US2887431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a slurry of different filler particles uniformly coated with a binder
Assignee: Armstrong World Industries Inc
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Filing: 1957-01-11
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Granted: 1959-05-19
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Expires: 1977-01-11
Abstract
No abstract record available.
Inventors
- 👤 Jay L Piersol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:27
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69; D21H11/00; D21H11/02; D21H11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A METHOD OF COATING WITH A BINDER FILLER PARTICLES OF AT LEAST TWO DIFFERENT CLASSIFICATIONS, ONE HAVING A LESS AFFINITY FOR A WATER-INSOLUBLE BINDER WHEN PRECIPITATED THEREON FROM AN AQUEOUS SLURRY THAN THE OTHER, THE STEPS COMPRISING: IN THE FIRST STATE SUSPENDING IN AN AQUEOUS MEDIUM FILLER PARTICLES OF THE CLASSIFICATION WHICH HAS THE LESSER AFFINITY FOR THE BINDER, A DISPERSION OF WATER-INSOLUBLE BINDER, AND A PRECIPITATING AGENT FOR THE BINDER, AND AGITATING SAID SLURRY TO DEPOSIT SAID BINDER ONTO SAID FILLER PARTICLES; AND, IN THE SECOND STGE, AFTER DEPOSIT OF SAID WATER-INSOLUBLE BINDER ONTO SAID FILLER PARTICLES SUSPENDING, IN SAID SLURRY OF BINDER-COATED FILLER PARTICLES CLASSIFICATION WHICH HAS THE GREATER AFFINITY FORTHE BINDER, TOGETHER WITH AN ADDITIONAL QUANTITY OF A DISPERSION OF WATER-INSOLUBLE BINDER AND A PRECIPITATING AGENT FOR SAID BINDER, AND AGAIN AGITATING SAID SLURRY TO DEPOSIT SAID ADDITIONAL BINDER ONTO SAID FILLER PARTICLES.
Claim 2
Dependent Claim
147 words
IN A METHOD OF COATING WITH A BINDER FILLER PARTICLES OF AT LEAST TWO DIFFERENT CLASSIFICATIONS, ONE HAVING A LESS AFFINITY FOR A WATER-INSOLUBLE BINDER WHEN PRECIPITATED THEREON FROM AN AQUEOUS SLURRY THAN THE OTHER, THE STEPS COMPRISING: IN THE FIRST STATE SUSPENDING IN AN AQUEOUS MEDIUM FILLER PARTICLES OF THE CLASSIFICATION WHICH HAS THE LESSER AFFINITY FOR THE BINDER, A DISPERSION OF WATER-INSOLUBLE BINDER, AND A PRECIPITATING AGENT FOR THE BINDER, AND AGITATING SAID SLURRY TO DEPOSIT SAID BINDER ONTO SAID FILLER PARTICLES; AND, IN THE SECOND STGE, AFTER DEPOSIT OF SAID WATER-INSOLUBLE BINDER ONTO SAID FILLER PARTICLES SUSPENDING, IN SAID SLURRY OF BINDER-COATED FILLER PARTICLES CLASSIFICATION WHICH HAS THE GREATER AFFINITY FORTHE BINDER, TOGETHER WITH AN ADDITIONAL QUANTITY OF A DISPERSION OF WATER-INSOLUBLE BINDER AND A PRECIPITATING AGENT FOR SAID BINDER, AND AGAIN AGITATING SAID SLURRY TO DEPOSIT SAID ADDITIONAL BINDER ONTO SAID FILLER PARTICLES.
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |