Patent US4529510A successfully refreshed from Google Patents.
Patent US3085894A successfully refreshed from Google Patents.
US3085894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper coating pigments
Assignee: Georgia Kaolin Co
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Filing: 1961-06-28
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Granted: 1963-04-16
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ben W Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:05
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A COATING PIGMENT OF IMPROVED COATED BRIGHTNESS, GLOSS AND OPACITY CONSISTING ESSENTIALLY OF ABOUT 50% TO 90% CLAY PARTICLES WITHIN THE SIZE RANGES ABOUT 90 TO 100% BY WEIGHT OF PARTICLES LESS THAN 5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 98 TO 100% BY WEIGHT OF PARTICLES LESS THAN 4 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 88% TO 100% BY WEIGHT OF PARTICLES LESS THAN 1.7 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 85% TO 97% BY WEIGHT OF PARTICLES LESS THAN 1.5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 70% TO 84% OF PARTICLES LESS THAN 1 MICRON IN AVERAGE SPHERICAL DIAMETER, ABOUT 25% TO 37z% OF PARTICLES BELOW 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER AND ABOUT 10% TO 15% OF PARTICLES BELOW 0.3 MICRON IN AVERAGE SPHERICA DIAMETER, AND ABOUT 10% TO 50% OF CALCIUM CARBONATE BETWEEN 0.1 TO 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER.
Claim 2
Dependent Claim
145 words
A COATING PIGMENT OF IMPROVED COATED BRIGHTNESS, GLOSS AND OPACITY CONSISTING ESSENTIALLY OF ABOUT 50% TO 90% CLAY PARTICLES WITHIN THE SIZE RANGES ABOUT 90 TO 100% BY WEIGHT OF PARTICLES LESS THAN 5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 98 TO 100% BY WEIGHT OF PARTICLES LESS THAN 4 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 88% TO 100% BY WEIGHT OF PARTICLES LESS THAN 1.7 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 85% TO 97% BY WEIGHT OF PARTICLES LESS THAN 1.5 MICRONS IN AVERAGE SPHERICAL DIAMETER, ABOUT 70% TO 84% OF PARTICLES LESS THAN 1 MICRON IN AVERAGE SPHERICAL DIAMETER, ABOUT 25% TO 37z% OF PARTICLES BELOW 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER AND ABOUT 10% TO 15% OF PARTICLES BELOW 0.3 MICRON IN AVERAGE SPHERICA DIAMETER, AND ABOUT 10% TO 50% OF CALCIUM CARBONATE BETWEEN 0.1 TO 0.5 MICRON IN AVERAGE SPHERICAL DIAMETER.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |