED BRIGHTNESS, GLOSS, AND OPACITY CONSISTING ESSENTIALLY OF CLAY PARTICLES WITHIN THE SIZE RANGES ABOUT 88% TO 100% BY WEIGHT OF PARTICLES LESS THAN 1.7 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 85% TO 90% BY WEIGHT OF PARTICLES LESS THAN 1.5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 70% TO 84% OF APRTICLES LESS THAN 1 MICRON IN AVERAGE SPHERICAL DIAMETER ABOUT 25% TO 37% OF PARTICLES BELOW 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER AND ABOUT 10% TO 15% OF PARTICLES BELOW 0.3 MICRON IN AVERAGE SPHERICAL DIAMETER AND WHEREIN THE PORTION PRESENT ABOVE 1.7 MICRONS COMPRISES ABOUT 99% TO 100% BY WEIGHT BELOW 5 MICRONS EQUIVALENT SPHERICAL DIAMETER AND 98 TO 100% BY WEIGHT LESS THAN 4 MICRONS EQUIVALENT SPHERICAL DIAMETER.
Claim 2
Dependent Claim
126 words
A COATING CLAY OF IMPROVED COATED BRIGHTNESS, GLOSS, AND OPACITY CONSISTING ESSENTIALLY OF CLAY PARTICLES WITHIN THE SIZE RANGES ABOUT 88% TO 100% BY WEIGHT OF PARTICLES LESS THAN 1.7 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 85% TO 90% BY WEIGHT OF PARTICLES LESS THAN 1.5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 70% TO 84% OF APRTICLES LESS THAN 1 MICRON IN AVERAGE SPHERICAL DIAMETER ABOUT 25% TO 37% OF PARTICLES BELOW 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER AND ABOUT 10% TO 15% OF PARTICLES BELOW 0.3 MICRON IN AVERAGE SPHERICAL DIAMETER AND WHEREIN THE PORTION PRESENT ABOVE 1.7 MICRONS COMPRISES ABOUT 99% TO 100% BY WEIGHT BELOW 5 MICRONS EQUIVALENT SPHERICAL DIAMETER AND 98 TO 100% BY WEIGHT LESS THAN 4 MICRONS EQUIVALENT SPHERICAL DIAMETER.
References Cited (Backward Citations)
US2158987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |